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Peer Influence Via Instagram: Effects on Brain and Behavior in Adolescence and Young Adulthood

Lauren E. Sherman · Patricia M. Greenfield · Leanna M. Hernandez · Mirella Dapretto

196 citations0/0 files storedChild Development

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Impact of Technology on Adolescents Neurotransmitter Receptor Influence on Behavior Neural and Behavioral Psychology Studies

Abstract

Mobile social media often feature the ability to "Like" content posted by others. This study examined the effect of Likes on youths' neural and behavioral responses to photographs. High school and college students (N = 61, ages 13-21) viewed theirs and others' Instagram photographs while undergoing functional Magnetic Resonance Imaging (fMRI). Participants more often Liked photographs that appeared to have received many (vs. few) Likes. Popular photographs elicited greater activity in multiple brain regions, including the nucleus accumbens (NAcc), a hub of the brain's reward circuitry. NAcc responsivity increased with age for high school but not college students. When viewing images depicting risk-taking (vs. nonrisky photographs), high school students, but not college students, showed decreased activation of neural regions implicated in cognitive control.

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References

2000Emerging adulthood: A theory of development from the late teens through the twenties.2006Self-referential processing in our brain—A meta-analysis of imaging studies on the self 2007Age differences in resistance to peer influence.2008Influence: science and practice 2015Teens, Social Media & Technology Overview 2015 2016The Power of the Like in Adolescence 2012Friending, IMing, and hanging out face-to-face: Overlap in adolescents' online and offline social networks.2006Peer Contagion of Aggression and Health Risk Behavior Among Adolescent Males: An Experimental Investigation of Effects on Public Conduct and Private Attitudes

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2020Examining the links between active Facebook use, received likes, self-esteem and happiness: A study using objective social media data 2020Follow or be followed: Exploring the links between Instagram popularity, social media addiction, cyber victimization, and subjective happiness in Italian adolescents 2023Social Media and Youth Mental Health 2019Self-disclosure during adolescence: exploring the means, targets, and types of personal exchanges

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