Narcissism, overconfidence, and risk seeking are all positively correlated in U.S. samples. Overconfidence and risk seeking show consistent cross-cultural variation with higher averages among Chinese samples than U.S. samples, whereas the prior literature is mixed with regard to narcissism. These variables have never been studied simultaneously across U.S. and Chinese cultures. In two studies, we investigated within-cultural and cross-cultural variability in narcissism, overconfidence, and risk taking between college students from comparable universities in the United States and China. In both studies and in both nations, all three variables correlated positively with each other when questions were asked about one’s own country. Individuals from China were more overconfident and risk seeking. Individuals from the United States displayed greater narcissism scores, but standard indexes of scale invariance were inadequate, rendering cross-cultural comparisons of narcissism itself infeasible. In Study 2, independent self-construal explained cross-cultural differences in narcissism scores, supporting the argument that cultural differences in viewing oneself as autonomous and separate from society are responsible for differences in narcissism scores across cultures. Parallel analyses with regard to overconfidence and risk taking were non-significant. Taken together, although narcissism, overconfidence, and risk taking tend to co-occur within cultures, the present cross-cultural analyses demonstrate that they may arise through different mechanisms. Independent self-construal may account for narcissism effects, but the explanations for overconfidence and risk taking remain speculative.

Personalized normative feedback is a recommended component of alcohol interventions targeting college students. However, normative data are commonly collected through campus-based surveys, not through actual participant-referent relationships. In the present investigation, we examined how misperceptions of residence hall peers, both overall using a global question and those designated as important peers using person-specific questions, were related to students’ personal drinking behaviors. Participants were 108 students (88% freshman, 54% White, 51% female) residing in a single campus residence hall. Participants completed an online baseline survey in which they reported their own alcohol use and perceptions of peer alcohol use using both an individual peer network measure and a global peer perception measure of their residential peers. We employed network autocorrelation models, which account for the inherent correlation between observations, to test hypotheses. Overall, participants accurately perceived the drinking of nominated friends but overestimated the drinking of residential peers. Consistent with hypotheses, overestimating nominated friend and global residential peer drinking predicted higher personal drinking, although perception of nominated peers was a stronger predictor. Interaction analyses showed that the relationship between global misperception and participant self-reported drinking was significant for heavy drinkers, but not non-heavy drinkers. The current findings explicate how student perceptions of peer drinking within an established social network influence drinking behaviors, which may be used to enhance the effectiveness of normative feedback interventions.

The COVID-19 pandemic is a major stressor that has negatively impacted global mental health. Many U.S. college students faced an abrupt transition to remote learning in March 2020 that significantly disrupted their routines, likely causing changes in mental health. The current study examined changes in anxiety and depressive symptoms among 990 college students, from before COVID-19 had reached U.S. community spread to 5 months into the pandemic. Results indicate overall increases in anxiety and depressive symptoms; this effect was amplified as more COVID-related challenges with academic impact and loneliness were reported. Increases in anxiety and depression were buffered as a function of greater perceived positive changes attributed to COVID-19; the differences in anxiety and depressive symptoms over time were also lessened when greater perceived stress prior to COVID-19 was reported. Findings reveal an unexpected effect involving pre-pandemic stress, and highlight potential targets to promote resilience, which should be examined long-term.

This study considered the influence of misperceptions of typical versus self-identified important peers’ heavy drinking on personal heavy drinking intentions and frequency utilizing data from a complete social network of college students. The study sample included data from 1,313 students (44% male, 57% White, 15% Hispanic/Latinx) collected during the fall and spring semesters of their freshman year. Students provided perceived heavy drinking frequency for a typical student peer and up to 10 identified important peers. Personal past-month heavy drinking frequency was assessed for all participants at both time points. By comparing actual with perceived heavy drinking frequencies, measures of misperceptions of heavy drinking (accurately estimate, overestimate, underestimate) were constructed for both general and important peers. These misperceptions were then used as predictors of concurrent and prospective personal heavy drinking frequency and intentions using network autocorrelation analyses. The majority of students (84.8%) overestimated, 11.3% accurately estimated, and 3.9% underestimated heavy drinking among their general peers, whereas 42.0% accurately estimated, 36.9% overestimated, and 21.1% underestimated important peers’ heavy drinking. For both referents, overestimation of peer heavy drinking was associated with more frequent heavy drinking and higher drinking intentions at both time points. Importantly, the effects of underestimating and overestimating close peers’ drinking on personal alcohol use were significant after controlling for the influence of misperceptions of general peers’ heavy drinking. Close peers are a critical referent group in assessments related to social norms for young adult alcohol use. Implications for prevention and intervention are discussed.

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Individuals with the greatest risk of initiation of vaping cannabis during the first year of college are those with a prior history of other cannabis use and ENDS use and who have peers in their network who initiate cannabis vaping.

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This study provides strong evidence that perceiving that close peers drink heavily is particularly risk-enhancing for anxious and depressed college students, and offers implications about alcohol intervention targeted at these subgroups.