1. Introduction
The emergent situation due to the COVID-19 pandemic exhibited the necessity of social media and digital skills. People in quarantine need to use digital technologies (including social media) in order to communicate, work, shop, learn, be informed, socialize, have fun, and live their lives in general. For example, in the USA, about one third of adults had an online socializing event with friends or family and one third of adults ordered food online from a local restaurant during COVID-19 [
1]. Similarly, there was a 35% increase in using social media [
2].
It is well known that social media give people opportunities for communication [
3]; sharing information, experiences, knowledge, and emotions [
4,
5]; learning [
6,
7]; building relationships [
8,
9]; reputation management [
10,
11,
12]; public participation and active citizenship [
13,
14,
15]; and emergency and crisis management [
16,
17,
18], among others. However, users of social media also face risks such as fake news and disinformation [
15,
19,
20,
21,
22], polarization [
23,
24,
25], bullying and harassment [
26,
27], and addiction [
28,
29], among others.
As of October 2020, there were over 4.5 billion active Internet users and over 4 billion active social media users worldwide. Specifically, there were more than 2.7 billion Facebook users, 2 billion YouTube users, 2 billion WhatsApp users, 1 billion Instagram users, 0.4 billion Pinterest users, and 0.3 billion Twitter users worldwide [
30]. In Europe, over half of adults and 86% of young people 16 to 24 years old participated in social networks. According to Datareportal [
31], on average Internet users spent from 1.3 h (in Japan, Germany, and France) to 4.5 h (in Brazil) on social media daily. They spent daily about 5 h on the Internet, of which about 1.5–2.0 h were on social media. On average worldwide, people spent over 2 h on social media daily [
30].
However, even if someone uses social media intensively, that does not imply that he/she also has high digital skills. In Europe, Internet users correspond to 85% of all individuals 16 to 74 years old, and 97% of all individuals 16 to 25 years old. Among these Internet users, 65% use social media; 81% listen to music, play games, and watch videos; 66% do Internet banking (66%); and 71% e-shop. However, over 42% of Europeans between 16 and 74 years old do not have basic digital skills, and 40% of companies have difficulties recruiting ICT specialists [
32]. Actually, only 58% of Europeans have at least basic digital skills and 33% of Europeans have above basic digital skills.
As society and economy increasingly depend on digital technologies, they need to develop citizens and labor forces with digital skills [
33]. Changes in all societal areas such as life (e.g., digital communication, entertainment, shopping, banking), education (e.g., online courses, digital school, digital educational resources, digital research), citizenship (participation, e-government), health (e.g., digital health), work/employment, business (e-entrepreneurship, digital marketing, e-commerce, digital business), etc., have brought up the need for all people to have digital skills. Digital technologies are used in all economic sectors, such as finance, commerce, construction, industry, energy, utilities, transportation, safety, healthcare, education, housing, agriculture, etc. It is estimated that 90% of jobs will require digital skills [
34]. The connection between digital skills and employment has been documented by various studies [
34,
35,
36,
37]. Thus, the European Council Recommendation [
38], the European Commission’s Digital Education Action Plan [
39], the Berlin Declaration [
40], and the Digital Skills and Jobs Coalition [
41] aim at developing the digital skills of students, citizens, and workers.
However, it is not universally accepted what digital skills comprises [
42,
43]. The European Training Foundation [
44] and the European Council Recommendation [
38] defined basic digital skills to include information and data literacy, online communication and collaboration, digital content creation, safety, intellectual property issues, and problem solving. So, an individual with basic digital skills can retrieve, assess, store, produce, present, and exchange information, and communicate and participate in collaborative virtual networks and social media using digital technologies. The DigComp 2.x framework [
45,
46] describes digital competence across five areas: (i) information and data literacy, (ii) communication and collaboration, (iii) digital content creation, (iv) safety, and (v) problem solving. UNESCO [
33] describes digital skills on three levels: (i) basic functional digital skills to use digital devices and access information and resources; (ii) generic digital skills including information literacy, communication and collaboration, digital content creation, digital safety, and digital rights; and (iii) higher-level skills including computer programming (coding) and computational thinking. Furthermore, the European Union Framework of Digital Competence of Educators—DigCompEdu [
47]—has been applied by several researchers [
48] on the teacher populations since their digital competences are essential to guarantee the efficient transition of knowledge to their students and encourage teaching and learning innovation [
49].
Although there is a lot of research both on social media use and on digital skills, as shown above, there is limited research investigating their interrelationships. Most previous studies investigate the effect of social media use on students’ academic performance. Lambić [
50] found a positive correlation between students’ academic performance and their frequency of Facebook use for educational purposes but no correlation for general-purpose use. Similarly, Al-Rahmi [
51] found that social media use by students positively affected their learning performance. However, Liu [
52] found a significant negative relationship between the use of social media and academic performance. Similarly, other studies found that high social media use deteriorates students’ academic performance [
53,
54,
55]. More specifically, Wakefield [
56] found that increasing Facebook use decreases the performance of lower academic achievers across the least difficult levels of learning performance, but does not have a significant effect on higher academic achievers.
Correspondingly, when investigating the relationship of Facebook use and educational level, Van Deursen [
57] found that people with low levels of education were using the Internet for more hours daily in their spare time than higher educated and employed people. Similarly, Correa [
58] found that lower educated young people tended to use Facebook more frequently. She also found that digital skills were not related to the frequency of Facebook use. However, according to Pew Research Center [
1], the more educated the person, the more they tend to use social media. More adults with a college degree or more (74%) use Facebook than those with a high school diploma or less (61%). Finally, Castillo de Mesa [
59] investigated the moderating effect of digital skills on the relationship between closeness and resilience in a Facebook group. They found that participants’ cohesion increased their resilience capacity when digital skills were high.
Motivated by the above-mentioned research gaps, this paper will investigate the following three main research questions (RQ):
RQ1: Are there any significant correlations between social media use and digital skills?
RQ2: Are there any significant differentiations in social media use according to students’ gender, age, grade, and educational level?
RQ3: Are there any significant differentiations in digital skills according to students’ gender, age, grade, and educational level?
In this research, the term “digital skills” is described by six components reflecting the students’ digital skills to (1) Communicate, Collaborate, Share; (2) Search, Find, Access; (3) Store, Manage, Delete; (4) Evaluate; (5) Protect; and (6) Develop, Apply, Modify, as presented in Perifanou [
60,
61]. The term “social media use” is defined by the frequency (hours per week) of students’ use of three popular social media networks: Instagram, Facebook, and YouTube. This study aims to investigate the bivariate correlations between each network and the students’ digital skills components.
4. Discussion and Implications
This research study revealed several interesting findings about the role of popular social media networks (in terms of frequency use) and the students’ digital skills across six digital skills components. Furthermore, some remarkable outcomes emerged in terms of group-based differences according to the students’ gender, age, and educational level.
As shown in
Table 4, the students expressed high levels of digital skills in most of the examined components, implying that they are quite confident to Communicate, Collaborate, Share; Search, Find, Access; Store, Manage, Delete; Evaluate; and Protect using digital technologies. These findings are in accordance with recent evidence [
64] supporting that young Greeks have at least basic digital skills. However, our findings suggest that young Greeks need to be further qualified in terms of development skills (Develop, Apply, Modify). In fact, developing skills were characterized as “advanced digital skills” by Cedefop [
67], and hence, Cedefop suggests designing enhanced strategies to allow citizens access to further training since “advanced digital skills, in particular programming and coding, will become a key prerequisite for entry into many jobs” (as cited in Cedefop [
67].
Next, we discuss the specific findings for the stated research objectives.
RQ1: Are there any significant correlations between social media use and digital skills?
Our findings revealed significant correlations between social media use and digital skills only for the YouTube network. Facebook and Instagram use did not show any relationship with the students’ digital skills. This finding is in accordance with previous studies like Correa [
58], who found that digital skills are not related to the frequency of Facebook use. As already stated, there are not many studies exploring this relationship since most previous studies targeted the relationship between Facebook use and students’ academic achievement.
The reason that YouTube is linked (in this study) to students’ digital skills might be explained by that social network’s characteristics compared those of Facebook or Instagram. As explained in Bhatia [
68], YouTube has emerged as an informal learning environment where users can access a huge dataset of video tutorials and how-to-related material. Researchers have pointed out that university students tend to visit YouTube regularly to learn how to solve specific problems [
69]. In previous years, YouTube was recognized as a significant source of educative material for several study disciplines, especially nursing and medicine [
70]. Today, researchers agree that YouTube is a rich source of online educational videos that effectively affect students’ learning [
71].
So, all the above imply that students tend to use YouTube to seek information (either on educational content or otherwise), which can positively affect their learning. Therefore, this seems to be the main reason why YouTube is positively associated with students’ digital skills. Interestingly, in this study the frequency of YouTube use was positively associated with the digital skills of Evaluate and Protect, implying that the higher the frequency of watching YouTube videos the higher the students’ skills and efficiency in identifying trusted and non-trusted web content, malicious attacks, or fake information and protecting themselves. A reasonable explanation might be Europe’s recent attempts on cybersecurity awareness [
72] or the recent era of the #MeToo movement and online harassment [
73], which may motivate individuals to seek relevant information in the YouTube databases.
RQ2: Are there any significant differentiations in social media use according to students’ gender, age, grade, and educational level?
Both gender and age revealed significant differences in the frequency of Instagram use, but not of Facebook or YouTube. Regarding gender, female students expressed higher values of Instagram use compared to male students. This result aligns well with Statista’s [
74] recent findings that there are more female Instagram users than male ones. Previous research has also proven gender differences in online activities and social media preferences [
75,
76,
77]; however, females’ favored medium was not stated. As explained in Van Deursen [
57], women use social media for communication, text messaging, and video calls more often than men. On the other hand, authors have shown that male users access social media mainly to seek information and read news, make commercial transactions, for entertainment reasons, or for personal development. All the above do not clearly explain the significant difference between Instagram and Facebook, since they share the main core characteristics compared to YouTube (or other networks, e.g., Twitter). We believe it is the network’s photo-centric characteristics that might render it more favorable to the female population. However, it might be the combination of gender and age that rendered this outcome. According to Statista [
78], as of January 2021 most Instagram users were young females (18–34). This is also confirmed by the age-related results of our study that demonstrated that the youngest groups expressed significantly higher values in the frequency of Instagram use. However, by examining our sample characteristics we observed that there were more young females in the groups of 18–24 and 25–35 years old than young males. Therefore, we suggest future research to re-examine the statistical significance of gender differences in the frequency of Instagram use.
Contrary to previous findings showing that academic or learning performance is related to the frequency of social media use [
51,
52,
53,
54,
55], our research revealed no effect of students’ average grade. Our finding can be explained by the fact that we measured the students’ generic use of social media without trying to identify their learning-related activities on social media. According to the findings of Lambić [
50], a correlation between students’ academic performance and their frequency of Facebook use was detected only in their use for educational purposes and not in general.
The increased frequency of Facebook use that was observed in postgraduate students aligns well with the previous study by Pew Research Center [
1], who found out that adults with a college degree or more use Facebook more frequently than those with a high school diploma. However, more research needs to be done since our study was focused on undergraduate and postgraduate students and not on the generic population.
RQ3: Are there any significant differentiations in digital skills according to students’ gender, age, grade, and educational level?
No gender- or grade-related differences were detected in the measured digital skills components. Age revealed significant group differences in two components (PR and DAM), and educational level revealed significant group differences in four (CCS, EV, PR, and DAM) out of six components.
Contrary to previous studies [
79], this study did not detect any gender gap in the students’ digital skills, since both female and male students expressed relatively equal mean scores even in advanced digital skills like developing (DAM). These findings are encouraging for the future of the gender gap elimination in computing; however, further research should be conducted due to the current participants’ characteristics. For example, the overall descriptive statistics (
Table 4) revealed a lower level of developing skills for the whole sample. This might suggest that other factors should be considered, such as, for instance, the participants’ field of study of prior experience in developing tasks.
As regards age, we observed that the youngest group of 18–24 years old revealed the lowest score in protection skills (PR), whereas the group of 24–35 years old revealed the highest ones both in PR and in DAM.
The educational-level difference in four digital skills components can possibly be explained by the fact that students in postgraduate programs have greater knowledge and practical experience in technology and hence express higher values of digital skills. However, this could vary according to the study field and prior experience; hence, further research is suggested.
5. Research Implications and Limitations
A first implication of this work is that students and instructors would be further motivated to use YouTube for educational reasons since it is positively associated with digital skills components. As suggested in previous research [
71], students and educators should carefully evaluate the quality of YouTube videos to be used as educational material and educators should carefully check for the quality of the videos before suggesting them as supplementary learning materials.
A second implication is the adoption of Facebook and Instagram in the educational context as well. Since students tend to engage strongly and spend a lot of time on those networks as well, educators could encourage their students to enhance their knowledge on the course topics through those networks. For example, educators can cultivate a connectivity approach in learning by assigning students to Facebook groups or asking them to create content and upload photo-based material to Instagram, especially for complex educational concepts that are better explained through visualized representations (e.g., in medicine courses [
80]). Moreover, Instagram can be used by students and educators to share useful information and build trusted communities where affective support is also provided. Researchers [
81] have already suggested that the visual-centric nature of Instagram renders it a platform that invites personal disclosure and generates feelings of connectedness. Moreover, the significant difference in gender preferences implies that gender-oriented and personalized approaches could be implemented. For instance, young female students could be encouraged by educators to participate more in Instagram-related activities, since that platform seems to engage them more than others (Facebook).
Another implication is the need for cybersecurity awareness and protection practices among young students (18–24 years old). Young students should be more informed on how to protect themselves online, for example, by frequently changing their password, keeping their transactions secure, and being well-informed about protection strategies against bulling and harassment in social media.
Last, the age- and educational level-related differences in developing digital skills should be further considered so educators and educational institutions can design policies and practices to shrink the gaps and provide those groups of students with further training and support to enhance their digital skills.
This research has some limitations. First, the survey was based on self-reported feedback and not on actual measures, so there might be critical differentiations in the frequency of social media use expressed by the students. Another limitation relates to generalizability and the student population. All the participants were attending Greek universities and did not differ significantly in terms of educational background. Finally, the sample size was quite small, and which could have led to some bias in the results.
6. Conclusions and Future Research
Although there is rich literature on the use of social media among young adults and on their digital skills, no research evidence exists on the relationships between those constructs. To this end, we examined the relationship between the frequency use of three popular social media networks (Instagram, Facebook, and YouTube) and students’ digital skills, as well as their group-based differences according to their gender, age, grade, and educational level.
In this study we measured students’ digital skills in accordance with six digital skills components as derived from recent literature. Our findings revealed a set of significant findings, especially on the role of YouTube. A strong positive correlation was found between the frequency of YouTube use and students’ digital skills regarding their evaluation and protection skills. This finding raised several concerns regarding the adoption and use of YouTube as a formal educational channel in higher education.
Another interesting finding was the gender and age-related differences that were observed in the frequency of Instagram use as well as the age-related differences observed in two digital skills components. Although the students’ grades did not reveal any significant outcome, the educational level (undergraduate/postgraduate) yielded several significant differentiations in the digital skills components as well as in the frequency of Facebook use.
The findings of this study have some limitations, and hence future research should be conducted. For instance, despite the generalizability limitation, these findings could contribute to specific trends in population groups, and hence more studies should be conducted to compare the results in different populations. Moreover, our findings can be extended by future research that will investigate older adults’ social media use and digital skills as well as the inequalities with respect to Internet-access infrastructure and use of different social media networks (e.g., TikTok, Snapchat, LinkedIn, Twitter, Pinterest).
Overall, our findings seek to contribute to the deeper understanding of the differentiations and links between social media used and digital skills in university students.