1. Introduction
Highly-profoundly gifted children are at high risk of misunderstanding, misidentification, and misdiagnosis and require support and scaffolding from like-minded peers, mentors, and practitioners to meet the highly-profoundly gifted individual’s exceptionally unique educational and developmental needs and to provide fitting opportunities for positive growth and well-being.
Highly-profoundly gifted is defined as follows: significantly advanced cognitive abilities and development, as compared to those of peers in the chronological age group, experienced through heightened sensitivity, intensity, and awareness identifiable through social, emotional, physical, cognitive, and/or altruistic behaviors, developmental milestones, and life experiences across the life span [
1] (p. 146).
Overexcitabilities are the greater-than-typical responses of the nervous system distinguished in five forms [
2,
3]. The
primary overexcitabilities included emotional overexcitabilities (EMO OEs), intellectual overexcitabilities (INT OEs), and imaginational overexcitabilities (IMA OEs). Sensual overexcitabilities (SEN OEs) and psychomotor overexcitabilities (MOT OEs) are considered
secondary overexcitabilities [
3,
4]. In combination with other overexcitabilities, sensual OEs stimulate the senses, while psychomotor OEs engage the mind–body connection.
Psychiatrist and psychologist Kazimierz Dabrowski recognized that overexcitabilities occurred within the biological system of the individual (internally) and outside of the individual’s biological system (externally). For example, emotional OEs can be emotions that are deeply processed (internally) and displayed very strongly (externally). Intellectual OEs can be a strategic mindset (internally) and planned execution (externally). Imaginational OEs can be the development and visualization of ideas and possibilities in the mind (internally) and creative presentation (externally). Psychomotor OEs can be an intrinsic harnessing of energy (internally) and a physical release of energy through neuro-movement (externally). Sensual OEs can be a heightened sensory response (internally) and a displayed physiological response (externally) [
3,
4,
5,
6].
Overexcitabilities were first linked to highly-profoundly gifted children through Dabrowski [
2], who described the distinct nature of overexcitabilities among gifted adolescents. He discovered the developmental impact of special abilities and talents and greater-than-typical sensitivities, intensities, and awareness (overexcitabilities). Dabrowski incorporated these developmental discoveries into his human development theory, as two additional influences of developmental potential. More specifically,
developmental potential is made-up of the following:
- (1)
Physiology and genetic make-up;
- (2)
Social–environmental influences;
- (3)
Autonomous forces such as self-direction and independence, which Dabrowski termed the third factor;
- (4)
Overexcitabilities (emotional, intellectual, imaginational, psychomotor, and sensual);
- (5)
Special abilities and talents [
2,
3].
A recent literature review of highly-profoundly gifted children and overexcitabilities found connections between being highly-profoundly gifted and having overexcitabilities [
1]. Specifically, the authors found that Dabrowski’s [
2,
3] and Dabrowski’s and Piechowski’s [
5] observations of
higher-level overexcitabilities (the combination of multiple overexcitabilities acting together, including emotional, intellectual, and imaginational OEs) and the formation of
developmental dynamisms (higher-level overexcitabilities in the process of forming intuitive, emotional, and cognitive forces) described the significantly greater-than-typical sensitivities, intensities, and awareness observed in the advanced (and asynchronous) development of highly-profoundly gifted children. For example, the greater-than-typical zest for understanding, preference for complexity, and simultaneous synthesis of patterns, documented in highly-profoundly gifted children, included emotional, intellectual, and imaginational overexcitabilities acting together [
1].
These significantly greater-than-typical developmental differences have been studied for over 100 years by pioneer scholars including Terman [
7], Hollingworth [
8], and Gross [
9]. However, highly-profoundly gifted children’s educational and developmental needs go largely unmet. Neihart et al. [
10] realized that “the problems of social isolation, peer rejection, loneliness, and alienation that afflict many extremely gifted children arise not out of their exceptional intellectual abilities, but as a result of society’s response to them” [
10] (p. 25). Highly-profoundly gifted children continue to be at risk for misunderstanding, misidentification, and misdiagnosis [
11]. This systemic problem led to the following question: how can we inclusively identify highly-profoundly gifted children and adolescents to provide for their social–emotional well-being and educational development? Wood and Laycraft [
1] concluded that the assessment of higher-level overexcitabilities (and developmental dynamisms) could be an effective tool for identifying the greater-than-typical intensity and development of highly-profoundly gifted children. Further research to determine the prevalence of overexcitabilities in highly-profoundly gifted children was warranted.
The distinguishing developmental differences typically found in the highly-profoundly gifted population have not been considered in past quantitative studies of overexcitabilities [
1]. To date, Gallagher’s [
12] study was the only quantitative research study of highly gifted children and overexcitabilities found in the literature. Previous quantitative studies of overexcitabilities (most using a version of the OEQ II) and gifted and/or typical children included the United States, Belgium, Spain, China, Korea, Turkey, and Taiwan. In these previous studies, the children may have been part of a gifted program; however, no strict quantitative criteria, such as the documentation of an intelligence quotient (IQ) score, were required or cited [
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
28]. In previous studies, where giftedness was identified by an IQ score, the required IQ score was 120+ [
29] or 125+ [
30,
31]. Siu [
32] used standardized cognitive ability tests for the identification of gifted study participants, and Tieso [
33,
34] used standardized tests of achievement, ability, and creativity.
Previous research has found that gifted individuals have greater overexcitability scores than their typical peers. Overexcitability score differences varied depending on the form of overexcitability and the variables of the study. A meta-analysis conducted by Steenbergen-Hu [
35] found that giftedness was significantly correlated with all five forms of overexcitability. Steenbergen-Hu also found positive correlations between the presence of overexcitabilities and the level of giftedness. In a recent study of 108 children, ages 11–14 years, attending a charter school for highly gifted, Gallagher [
12] found that 40% of the children scored high on three or more forms of overexcitability on the OEQ II. Identification was based on attendance at the charter school, which required an IQ score of two to three standard deviations above the norm (or an IQ score of 130+) for admittance [
11].
According to Dabrowski’s human development theory, it is most appropriate for overexcitabilities to be understood as part of an individual’s holistic development and developmental potential [
36]. To fill the current gap in understanding, the primary focus of the current study was to examine the prevalence of all five forms of overexcitability (emotional, imaginational, intellectual, psychomotor, and sensual) in highly-profoundly gifted children and early adolescents. More specifically, the study aimed to answer the following research questions:
What is the prevalence of emotional, imaginational, intellectual, sensual, and psychomotor overexcitabilities in highly-profoundly gifted children ages 4 to 13 years when considering the differences according to gender, country, and age?
What is the prevalence of emotional, imaginational, intellectual, sensual, and psychomotor overexcitabilities in highly-profoundly gifted children ages 4 to 13 years considering their developmental milestones and their social, emotional, physical, cognitive, altruistic development, and life experiences, according to their parents’ perceptions?
What is the prevalence of emotional, imaginational, intellectual, sensual, and psychomotor overexcitabilities in highly-profoundly gifted children ages 4 to 13 years according to their developmental potential, defined as physiology and genetic make-up, social–environmental influences, autonomous forces, overexcitabilities, special abilities, and talents, according to their parents’ perceptions?
2. Materials and Methods
2.1. Study Sample
The sample consisted of 88 parents of highly-profoundly gifted children aged 4–13 years. The inclusion criteria stated that the participants must have the following:
- a.
Resided in the United States or Belgium;
- b.
Have a child who has been identified as highly or profoundly gifted via the Wechsler Intelligence Scale for Children, Fifth Edition (WISC-V) or other similar qualifying report;
- c.
Submitted child’s qualifying report for the verification of a full-scale intelligence quotient (IQ) or general ability index (GAI) of 140 or greater.
The study was advertised via flyers and distributed across a diverse group of organizations, online groups, podcasts, social media channels, and professionals serving gifted and highly-profoundly gifted children. Participants self-selected participation. Characteristics of the sample are displayed in
Table 1. Amongst the parents, 80 (91%) were mothers and 62 (70%) were from the U.S. Of the 88 highly-profoundly gifted children, 72% were boys, and the average age was 8.9 (SD = 2.28).
2.2. Measures
The current study employed a mixed-methods cohort study design to address the research questions. The Overexcitabilities Questionnaire II, Adapted, was used to assess the prevalence of emotional, imaginational, intellectual, psychomotor, and sensual overexcitabilities. Concurrently, the Development and Family History Questionnaire was used to obtain developmental milestones and to assess sensitivities, intensities, and awareness. The semi-structured interview was used to assess the prevalence of emotional, imaginational, intellectual, psychomotor, and sensual overexcitabilities in the developmental milestones and life experiences.
2.2.1. Overexcitability Questionnaire II, Adapted (OEQ II, Adapted)
The original OEQ II instrument consisted of 50 items, expressing the five types of overexcitabilities [
37]. Each form of overexcitability was represented with 10 items. Parents completed the questionnaire, responding to each item as it pertained to their child. Accordingly, items were modified to reflect the parents’ perspective. For example, “I’s” (e.g., I can take difficult concepts and translate them into something more understandable) were rewritten to be “my child” (e.g., my child can take an abstract idea or difficult concept and understand it in a simpler form). The five-point scale (1 = not at all like me, 2 = not much like me, 3 = somewhat like me, 4 = a lot like me, 5 = very much like me) was re-worded as 1 = none of the time, 2 = not much of the time, 3 = some of the time, 4 = a lot of the time, 5 = most of the time. Higher scores indicated a higher level of overexcitability. An OE score of 3.5 or higher indicated that the OE was experienced a lot of the time or most of the time according to the scale. A score of 3.5 aligned with the OEQ II manual [
36]. Gallagher [
12] also used 3.5 as the threshold for a “high” OE.
Additional modifications included adding examples to some of the original items to provide developmentally appropriate examples for the age range. For example, in the original OEQ II, item 25 reads, Theories get my mind going. In the adapted version, item 25 reads, Theories, possibilities, or poetic language can get my child’s mind going. Similarly, some of the items on the original OEQ II only provided an externally expressed example of the behavior. Dabrowski [
3] stated that overexcitabilities are expressed in both internal and external forms. Therefore, to capture both internal and external expressions of the behaviors of overexcitabilities, examples of both were incorporated into the items on the questionnaire.
Dexter Amend was consulted, and his suggestions were incorporated into the research instrument. Amend worked directly with Dabrowski as his graduate student [
38]. Amend recommended that the items be written as the parent would speak. He also was in favor of the additional examples and remarked that Dabrowski hoped others would continue to expand upon his work. Additional sample items from the adapted OEQ II and the corresponding overexcitability can be found in
Table 2. Approval was received from Frank Falk, creator of the OEQ II, to modify the original instrument and to translate the modified instrument to Dutch (See
Supplementary Materials S1: OEQ II, Adapted). For validation, the Dutch version was translated back by a separate, independent service.
The Cronbach alpha scores were satisfactory, and they are as follows: emotional OE: 7 items, alpha = 0.809; imaginational OE: 7 items, alpha = 0.857; intellectual OE: 7 items, alpha = 0.771; psychomotor OE: 7 items, alpha = 0.856; sensual OE: 10 items, alpha = 0.847. The total Cronbach alpha score was 0.91. The psychometric qualities of the instrument were calculated from the sample and the analyses used.
2.2.2. Development and Family History Questionnaire
The Development and Family History Questionnaire consisted of 57 items. A version was translated into Dutch for the Belgian study participants. The items included Likert scale items and open-ended questions, which offered the opportunity to describe and give examples. The questionnaire was a newly developed instrument created for a parent to complete about their child. As such, no validity measures have been reported. The questionnaire aimed to consider developmental traits, including sensitivities, intensities, and awareness exhibited by the child, at different stages of the child’s development, beginning at birth. Parents responded to questions about their child such as, my child slept…, my child interacted with others…, my child is sensory sensitive, intense, and/or aware.
Parents responded on a six-point Likert scale ranging from not at all to much more than their same-aged peers or not sure. Open-ended questions also allowed study participants to provide additional information, including the child’s family history. The onset of developmental milestones, such as, my child crawled, my child walked, my child recognized numbers, my child began reading, was collected in months.
2.2.3. Interview Protocol
Semi-structured interviews were conducted with parents. The original Overexcitability Questionnaire I open-response questions [
39] and Laycraft’s [
40] interview questions were considered in the development of the interview questions. The participants received the interview questions prior to the interview. The interview was guided by questions that aimed to elicit perspectives on the child’s social, emotional, physical, cognitive, and altruistic development and life experiences. The developmental potential of the child was also explored, including the physiology and genetic make-up, social–environmental influences, autonomous forces, overexcitabilities, and special abilities and talents. Narrative and thematic analysis was employed to consider the prevalence of overexcitabilities according to the parents’ descriptions and stories of their children’s behaviors, development, and life experiences.
2.3. Data Collection
The study went through Institutional Review Board (IRB) approval in the United States and Ethical Committee approval in Belgium. Upon seeing a flyer, participants emailed the research team. They were then given a consent form to review and sign. Subsequently, the parents completed a 60–90 min semi-structured interview via Zoom. The questionnaire was then emailed to the participating parent, who was instructed to complete the questionnaire and return it via email within two weeks of the interview.
2.4. Analysis
Descriptive statistics including means and standard deviations were gathered for the five forms of overexcitability from the OEQ II, Adapted (emotional OE, imaginational OE, intellectual OE, psychomotor OE, sensual OE). Overexcitability scores were calculated as the mean scores for each form. Mean scores were then compared by gender, country, and age. T-tests were used to determine any significant differences. Descriptive statistics of the scales are presented.
OE profiles were determined based on each child’s OE score. Only “high” OE scores (3.5 or greater) were included in the profile. A crosstabulation was used to indicate the high OE profiles by gender. A chi-square test of independence was performed to examine the relationship between gender and the “high” OE scores. Mean scores were gathered for the onset of developmental milestones from the Development and Family History Questionnaire.
The interviews were audio recorded and transcribed. The transcripts were individually reviewed for accuracy, and identifying information was retracted. The data were coded using thematic analysis via NVivo and Microsoft EXCEL [
40]. The thematic analysis was grounded by Dabrowski’s [
2,
3] descriptions of the five forms of overexcitability from his human development theory, the theory of positive disintegration. Specific codes included each of the five overexcitabilities.
Because the thematic analysis was grounded in Dabrowski’s human development theory, a second round of thematic analysis, focused on the five forms of overexcitability in the developmental potential of the children and adolescents. The researchers re-examined the coded overexcitabilities and categorized the overexcitabilities within the narrative data specific to the child’s family history and genetics; social and environmental influences; autonomous forces; special abilities and talents. The intercoder reliability included two coders, previous coding experience, weekly dialogues, and a consensus [
41,
42].
4. Discussion
This study found a distinctly high, universal prevalence of all five forms of overexcitability—emotional, imaginational, intellectual, psychomotor, and sensual—in the group of highly-profoundly gifted children ages 4–13 years. The distinct overexcitability findings among the highly-profoundly gifted children included the following:
A universal high prevalence of all five forms of overexcitability—the most prevalent high OE profile;
No significant differences by gender—when considering high OEs;
Higher-level overexcitabilities—three or more overexcitabilities acting together, including emotional, imaginational, and intellectual, and the formation of developmental dynamisms.
It is important to realize the role the interviews played in the authentic collection of data. In the interviews, study participants described multiple overexcitabilities together, allowing the prevalence of higher-level overexcitabilities and the beginning of the formation of developmental dynamisms to be realized. The presence of higher-level overexcitabilities would not have been captured without the interview method. This is because the OEQ II questionnaires were constructed to measure the five forms of overexcitability as individually expressed forms. The semi-structured interviews allowed for organic descriptions and life examples of the children’s development from their parents. This semi-structured narrative approach gave the study participant the flexibility to describe their child rather than to interpret their child. Furthermore, parents may not realize the expressions of overexcitabilities in their children. Overexcitabilities may be occurring internally within the child and, therefore, be hard to discern. For example, one parent stated the following in the interview:
“When they play with Legos, eyes are twinkling, nose is curling, they get totally into flow, becomes very creative, and thinks very out-of-the-box. I thought they didn’t have that much of an imagination, but they said, ‘yes, I do when I am reading and when I am playing with Legos’. They said themself, that they can really go into the story and into the new worlds.”
The complexity of imaginational overexcitability was an unexpected finding. This study uncovered the need for more in-depth knowledge and training on the traits, behaviors, and development of imaginational overexcitabilities. Higher-level imaginational overexcitabilities include abstract, intuitive, and empathic behaviors and development [
3]. Nearly all of the study participants described abstract, intuitive, and/or empathic behaviors in the development of their children; however, not all of the children’s imaginational overexcitability score met the threshold for high imaginational overexcitability on the questionnaire. Again, this could be due to the limitation of the instrument. The nature and behaviors of imaginational overexcitability may be difficult to represent as an individually expressed form.
4.1. Developmental Theoretical Framework
Dabrowski realized that higher-level imaginational overexcitability was complex and relied on higher-level emotional and intellectual overexcitabilities to develop [
3,
5]. Higher-level imaginational overexcitability includes the ability to acutely see and/or create the abstract; to connect and/or intuit; to visualize and/or create the future; to mentally picture and/or tangibly demonstrate how something
could be [
1,
4,
5,
6,
43]. Higher-level overexcitabilities include both internal and external responses and may be exhibited in the holistic development or developmental potential of the individual. Through the attuned ability to anticipate, higher-level imaginational overexcitability also plays a role in the ability to empathize [
3]. Higher-level imaginational overexcitability allows the individual to feel what another person is feeling in multiple realms emotionally, intellectually, and physically. Laycraft [
44] identified this ability as Mental Time Travel (MTT). Through episodic autobiographical memory (a neurological imprint of the individual’s experience in a specific place and time), higher-level emotional and intellectual overexcitabilities combine with higher-level imaginational overexcitability and allow the individual to use their affective memory and perception to understand, anticipate, and experience an event [
44].
4.1.1. Multi-Level Development
Dabrowski found this significantly greater-than-typical sensitivity, intensity, and awareness prevalent at higher-levels of development [
2,
3]. In his human development theory, the theory of positive disintegration, Dabrowski eliminated the focus on chronological age and the expectation of linear sequential development. Instead, Dabrowski viewed the individual as a unique being with unique social, emotional, physical, cognitive, and altruistic development and developmental potential. Through his observations and studies, he distinguished five levels of development. He referred to primary development as primary integration (Level I), followed by unilevel disintegration (Level II) [
2,
3,
5].
4.1.2. Level III—Higher-Level Overexcitabilities
It was at Level III of development (spontaneous multi-level disintegration) where Dabrowski observed that behaviors and development became distinctly different [
2,
3]. In Level III, there is a transition from unilevel to multi-level development. Significantly greater-than-typical sensitivity, intensity, and awareness are evident. Multiple higher-level overexcitabilities interact together and further develop.
Dabrowski recognized that higher-level emotional overexcitability strongly influenced the other forms of higher-level overexcitabilities; and through continued development, higher-level overexcitabilities formed developmental dynamisms. Every dynamism includes higher-level emotional overexcitability [
2,
3]. The development of higher-level emotional, intellectual, and imaginational overexcitabilities (the primary overexcitabilities) gives rise to the formation of the third factor. The third factor of an individual’s developmental potential is the first and most influential developmental dynamism to form. During development, an individual’s attention turns inward, and the development of autonomy and self-awareness is ignited [
2,
3]. A distinctly high prevalence of all five forms of overexcitability and combinations of three or more overexcitabilities, including higher-level emotional, intellectual, and imaginational overexcitabilities, were found in the highly-profoundly gifted children studied.
Dabrowski distinguished between independent, lower-level overexcitabilities, and higher-level overexcitabilities. The greater complexity of higher-level imaginational overexcitability, the greater depth and persistence of higher-level intellectual overexcitability, and the greater passion and motivation of emotional overexcitability are the result of higher levels of development [
2,
3]. According to Dabrowski, lower-level overexcitabilities (one or two overexcitabilities) may occur at Levels I and II of development. However, it is important to note that the display of one or two overexcitabilities is developmentally different from the interaction of three or more developing overexcitabilities. The distinctly different combination of three or more overexcitabilities (including emotional, intellectual, and imaginational) interacting together occur at higher levels of development, beginning at Level III [
2,
3]. Narrative examples of higher-level overexcitabilities from the interviews can be found in
Table 7,
Table 8 and
Table 9.
Dabrowski’s theoretical framework is important for understanding authentic human development and developmental potential. It is important for parents, teachers, school administrators, psychologists, and pediatricians working with or assessing the well-being of gifted children to know, understand, and be able to differentiate between independent overexcitabilities and the combinations of higher-level overexcitabilities. Higher-level overexcitabilities are an indicator of development in motion. They are holistic in nature. Higher-level overexcitabilities are combinations of multiple overexcitabilities interacting together to further the development of the individual. An independent overexcitability acting alone, such as psychomotor overexcitability, is a greater-than-typical response of the neuromuscular system alone.
4.1.3. Developmental Dynamisms
In Level III (spontaneous multi-level disintegration), higher-level forms of emotional, intellectual, and imaginational overexcitabilities, enhanced by psychomotor and/or sensual overexcitabilities, combine to begin to form developmental dynamisms [
5]. Developmental dynamisms continue to develop in Level IV (organized multi-level integration). Dynamisms do not exist within developmental Levels I and II.
The formation of developmental dynamisms cannot be captured using the OEQ II. However, in the semi-structured interviews, examples of the beginning of the formation of developmental dynamisms were described in the narratives of the children’s lived experiences. Developing dynamisms from the interviews included the following:
The third factor—autonomous forces (self-development; an internal compass; a sense of direction or responsibility);
Example: “They feel the weight of the world” (p. 10).
Disquietude with oneself (self-criticism);
Example: “Would listen to comparable pieces played by well-known pianists; they would compare the pieces to what they think they should be good at, which is the original recording. And get frustrated when they couldn’t perform the way it is.”
Dissatisfaction with oneself (self-judgment, high expectations, frustration, perfectionism);
Example: “Very, perfectionist; will practice a particular phrase many times; if they couldn’t do it, right, the way they wanted it, they get frustrated; sometimes affects mood.”
Feelings of inferiority (self-awareness in relation to self-potential);
Examples of thoughts of self-harm were evident in some of the interviews.
Feelings of embarrassment, shame, guilt (self-conscious);
Example: “If they did something wrong, they said, they would think, I’m stupid. They would feel upset and cry and just kept saying, I’m stupid.”
Self-education;
Example: “Basically self-taught all the way; never been to school or had math instruction; have done really well on own; solves problems very original… Always does math own way. I don’t know how they do it, they skip steps… I don’t know how they put it together.”
Positive maladjustment (the connection to one’s true values);
Example: “They can get very emotional (when) being treated incorrectly…” (p. 10).
Creativity (the propensity to see beyond, the desire for novelty, enhancements);
Example: “They said that the ones you could buy at the store weren’t good enough for them. And so they started making their own with Lego pieces. Theirs did much better. And actually, they drew schematics and wanted me to send it to (the company) …”
Subject-object in oneself (self-observation, self-evaluation);
Example: “Oh, mommy that felt white like water” (p. 14).
Education of oneself (self-directed development through one’s own hierarchy of values);
Example: … “they needed that story to go to school because they were not happy at that school. So that’s how it started and now the story has evolved. They try to basically deal with the actualities, the current events in life; to deal with them through those stories almost” (p. 9).
Empathy (deep sense of connection, care, compassion, and altruism) [
5,
43,
44];
Example: … “the teacher wasn’t angry at my child, but they really didn’t like the atmosphere and they didn’t like that it was unfair. So even though my child was not affected (the teacher was not angry at my child), they still took it home” (p. 11).
Dynamisms are intuitive forces. They reorganize human development into instinctual, emotional, and cognitive forces [
3,
45,
46]. Throughout this higher-level developmental process, dynamisms (combinations of higher-level overexcitabilities) interact with the other factors and influences of developmental potential, including the biological make-up of the individual, social–environmental influences, autonomous forces, and special abilities and talents. Dynamisms can interact synergistically or antagonistically depending on the individual’s development and developmental potential [
3,
45,
46]. Those dynamisms that are marked by organized multi-level disintegration have reached Level IV [
3].
The continued development of dynamisms is a growth-oriented developmental process; however, it is not linear sequential, and it is not simple. It is turbulent and often described as “chaotic” [
2,
3,
45]. Dabrowski stated that few individuals will reach the fourth and final level of development (Level V, secondary integration). It is a complex, multi-level within a level, up and down, developmental process. Dabrowski named this human development experience the theory of positive disintegration, to denote the extraordinary development that occurs when the individual’s unique developmental and developmental potential are supported through the naturally turbulent process of human development [
2,
3,
45]. Overexcitabilities and developmental dynamisms are the extraordinary forces and energy, the physics, behind higher levels of human development [
5].
4.1.4. Developmental Potential
Family History and Genetics
A family history of giftedness was found in 89% of the highly-profoundly gifted children and adolescents. These findings aligned with Silverman’s [
47] findings that siblings were usually within 10 IQ points of each other; 33% of the siblings studied were within five IQ points. Silverman also found a familial history of giftedness among parents and grandparents.
Social–Environmental Influences
Dabrowski viewed social–environmental influences as one of the most fluid components of developmental potential. An individual’s developmental potential is supported when there is space and opportunity for growth [
3]. Overexcitabilities and the formation of developmental dynamisms were evident in the children’s social–environmental influences. For instance, in the first example (p. 13), it is important to realize that multiple overexcitabilities were being expressed by the child at the same time. Furthermore, it is important to realize that these expressions of growth-oriented, higher-level overexcitabilities occurred while interacting with a sibling and a “passion mentor”. “When my child is talking to their ‘passion mentor’, there is not an ounce of slowness or sloth in that body. My child is fully engaged. My child is active. My child is ‘on’.”
In the second example (p. 13), it is important to note the child’s calm demeanor and expression of overexcitabilities as well as the change in the child’s demeanor and expression. Upon entering kindergarten, the child went from “this sense of awe and wonder of everything about them to, ‘I don’t want to go to school.’” It is important to realize that overexcitabilities can be expressed introspectively. Expressions are not always overt as the term suggests. It is also important to realize the connection between higher-level overexcitabilities and cognitive ability as reconciled by the child’s parent. “They came out of these long, difficult tests of their IQ and said, ‘oh, mommy that felt white like water.’ It was the most profound moment, for me as a parent, knowing there’s something inside of my child, that because my child is of such a calm demeanor, we didn’t notice before.”
Social–environmental influences aid the development of dynamisms synergistically or antagonistically. To support an individual’s positive development and developmental potential, stakeholders need to pay close attention to the social–environmental influences and the individual’s responses to those influences. Stakeholders also need to understand that overexcitabilities can be expressed internally and that the development of dynamisms involves an introspective nature.
Autonomous Forces
Dabrowski believed that an individual’s developmental potential was driven by autonomous forces and the unique journey through the how and why, the ebb and flow, the disintegration, and rise to the most authentic self [
2,
3,
45,
46,
47,
48,
49,
50,
51]. Autonomous forces combined with the other unique factors and influences, including overexcitabilities and developmental dynamisms, lead the individual through periods of growth, contemplation, and disintegration, in a unique pattern and length of time, organic to the developmental potential of the individual [
2,
3,
45,
46].
Special Abilities and Talents
The highly-profoundly gifted children and adolescents in the study sample are considered a special population with an IQ of 140 or greater. The narratives shared from the interviews touched on their array of special abilities and talents. Their developmental milestones were remarkable. For instance, the onset of crawling for the highly-profoundly gifted children studied was 5.2 months on average. In the World Health Organization Study [
48] of 816 children, only 1% of the children crawled at 5.2 months. Dabrowski [
49] found that the combinations of higher-level emotional, intellectual, and imaginational overexcitabilities and developmental dynamisms from childhood were associated with greater-than-typical abilities and “accelerated, universal development.”
“We observe above average abilities in many areas, emotional richness, and depth, and multiple and strong manifestations of psychic overexcitability… One may observe from childhood difficulties of adjustment, serious developmental crises, psychoneurotic processes, and a tendency toward disintegration of lower levels of functioning and reaching toward higher levels of functioning. This, however, does not occur without disturbances and disharmony with their external environment and within their internal environment. Feelings of ‘otherness’ and strangeness are not uncommon. We find this in gifted children, creative and prominent personalities, men of genius, i.e., those who contribute new discoveries and new values [
49] (p. 30, from [
3]).”
5. Conclusions
A distinctly high, universal prevalence of all five forms of overexcitability, emotional, imaginational, intellectual, psychomotor, and sensual, was found in the international study of highly-profoundly gifted children aged 4–13 years. Higher-level overexcitabilities—as described by Dabrowski—were found in the combinations of three or more overexcitabilities occurring together, including emotional, intellectual, and imaginational. Developmental manifestations were described in the children’s purposeful movement, expressive emotions, relentless desire for truth and understanding, and intuitive outcomes. A family history of profound giftedness was documented. The effect of social–environmental influences was profound. Autonomous forces, including distinct independence, self-initiation, and self-education, were part of the children’s everyday lived experiences. The beginning of the formation of developmental dynamisms, including the third factor, was described. Special abilities and talents were evident, and early developmental milestones were remarkable.
These findings warrant the assessment of overexcitabilities in the identification process of giftedness, especially highly-profoundly gifted children and adolescents. Gallagher’s [
12] study also concluded that multiple overexcitabilities were prevalent in the highly gifted students studied. These new findings specific to the distinct developmental differences of the highly-profoundly gifted population need to be incorporated into the identification process. An identification process based solely on quantitative cognitive abilities alone does not capture all of the distinct developmental differences related to cognitive ability in the highly-profoundly gifted population. The historical misunderstanding, misidentification, and misdiagnosis of highly-profoundly gifted individuals can be curbed through the identification and developmental support of overexcitabilities. Professional development and training for parents, educators, and practitioners are warranted.
Overexcitabilities, with respect to the social–environmental component of developmental potential, were especially impactful and appeared to have the greatest impact on the developing child. The examples emphasized the importance of identifying and supporting the needs of the child, such as the need for like-minded peers and mentors. The significant differences in the child’s behaviors and interactions (demonstrated in the examples), with and without like-minded peers and mentors, should be used as an exemplar when assessing appropriate environments. Overall, the children’s experiences were more positive when they felt emotionally and physically safe; when they felt understood and respected; and when they were given the space and latitude to authentically develop.
The identification of multiple higher-level overexcitabilities reminds us that the child experiences significantly greater-than-typical emotional, intellectual, imaginational, psychomotor, and sensual sensitivity, intensity, and awareness as part of their development. Overexcitabilities in relation to the social environment can be experienced internally or externally and can lead toward positive or disintegrating development depending on the make-up of all the factors and influences. Parents, teachers, school administrators, psychologists, and pediatricians need to fulfill these basic needs through this greater-than-typical developmental lens.
Stakeholders responsible for the developmental and educational needs of highly-profoundly gifted children need to consider the following questions: What are the long-term impacts of positive and/or negative influences? What internal impacts are going unnoticed? How much development and potential are being sacrificed? And at what social, emotional, physical, cognitive, and altruistic cost to the child? Overexcitabilities have roots in the individual’s biological make-up, autonomous forces, social–environmental influences, and development of special abilities and talents. Future in-depth analysis, with respect to the physiology and genetic make-up of the children, was tabled for future papers. Further analysis of the data with respect to each influence of developmental potential could reveal additional findings and understandings.
5.1. Benefits of a Mixed-Methods Study
The value of a mixed-methods study was evident. Additional and more thorough understandings were gained by collecting both quantitative and qualitative data. Through the interviews, distinct combinations of higher-level overexcitabilities were found in addition to the high prevalence of all five forms of overexcitability. The research team noted valuable considerations for including the interview method in the study of overexcitabilities, development, and developmental potential. It was acknowledged that the parents were very good at describing their child’s behaviors in the interviews. It was also realized that it may be harder for the parent to interpret their child’s behaviors, based on the items on the OEQ II questionnaire, compared to describing their child’s behaviors in an interview. The parents may not realize the expressions of overexcitabilities in their child; overexcitabilities may occur internally within the child. It was learned that parents may find it difficult to discern greater-than-typical sensitivity, intensity, awareness, or unique developmental milestones. It was noted through the interviews that if greater-than-typical development was typical for a family, it may go unnoticed.
5.2. Limitations
The number of study participants (88) could be considered a limitation. Individuals with an IQ score of 145+ are estimated to be 0.13% of the population or 13 out of 10,000 individuals [
50]. Therefore, the research team expected the number of study participants to be significantly less than a study of the typical population. Gross’ study [
9] consisted of 60 children. To the best of our knowledge, the present study is the largest mixed-methods, international study of highly-profoundly gifted children and overexcitabilities. The number of girls (N = 25) and the number of children within the age range were limitations. However, the mean OE scores were similar throughout the age range (4–13) and there was no significant difference between the boys and the girls when considering the most prevalent “high” OE profile. Additional awareness and studies of highly-profoundly gifted girls specific to overexcitabilities, higher-level overexcitabilities, development, and developmental potential are warranted.
The quantitative and qualitative results were both homogeneous. Little scatter existed. The greatest scatter was found in the imaginational overexcitability scores on the OEQ II, Adapted. Scatter may be expected in a general population; however, it is essential to consider the study through the lens of the population being studied. In a study of a specific population, highly-profoundly gifted children and early adolescents with a documented WISC IQ score of 140+, accepting a limited (n) was necessary to uncover and understand what is typical for a statistically rare population.
5.3. Recommendations
The Overexcitability Questionnaire (OEQ II), Adapted, results showed a statistically valid and reliable high prevalence of overexcitabilities in highly-profoundly gifted children and adolescents. Therefore, an overexcitabilities assessment should be part of the gifted identification process. In practice, it is recommended that the OEQ II, Adapted, be used as the start of universal screening to consider the development and developmental potential of giftedness.
It is recommended that K-8 superintendents, school administrators, and gifted coordinators implement a school-wide assessment of overexcitabilities as part of a holistic screening process for giftedness beginning in kindergarten. The earlier the identification of giftedness, the better the prognosis for the highly-profoundly gifted individual [
1,
7,
8,
9,
51]. It is suggested that the OEQ II, Adapted, be filled out by a caretaker of incoming kindergarten students and at grade-level assessment checkpoints. Children who score some of the time, a lot of the time, or most of the time on three or more overexcitabilities including emotional and intellectual should be further assessed. Quantitative (IQ and/or achievement assessment) and qualitative (social, emotional, physical, cognitive, and altruistic developmental and developmental potential) measures should be followed to properly assess and identify the continuum of giftedness.
For parents and teachers, it is recommended to seek an assessment of overexcitabilities and giftedness for those children and adolescents with behaviors and development similar to the highly-profoundly gifted children examined in this study. To start, complete the OEQ II, Adapted, on behalf of the child. Next, inquire with your school or a trained professional. Seek advice from a professional who is experienced in the assessment of the continuum of gifted behaviors and development. A comprehensive assessment of development and developmental potential may be warranted to determine giftedness. Without a thorough assessment of an individual’s development and developmental potential, including higher-level overexcitabilities and developmental dynamisms, some highly-profoundly gifted individuals will continue to go unidentified, misidentified, or tragically, misdiagnosed.
For psychologists and psychiatrists, a comprehensive assessment model is recommended. The Wood assessment model outlines an ideal holistic approach using Dabrowski’s human development theory (Wood, n.d.). The assessment of social, emotional, physical, cognitive, and altruistic development and developmental potential (family history, autonomous forces, social–environmental influences, higher-level overexcitabilities, developmental dynamisms, and special abilities and talents) is essential for an appropriate assessment. For quantitative assessment, the current gold standard is the individual administration of the WISC-V by a qualified administrator trained in the typical behaviors and development of giftedness and highly-profoundly gifted children [
51]. A professional with training in profound giftedness will have the most thorough understanding of the continuum of giftedness.
For pediatricians, it is recommended that the OEQ II, Adapted, be incorporated into yearly visits with every child beginning in infancy. Inquiring about and discussing the child’s developmental milestones, including social, emotional, physical, cognitive, and altruistic development and developmental potential, and educating the parents on the early signs of gifted development can position the child for appropriate educational placement beginning in kindergarten. Assessment referrals should be trained and experienced in the development of profound giftedness as indicated above. The history of the child’s developmental milestones is an important assessment of the child’s overall growth, development, and well-being. It can play an important role in the assessment of giftedness and profound giftedness. See
Table 6 to reference the onset of developmental milestones in this study.
For researchers, the assessment of higher-level overexcitabilities and developmental dynamisms needs to be incorporated into the identification process because higher-level overexcitabilities and developmental dynamisms constitute the development and developmental potential of highly-profoundly gifted individuals. Future versions of the OEQ II might consider how to capture the combination of multiple higher-level overexcitabilities and developmental dynamisms. This may require the thoughtful construction of a new instrument. Additional research is warranted to continue to build on this body of research data specific to the highly-profoundly gifted population. Studies in the neurological functioning, physiology, and genetic make-up of the highly-profoundly gifted population are warranted and potentially essential to the well-being of this population throughout the lifespan.