📄 social_science

Psychological Capital Among University Students in an Interconnected Learning Environment: Sleep Quality, Social Media Use, Academic Stress and Social Connectedness in Higher Education

This study of 849 Nigerian university students reveals that better sleep quality and social connectedness enhance psychological capital, while academic stress and social media use diminish it, with academic stress mediating the impact of sleep and social media use moderating the benefits of social connectedness.

Original authors: Addah Temple Tamuno-Opubo, Olufemi Talabi, Joshua Eriki Osagbai, Blessing Umeh Akudo, Moshood Moses Mamudu, Chibuike Umeh

Published 2026-07-16

📖 4 min read☕ Coffee break read

CC BY 4.0

Original authors: Addah Temple Tamuno-Opubo, Olufemi Talabi, Joshua Eriki Osagbai, Blessing Umeh Akudo, Moshood Moses Mamudu, Chibuike Umeh

Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ✨ This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer

Imagine your mind as a high-performance video game character. To survive the levels of university life, this character needs a special "power-up" called Psychological Capital. Think of this power-up not as a single super-ability, but as a combo pack of four essential stats: Hope (believing you can find a way to win), Self-Efficacy (trusting you have the skills to do the job), Resilience (the ability to bounce back after getting hit), and Optimism (expecting the future to be good). Without this power-up, the grind of exams and deadlines feels impossible. But here's the twist: this power-up doesn't just appear out of thin air. It's shaped by your environment. It's like a plant; even the strongest seeds need the right soil, water, and sunlight to grow. In the modern world, that "soil" includes how well you sleep, how much stress you feel, how connected you feel to your friends, and how you use your phone. Scientists have long known that stress and sleep matter, but they are still figuring out exactly how these digital and social pieces fit together to build (or break) a student's mental strength.

This study dives into the lives of 849 university students in Nigeria to see how these different factors interact in a world where learning happens both in classrooms and online. The researchers treated Psychological Capital as the main prize they were trying to explain. They wanted to know: Does sleeping well give you more power? Does feeling stressed drain your battery? Does having friends help you level up? And, perhaps most importantly for our digital age, does scrolling through social media help you connect or just distract you from your true potential?

The team found that better sleep quality is a major booster for Psychological Capital. It's like recharging your character's battery; when students slept well, they had more hope and resilience. On the flip side, academic stress acted like a heavy weight dragging the character down. The more stressed the students felt about exams and grades, the lower their Psychological Capital dropped. Interestingly, the study showed that stress is a "middleman" in the story: when sleep is poor, stress goes up, and that extra stress is what actually eats away at the student's confidence and optimism.

The role of social connectedness was also positive but subtle. Feeling close to friends and family gave students a small but real boost to their power-up stats. However, the story gets complicated with social media. The researchers discovered that while social media might seem like a way to connect, heavy use actually acted as a "debuff" (a negative status effect). It directly lowered Psychological Capital. Even more fascinating, social media use acted like a dimmer switch on the benefits of friendship. When students used social media heavily, the positive boost they usually got from feeling connected to others was weakened. It's as if scrolling through a feed of other people's lives made the real-life support of friends feel less effective.

The study did not find that social media changed the relationship between sleep and power-up stats; sleep was good for you regardless of how much you used your phone. However, the data clearly showed that social media use did not moderate the sleep connection, meaning the sleep benefit remained steady, but the social benefit was the one that got dampened by digital overuse.

In short, the paper suggests that to build a strong, resilient student, universities and students need to look beyond just "trying harder." They need to protect sleep, manage academic pressure, and find a healthy balance with digital life. The research indicates that in our interconnected world, your mental strength isn't just an internal trait you are born with; it's a resource that grows or shrinks based on how well you manage your sleep, your stress, your real-world connections, and your screen time. The findings are based on surveys and statistical modeling, suggesting these links are real and significant, but because the study looked at a single moment in time, it suggests these relationships rather than proving a permanent cause-and-effect chain. The message is clear: to thrive, you need to tend to your digital garden just as carefully as your physical one.

Technical Summary: Psychological Capital Among University Students in an Interconnected Learning Environment

Problem Statement
In contemporary higher education, particularly within Nigerian universities, students operate in increasingly interconnected learning environments where academic demands, peer interactions, and personal identities are mediated by both physical and digital spaces. While psychological capital (PsyCap)—defined as a positive psychological state comprising hope, self-efficacy, resilience, and optimism—is recognized as a critical resource for student adaptation and persistence, existing literature often treats it as an individual trait or a matter of personal motivation. There is a significant gap in understanding how PsyCap is simultaneously shaped by institutional, social, and digital conditions. Specifically, the interplay between sleep quality, academic stress, social connectedness, and social media use in determining PsyCap among Nigerian undergraduates remains underexplored. This study addresses this gap by examining these factors within the framework of Conservation of Resources Theory, positing that sleep and social connectedness are resources, academic stress is a resource-draining condition, and social media use is a digital factor that may alter these relationships.

Methodology
The study employed a cross-sectional quantitative research design involving 849 undergraduate, postgraduate, and diploma students from Obafemi Awolowo University, Nigeria. The sample consisted of 335 females (39.5%) and 514 males (60.5%), with a mean age of 25.1 years (SD = 5.30). Participants were recruited via convenience sampling.

Data collection utilized a structured, self-administered questionnaire comprising the following validated instruments:

Psychological Capital: Measured using the Compound Psychological Capital Scale (Lorenz et al., 2016; Dudasova et al., 2021), assessing hope, optimism, resilience, and self-efficacy (Cronbach's $\alpha$ = .76).
Sleep Quality: Assessed using the Insomnia Severity Index (Bastien et al., 2001), reverse-scored so that higher values indicate better sleep quality (Cronbach's $\alpha$ = .67).
Social Connectedness: Measured via the Social Connectedness Scale-Revised (Lee & Robbins, 1995) (Cronbach's $\alpha$ = .80).
Social Media Use: Evaluated using the Social Media Use Scale (Tuck & Thompson, 2024), covering active/passive behaviors across four domains (Cronbach's $\alpha$ = .77).
Academic Stress: Measured using the Perceived Academic Stress Scale (Bedewy & Gabriel, 2015) (Cronbach's $\alpha$ = .84).

Data analysis was conducted using SPSS Version 23 and AMOS Version 23. The study utilized descriptive statistics, Pearson product-moment correlation, and Structural Equation Modelling (SEM) to test a mediation model (with academic stress as the mediator) and a moderation model (with social media use as the moderator). Model fit was evaluated using CMIN/DF, RMSEA, SRMR, GFI, CFI, and TLI indices.

Key Results
The structural equation model explained 32% of the variance in psychological capital. The analysis yielded the following findings:

Direct Effects:
- Sleep Quality: Positively predicted psychological capital ( $\beta$ = .39, $p$ = .003). Better sleep quality was associated with higher PsyCap.
- Academic Stress: Negatively predicted psychological capital ( $\beta$ = −.32, $p$ < .001). Higher stress levels were associated with lower PsyCap.
- Social Connectedness: Positively predicted psychological capital ( $\beta$ = .10, $p$ = .050).
- Social Media Use: Had a significant negative direct effect on psychological capital ( $\beta$ = −.47, $p$ < .001).
Mediation:
- Academic stress significantly mediated the relationship between sleep quality and psychological capital ( $\beta$ = .08, $p$ = .001). This indicates that better sleep quality contributes to higher PsyCap partly by reducing academic stress.
- A small but significant indirect effect was also found for social connectedness through academic stress ( $\beta$ = .001, $p$ = .020), though the authors note this effect size is minimal.
Moderation:
- Social Media Use and Sleep Quality: Social media use did not significantly moderate the relationship between sleep quality and psychological capital ( $\beta$ = .03, $p$ = .425). The positive link between sleep and PsyCap remained stable regardless of social media usage levels.
- Social Media Use and Social Connectedness: Social media use significantly moderated the relationship between social connectedness and psychological capital ( $\beta$ = −.12, $p$ = .003). Specifically, high levels of social media use weakened the positive association between social connectedness and PsyCap. In other words, the psychological benefits of feeling socially connected are diminished when social media use is excessive.

Significance and Claims
The paper claims to reframe psychological capital not merely as an individual trait but as a student capacity shaped by the broader ecology of interconnected higher education environments. The study asserts that in digitally active student populations, psychological resources are contingent upon institutional, social, and digital conditions.

The authors argue that universities cannot rely solely on individual counseling or motivational programs to foster student wellbeing. Instead, they must address the systemic interaction of sleep health, academic workload, social belonging, and digital-life balance. The findings suggest that while social connectedness is vital, its positive impact on psychological capital is vulnerable to the negative effects of excessive social media use. Consequently, the paper advocates for integrated institutional policies that promote sleep hygiene, reduce academic stress through structural changes (e.g., assessment design), foster genuine social connectedness, and support digital-life balance. The study positions these interventions as essential for "sustainable higher education," where student success is measured not only by academic output but by the preservation of psychological wellbeing.

Limitations
The authors acknowledge that the cross-sectional design precludes causal inferences, necessitating longitudinal studies to verify the directionality of relationships. Additionally, the reliance on self-reported data introduces potential biases, and the use of convenience sampling from a single Nigerian university limits the generalizability of the findings. Future research is recommended to include objective indicators (e.g., sleep tracking) and diverse institutional contexts.

Technical Summary: Psychological Capital Among University Students in an Interconnected Learning Environment

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