1. Introduction
The prevalence of developmental disorders in early childhood has been increasing worldwide, posing significant challenges to children’s learning, behavior, and long-term participation in educational and social contexts [
1]. In response to this global trend, early childhood intervention (ECI) has been internationally recognized as a key strategy for promoting children’s development and preventing long-term functional limitations, particularly for children with developmental disabilities or at risk of developmental delay [
2,
3,
4]. Contemporary ECI frameworks emphasize a holistic and bioecological perspective, in which child development is understood as the result of dynamic interactions between the child, the family, educational settings, and the broader community [
5,
6,
7,
8]. Evidence from community-based programs indicates that fostering participation in natural routines and strengthening the role of caregivers and practitioners within proximal processes are essential for children’s optimal development. Successful intervention depends on achieving a dynamic and adaptive fit between the child’s strengths and needs and the affordances of their immediate environments in which they grow and participate [
5,
6,
7,
8].
Globally, leading scientific and professional organizations in early childhood development, such as the World Health Organization [
9], the Division for Early Childhood (DEC) of the Council for Exceptional Children [
10], Zero to Three Organization [
11] and United Nations Children’s Fund (UNICEF) [
12,
13,
14], advocate for family-centered, community-based, and inclusive, early intervention models. These approaches emphasize partnerships with families, collaboration across health and early childhood education systems, and the use of natural learning environments as primary contexts for intervention [
5,
6,
7,
9,
10,
11,
12,
13,
14]. International recommendations consistently highlight the importance of evidence-based practices, including interprofessional collaboration, shared decision-making, and the promotion of children’s participation in meaningful daily routines at home, in early education settings, and within the community [
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22]. It also highlights the importance of ensuring that all children, from pregnancy through to 8 years of age, have access to the conditions necessary for healthy and holistic development [
14]. Empirical evidence demonstrates that such practices are associated with positive outcomes in children’s cognitive, language, motor, and socio-emotional development, while also strengthening family well-being and empowerment [
5,
6,
7,
15,
16,
17,
18,
19].
Research grounded in this perspective underscores that the effectiveness of early intervention depends not only on program content, but also on organizational conditions, interprofessional collaboration, and system coherence across sectors [
21].
Within this international landscape, the Portuguese ECI system aligns closely with globally recognized principles of high-quality ECI; however, certain practices require reconsideration and further improvement, considering the country’s specific socio-political and cultural contexts.
1.1. Research Problem
In Portugal, ECI is coordinated through the National ECI System (SNIPI), defined in Decree-Law N°. 281/2009 [
10]. This nationwide, intersectoral system, jointly overseen by the Ministries of Health, Education, and Labour and Social Security [
16,
17,
18,
19]. At the national level, SNIPI is jointly overseen by the respective ministries, which are responsible for strategic planning, policy development, and the definition of technical guidelines [
16,
20]. The regional coordination teams are responsible for adapting and supervising the implementation of national directives, promoting intersectoral collaboration, and supporting the evaluation of service quality across regions [
17]. At the local level, the system is operationalized through the Local Intervention Teams (ELIs), which constitute the core of SNIPI’s service delivery [
17]. This organizational structure is intended to promote accessibility and ensure equity in the provision of ECI services [
17].
SNIPI is grounded in a family-centered and transdisciplinary model to support children from birth to six years of age and their families. Intervention is delivered primarily through ELIs, multidisciplinary teams composed of professionals from the health, education, and social sectors, responsible for early identification, functional assessment, and the implementation of individualized and family-centered support within children’s natural environments [
16,
17].
Despite the existing legislation, challenges remain regarding accessibility and territorial equity. Regarding SNIPI data from 2024, the number of children awaiting intervention, in relation to the total number of children referenced, a total of 3517 (32%) (at the national level) were waiting for intervention [
21]. This finding underscores the need to strengthen policies and strategies that ensure equal opportunities for all children and families, providing equitable access to benefits and support, and highlights the importance of updating national policies to achieve these goals [
22].
1.2. Contextual and Theoretical Background
Recognizing the need to improve the quality of care provided in Early Childhood Intervention (ECI), policy makers considered it crucial to launch a dedicated research call, allowing scientific evidence to inform and enhance decision-making in this field. Within this context, the PS4Child project was developed, constituting the point of departure for the present study. The project was funded under the Science4Policy 2024 initiative promoted by the Foundation for Science and Technology (FCT), in collaboration with the Centre for Planning and Evaluation of Public Policies (PlanAPP) [
23].
Consistent with international initiatives led by scientific organizations dedicated to child development. The project aims to support the development of applied scientific research for public policies, encouraging the production of knowledge and evidence that strengthens the internal policies of the Portuguese Public Administration. PS4Child project’s overall objective is to contribute to informing the development of public policies that strengthen the functioning of the SNIPI and to contribute to the improvement of the accessibility and quality of responses to the individual needs of children and families within the scope of early childhood intervention, ensuring the effectiveness and sustainability of the interventions implemented. Project implementation involved cooperation with national and regional entities.
From a theoretical standpoint, the project is informed by bioecological models of development, which emphasize the central role of proximal processes and the interaction between children, caregivers, professionals, and everyday contexts over time [
18,
19,
20]. By emphasizing partnerships and shared decision-making, current practices have shifted away from older, deficit-focused models. Today, the focus is now on participatory strategies that support child development while strengthening the family unit, a direction strongly supported by both international guidelines and national empirical evidence [
22,
24]. Developmentally oriented frameworks suggest that translating concepts into practice is highly dependent on organizational conditions, effective teamwork, and system coherence [
25,
26]. This places ECI professionals at the very heart of service implementation. Their privileged position provides critical insight into how intervention principles are operationalized, revealing specific organizational barriers and resources that shape their work. Consequently, examining professionals’ perspectives is essential for understanding gaps between intended family-centered models and everyday practice, and for informing strategies aimed at improving service quality [
15,
27,
28,
29].
In light of this, the present study aims to explore early intervention professionals’ perspectives on the main barriers, facilitators, and priority areas for improvement within Portugal’s National ECI System, contributing to the international discussion on how evidence-based, family-centered early intervention models can be strengthened within complex, intersectoral service systems.
4. Discussion
This study provides an in-depth understanding of the organization and implementation of SNIPI in everyday practice from the perspective of professionals working in ELIs. By examining professionals’ views on system organization, functioning, access, and working conditions, the findings reveal both strengths and areas for improvement in Portuguese ECI. Although the majority of participants (66%) perceived SNIPI as functioning well, they also indicated that current policies only partially meet existing ECI needs. This suggests that while the structural framework is robust, operational challenges persist, limiting the system’s responsiveness and coverage.
Findings regarding the professional profile of ELI staff participating in the study indicate that ECI in Portugal is predominantly delivered by experienced professionals (mean = 19.5 ± 10.3 years) who are highly qualified. The majority are women (94%) working in health-related fields (56%), with smaller proportions coming from education (25%) and social services (7%). The results indicate that 89% of participants have a permanent contract; however, only 45% are employed full-time in ELIs. This limited level of dedication may compromise the quality and timeliness of care delivery. Although this profile is consistent with international evidence describing the feminization of the workforce in child development and early intervention services [
26], it underscores the need to consider workload distribution and dedication as key determinants of service quality.
The multidisciplinary composition of teams, integrating professionals from health, education, and social services sectors, reflects the intersectoral nature of SNIPI and aligns with a systemic and ecological understanding of child development. From a bioecological perspective, this intersectoral composition supports the articulation of multiple microsystems and mesosystems surrounding the child and family, a core principle of Bronfenbrenner’s Process–Person–Context–Time (PPCT) model [
33]. However, despite this favorable profile, participants consistently reported organizational constraints, namely a limited capacity to respond to the number of referrals (79%), associated with low human resources; delays in the first contact with families and children following referral (1.5 ± 1.8 months); and high workload demands on professionals. These conditions may undermine the continuity and quality of proximal processes, defined within the PPCT framework as sustained, reciprocal interactions between children, caregivers, and professionals over time. This finding reinforces the existing evidence that the effectiveness of early intervention depends not only on professional competence and dedication, but also on organizational and systemic conditions that enable consistent, relationship-based practice [
24]. These findings reinforce international evidence that professional competence alone is insufficient; organizational and systemic conditions are essential to ensure consistent, relationship-based interventions [
22,
25,
27,
33].
Participants also identified training in educational programs for ELIs as a priority. Although 62% reported having received training, there was a recognized need for further development of both hard and soft skills in early childhood intervention (ECI). Among professionals who reported having undertaken training in this area, 88% indicated that it was provided by SNIPI, revealing an asymmetric distribution of training opportunities.
This highlights the need to broaden access to both technical and interpersonal skill development, supporting the capacity of professionals to implement high-quality, family-centered practices.
Results also indicate a strong alignment of professionals’ discourse and intentions with family-centered principles. Families are actively involved throughout the intervention process, including needs identification, goal setting, implementation, and evaluation of the Individual Early Intervention Plan (PIIP). The PIIP is described as a collaborative and family-owned tool, grounded in family priorities and daily routines, consistent with international recommendations for family-centered ECI [
4,
34]. Silva et al. [
23] similarly emphasize that effective early intervention in educational contexts is characterized by close collaboration with families, shared decision-making, and interventions embedded in natural routines. From a PPCT perspective, these practices enhance the quality of proximal processes by aligning intervention activities with meaningful everyday interactions. However, professionals also acknowledged that full implementation of family-centered practices is constrained by organizational factors such as limited time, high caseloads, and insufficient resources. These constraints restrict relational proximity, continuity of support, and the flexibility required to adapt interventions to families’ contextual realities. Family availability, influenced by work conditions, economic resources, emotional stress, and health factors, was identified as a critical determinant of engagement. Such contextual variables correspond to person and context characteristics within the PPCT model that modulate the intensity and effectiveness of proximal processes. The literature consistently demonstrates that interventions sensitive to these contextual conditions, and paced according to family rhythms, are more likely to promote sustained engagement and positive developmental outcomes [
4,
28]. Nonetheless, systemic barriers continue to limit the capacity of professionals to operate these principles consistently [
25,
26].
Overall, the professionals’ perspectives reveal that SNIPI is grounded in a robust conceptual and legal framework aligned with international standards and bioecological principles. However, its daily operationalization remains constrained by persistent structural and organizational barriers, particularly insufficient human resources, high caseloads, limited available time, perceived inadequacy of public investment in early intervention, and fragilities in intersectoral coordination. These constraints compromise the response capacity across teams and limit the consistent implementation of family-centered practices, helping explain difficulties related to access, continuity, monitoring, and quality assurance across ELIs. National and international evidence underscores that sustainable early intervention systems require long-term investment, workforce stability, continuous professional development, and organizational structures that support reflective practice and intersectoral coordination [
14,
15,
22,
26].
The participants identified three principal potential facilitators in the ECI response, such as awareness and outreach, which could be enhanced through greater dissemination and availability of information about the system. This idea is supported by D’Agostino et al. [
35] and Milat et al. [
36], who emphasize the importance of active dissemination in promoting the implementation of evidence-based practices, which are crucial to quality care. Encompassing families, professionals and even community awareness for the process, everyone can play an active and efficient role in the implementation of protective measures, facilitating access, and work system quality, which are crucial to early interventions. Potential facilitators for implementing faster and more streamlined processes in the ECI context were also identified, including the use of standardized protocols and checklists, as well as ensuring tools to share information among all stakeholders. The use of checklists is considered important for standardizing practices and compiling relevant information to support professionals in decision-making within ECIs [
37,
38]. Effective communication and information sharing among services and stakeholders are key for coordinated and high-quality early intervention delivery [
39]. Ineffective communication has also been reported as a main reason for limitations to collaborative work and effective interventions [
39]. The use of universally applied instruments was considered important for collaborative work. In the present study, 63% of participants reported using validated tools to support their daily practice; however, no single tool is used consistently across all ELIs.
The participation of families was identified as a crucial facilitating factor by all survey participants. Accordingly, families should be encouraged to engage actively, and it is essential to provide them with the necessary support. Current international guidelines underscore that effective ECI requires integrated and equitable systems capable of supporting children within their everyday environments while strengthening families and caregivers as central agents of development [
26]. In line with these international recommendations, research in ECI has consistently highlighted family-centered approaches as a key framework for promoting both child development and family well-being. Family-centered care is built on a cooperative and collaborative relationship between families and professionals, which is consistently associated with beneficial outcomes for both caregivers and children. As highlighted by Jiménez-Arber et al. [
35], these approaches facilitate the meaningful involvement of families in decision-making processes. This active participation promotes feelings of competence, satisfaction, and essential empowerment among those involved. These findings align with complementary evidence showing that family-centered practices enhance parental empowerment, strengthen family functioning, and help parents better understand their children’s developmental needs [
40,
41]. Störbeck [
4] reinforces this as the recommended model for ECI, emphasizing that collaborative partnerships and shared decision-making are key to promoting children’s participation within their everyday, natural environments.
A systematic review by Pacheco-Molero et al. [
27] reveals that implementing high-quality family-centered ECI is far from simple. In fact, it faces a complex web of barriers at individual, organizational, and systemic levels. These obstacles range from gaps in professional preparation and rigid working conditions to broader legislative hurdles. Crucially, the authors argue that we cannot resolve these challenges through individual professional effort alone. Instead, they demand sustained, coordinated action across policy frameworks and service organizations. Achieving genuine family-centered intervention, therefore, requires a paradigm shift, one supported by coherent institutional structures and long-term investment. While family-centered approaches provide the guiding principles for early childhood intervention, understanding how these principles are translated into everyday practice requires a theoretical framework capable of capturing the complexity of interactions between children, families, professionals, and service systems.
Participants reported the existence of community articulation resources; however, their utilization was limited by multiple factors, including a lack of interest, the absence of clearly established priority pathways, and insufficient time allocated for intervention. This finding highlights a critical gap in the operationalization of intersectoral collaboration, as community resources are essential for early disability identification and timely access to ECI services. From a bioecological perspective, such resources constitute part of the ecosystem and play a key role in supporting proximal processes between children, families, and professionals [
42]. The limited engagement with available community supports not only constrains the effectiveness of individual interventions but also risks exacerbating inequities in service access, particularly for families facing socioeconomic or long-term support barriers. International evidence emphasizes that coordinated community-level supports enhance early detection, facilitate interprofessional collaboration, and contribute to more equitable service delivery [
42,
43]. Therefore, addressing these barriers—through formalized pathways, structured collaboration mechanisms, and allocation of dedicated time for community engagement—represents a crucial step toward strengthening the systemic capacity of ECI and ensuring consistent, family-centered practices.
Additionally, community resources contribute to family support networks, both formal and informal, which are associated with greater family empowerment and engagement in early intervention services [
44]. Such support could be particularly important in assisting families and professionals to anticipate the transition process when children reach six years of age, as only 5% of participants reported planning for this stage in advance.
It is important to note that participants discussed the transition process following the end of formal legal support (six years, rather than the eight years identified by UNICEF) [
14]. However, they did not mention the need to initiate ECI. In Portugal, the process begins after birth rather than during the gestational period, as recommended internationally [
14], in order to ensure that children have access to the conditions necessary for healthy and holistic development. It is also important to note that, although all participants emphasized the importance of starting interventions as early as possible, they did not specify the exact timing. This may be explained by the perspective that professionals felt they lacked sufficient training and education in this area, which limits broader awareness of the possibilities for early intervention.
At present, compassionate communities have been widely investigated in the context of palliative care [
45,
46,
47], but they may also serve as an important resource in early childhood intervention (ECI). Compassionate communities are defined as initiatives that rely on community engagement, solidarity, and collective ownership to influence sociocultural attitudes, knowledge, behaviors, and perspectives [
45]. These communities can play a vital role in early support for children by fostering environments in which families, professionals, and community resources collaborate to promote young children’s development and well-being. Grounded in a strengths-based perspective, compassionate community approaches recognize that children and families benefit not only from formal early intervention services but also from informal support networks, including peers, neighbors, and local organizations, which provide social, emotional, and practical assistance [
45]. In this way, community engagement and mutual support could become essential components of comprehensive early support systems, reinforcing the idea that nurturing environments extend beyond clinical settings to include the broader social fabric in which families live.
4.1. Contributions to the Development of ECI
This study advances knowledge by providing empirical insights into the interplay between organizational structures, workforce characteristics, community resources, and implementation challenges. It offers both descriptive and interpretive evidence that complements existing national studies and contributes to the broader international discourse on effective ECI practices. Specifically, it identifies organizational barriers that limit the consistent implementation of family-centered practices, including high workloads, insufficient human resources, and constraints in service organization. These findings align with recent international evidence, reinforcing the need for organizational-level interventions within ECI systems to ensure quality and sustainability [
26,
27].
The study further provides applied contributions by highlighting that improvements in ECI quality depend on organizational strategies, such as workforce planning, workload monitoring, and adequate team staffing, in line with international recommendations [
9,
10,
11,
12,
13,
14,
26].
Additionally, the findings support consideration of more flexible service delivery models. International evidence indicates that tele-intervention can be effectively applied across all stages of early childhood services—from prevention and assessment to intervention—regardless of the service setting. When appropriately integrated, tele-intervention may expand access, enhance continuity of care, and improve service quality, particularly for families living in rural or remote areas with limited access to urban-based services [
35].
4.2. Study Strengths and Limitations
This study presents several strengths. The data collection instruments used were specifically developed by the research team and validated with professionals and experts in the field of early intervention, ensuring relevance and content validity. The study includes a diverse sample of professionals from various regions of Portugal, providing a broad perspective on the current challenges and needs within early intervention services. Additionally, the research team itself presents a multidisciplinary composition, bringing together expertise from different fields, which enriched the analysis despite their primary academic commitments.
Nonetheless, some limitations must be acknowledged. The sample size is not fully representative of the total number of active professionals in ELIs, as the total number of professionals involved was neither up-to-date nor shared. This recruitment method may have introduced bias in both participation and the study results, as contacting coordinators via publicly available email addresses on the SNIPI website did not guarantee that all eligible professionals received the invitation, particularly given staff turnover within the teams. Consequently, the sample may overrepresent professionals who were more accessible or engaged, limiting the generalizability of the findings.
Additionally, the voices of families, considered crucial for identifying barriers, facilitators, and specific improvement suggestions, are not represented. Although a parallel study was designed to capture family perspectives, and ELIs were invited to disseminate the survey to families and caregivers, no responses were obtained. Finally, as a descriptive study, the findings are inherently limited in terms of generalizability and causal inference. This methodological choice was deliberate, reflecting the study’s primary aim of documenting and characterizing professionals’ perspectives rather than testing hypotheses or establishing causal relationships. Despite these limitations, the study provides valuable insights into current practices and challenges, highlighting critical areas for future development, investment, and policy improvement in ECI services.
4.3. Future Contributions
Based on the findings of this study, it is recommended that SNIPI be updated to reflect current evidence and best practices. Efforts should be made to improve accessibility, equity, and standardization in early intervention services, ensuring timely and appropriate support for all children and families in need. Increasing both human and material resources is essential to reducing waiting times and enhancing the quality of interventions. The standardization of practices across teams would promote consistency and a high standard of care. In addition, investing in professional training, including specialized and continuous education for all staff, is crucial. Functional and structural restructuring of the system is also needed to improve efficiency, coordination, and service delivery. Addressing current barriers while reinforcing facilitators identified by professionals on the front line will further strengthen the system. Continuous monitoring and evaluation of these initiatives are necessary to guide ongoing improvements in early intervention services.