Temporal Dynamics of Positive and Negative Affect in Adolescents: Associations with Depressive Disorders and Risk.

Alterations in dynamic affective processes are associated with dysregulated affect and depression. Although depression is often associated with heightened inertia (i.e., greater moment-to-moment correlation) and variability (i.e., larger departures from typical levels) of affect in adults, less is known about whether altered affect dynamics are present in youth at risk for depression. This study investigated the association of clinical depression and depression risk with the inertia and variability of positive and negative affect in a sample of youth at varying risk for depression. Our sample included 147 adolescents aged 14 to 17, categorized into three groups: never-depressed lower-risk, never-depressed higher-risk (based on maternal history of depression), and currently depressed adolescents. Adolescents completed ecological momentary assessments of positive and negative affect up to seven times per day for a week. Multilevel models and ANOVAs were used to examine associations of affective inertia and variability with adolescent depression and risk based on maternal history, controlling for average affect. Depressed adolescents showed more inert and diminished positive affect, and more variable and elevated negative affect compared to lower- and higher-risk youth, though associations attenuated after controlling for average affect. No differences were identified between never-depressed higher-risk and lower-risk youth. Additional longitudinal studies are needed to evaluate whether altered affect dynamics in daily life precede depression onset to understand their utility for developing preventive interventions.

Social Media Use as a Predictor of Positive and Negative Affect: An Ecological Momentary Assessment Study of Adolescents with and without Clinical Depression.

Social media use is common in adolescents, with implications for psychosocial development and the emergence of depression. Yet, little is known about the time-linked connections between social media use and adolescents' affective experiences and how they may differ between depressed and non-depressed youth. We leveraged ecological momentary assessment in adolescents oversampled for current depression to examine (1) associations between social media use and concurrent and later positive and negative affect and (2) sex and presence of a depressive disorder as moderators of these associations. Adolescents aged 14-17 with (n = 48) and without (n = 97) clinical depression, as indicated via clinical interview, reported momentary social media use and positive and negative affect seven times per day for one week. Multilevel modeling indicated that social media use was associated with reduced positive affect both concurrently and at the next assessment. Further, among clinically depressed youth only, social media use was associated with reduced negative affect at the next assessment. Results suggest that social media use may reduce both positive and negative affect, highlighting the nuanced relation between adolescent social media use and emotional health and laying the groundwork for future research to address several open questions.

Age-related differences in social media use, online social support, and depressive symptoms in adolescents and emerging adults.

BACKGROUND: Despite growing concerns about the impact of social media use on the developing brain and associated mental health impacts, whether susceptibility to the benefits and harms of social media use changes across adolescence and young adulthood has yet to be empirically tested. METHOD: Using a cross-sectional sample of participants aged 14-22 years (N = 254), we examined (a) linear and non-linear age-related changes in social media use and online social support and (b) age-related differences in the effects of social media use and online social support on depressive symptoms. RESULTS: We found age differences in social media use, but not online social support, such that social media use increased across adolescence and peaked around age 20, followed by stable use into young adulthood. Age moderated the effect of online social support, but not overall social media use, on depressive symptoms, such that online social support was negatively associated with depressive symptoms for adolescents (age < 16.98), but the opposite pattern emerged for young adults (age > 19.04). CONCLUSIONS: Results suggest overall developmental changes in social media use and that adolescents may be more susceptible than emerging adults to the beneficial effects of positive online interactions on mental health.

#socialdistancing: Social Media Use and Online Social Support Moderate the Effect of Pandemic-Related Stress on Internalizing Symptoms in Emerging Adults.

Introduction: The COVID-19 pandemic has led to major stressors, increases in internalizing symptomatology, and greater reliance on online interactions. We examined associations between social media use, online social support, pandemic-related stress, and internalizing symptoms, and tested the moderating role of social media use on the relation between stress and symptom change across time. Methods: Emerging adults aged 18-25 (N=200) self-reported pandemic-related stress, internalizing symptoms, social media use, and online social support in May 2020, then repeated measures of internalizing symptoms in August 2020. Results: Greater social media use was cross-sectionally associated with greater stress and anxiety symptoms. High social media use in conjunction with high interpersonal stress was predictive of increases in depression, whereas low online social support and high total stress was predictive of increases in anxiety. Discussion: Findings suggest that general social media usage and online social support are differentially related to internalizing symptom change among emerging adults.

Development of emotion processing and regulation: Insights from event-related potentials and implications for internalizing disorders.

Emotionally-salient stimuli receive selective attention and elicit complex neural responses that evolve considerably across development. Event-related potentials (ERPs) optimally capture the dynamics of emotion processing and regulation, with sensitivity to detect changes in magnitude, latency, and maximal location across development. In this selective qualitative review, we summarize evidence of developmental changes in neural reactivity to emotional stimuli and modulation of neural responses during emotion regulation indexed by ERPs across infancy, childhood, and adolescence. The cumulative ERP literature suggests the transition from childhood to adulthood is characterized by a gradual decrease in neural reactivity to emotional stimuli and increased efficiency in attentional allocation towards emotional stimuli. Some studies show sensitivity to emotional stimuli peaks in adolescence, but the evidence is mixed. While both early (<300 ms) and late (>300 ms) ERPs demonstrate sensitivity to emotional stimuli, emotional modulation is more consistently observed in relatively later ERPs across development. The literature additionally shows improvements in regulation abilities across development, though ERP research on developmental changes in emotion regulation is still relatively limited, highlighting a critical direction for future research. Finally, we briefly discuss changes in emotion-related ERPs relevant to the emergence of depression and anxiety. Findings from this review indicate that ERPs provide abundant information about the development of emotion processing and regulation, with potential clinical utility for detecting early-emerging vulnerabilities for internalizing forms of psychopathology.

#nomakeupselfie: The impact of natural no-makeup images and positive appearance comments on young women's body image.

Presenting no-makeup selfies interspersed with idealized made-up images may be beneficial for women's body image. However, the impact of viewing only no-makeup selfies is still unknown, as is the influence of any positive appearance-related comments from others accompanying those images on social media. Thus, in the present study, we examined the impact of viewing either: (1) idealized images with appearance-related comments, (2) idealized images with appearance-neutral comments, (3) no-makeup images with appearance-related comments, or (4) no-makeup images with appearance-neutral comments, on young women's (N = 394) appearance satisfaction, mood, appearance comparison frequency, and perceived attainability. Viewing idealized selfies of attractive women reduced women's satisfaction with their overall and facial appearance. Viewing natural no-makeup images of those attractive women also reduced women's facial satisfaction but had no impact on overall appearance satisfaction. No-makeup selfies resulted in less frequent appearance comparisons and higher perceived attainability than idealized images. There was no impact of appearance-related comments on any of the outcomes. The results suggest that no-makeup images are less detrimental to young women's body image than idealized images.