4 years ago

Joint Effects of Peer Presence and Fatigue on Risk and Reward Processing in Late Adolescence

Laurence Steinberg, Jamie Patrianakos, Karol Silva, Jason Chein


Peers are thought to increase adolescents’ risk-taking behavior, at least in part, by heightening their sensitivity to rewards. In this study, we investigate whether the effect of peers on late adolescent males is exacerbated when youth are cognitively fatigued, a state characterized by weakened cognitive control and heightened orientation toward rewards, and well established as a factor that compromises decision making. We hypothesized that fatigued adolescents’ top-down regulation of reward-related impulses may be compromised, thereby potentially amplifying the effect of peers on reward- and risk-seeking behavior. Late adolescent males between 18 and 22 years old (mean age = 19.64, SD = 1.22; 61% Caucasian) completed a decision-making battery either alone or in the presence of 3 same-sex peers, and were either cognitively fatigued or non-fatigued. We compared behavior between four experimental groups—fatigued adolescents in a peer group, non-fatigued adolescents in a peer group, fatigued adolescents by themselves, and non-fatigued adolescents by themselves. The findings showed that cognitive fatigue and peer presence evinced independent effects on risk taking and sensitivity to rewards, but that these factors do not influence adolescent decision-making in an additive or synergistic fashion. To our surprise, being fatigued reduces (but does not eliminate) the effect of peers of risk taking. Moreover, the impact of peers on adolescent males’ ability to learn from negative consequences is not compromised when adolescents are in a state of mental fatigue. Our results suggest that mental fatigue increases late adolescent males’ reward sensitivity to the same extent as peer presence, but does not amplify the peer effect on risk-taking behavior. In this regard, grouping adolescents when they are fatigued may be less dangerous than when they are rested. Similarly, the added presence of peers does not further exacerbate the effect of fatigue on adolescent’s reward- and risk-seeking inclinations. In fact, given peers’ unique effect on adolescents’ ability to learn from costly decisions, our findings suggest that seeking the presence of peers—which is often a rewarding experience in and of itself—may be an adaptive response to mitigate the impact of fatigue on decision making.

Publisher URL: https://link.springer.com/article/10.1007/s10964-017-0690-8

DOI: 10.1007/s10964-017-0690-8

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.