Volume 64, Issue 9 p. 1346-1358
Original Article

Irritability and rejection-elicited aggression in adolescents and young adults

Megan Quarmley

Corresponding Author

Megan Quarmley

Department of Psychology, Temple University, Philadelphia, PA, USA

Joint first authorship.

Correspondence

Megan Quarmley, 1701 N. 13th St., Philadelphia, PA 19122, USA; Email: [email protected]

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Athena Vafiadis

Athena Vafiadis

Department of Psychology, Temple University, Philadelphia, PA, USA

Joint first authorship.

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Johanna M. Jarcho

Johanna M. Jarcho

Department of Psychology, Temple University, Philadelphia, PA, USA

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First published: 10 April 2023
Citations: 1

Conflict of interest statement: No conflicts declared.

Abstract

Background

Violence exacts staggering personal and financial costs – a burden disproportionally born by adolescents and young adults. This may be partially due to an increased sensitivity to social rejection during this critical phase of development. Irritability, a transdiagnostic symptom, is often elicited by social interactions. Yet, little is known about age differences in social rejection-elicited aggression and irritability. Progress toward testing such relations has been hindered by a lack of ecologically-valid tasks that enable the measurement of in-the-moment social rejection-elicited aggression.

Methods

In this paper, we describe an initial study of young adults (n = 55) that demonstrates the efficacy of a novel Virtual School and Aggression Paradigm (VS-AP). Next, we replicate these results in a second study of adolescents and young adults (ages 11–25 years; n = 173) and examine relations between social rejection-elicited aggression, irritability, and age.

Results

We found that aggressive behavior in the VS-AP differed for accepting, rejecting, and unpredictable peer types (Study 1: F(2, 108) = 20.57, p < .001, ε2 = .28; Study 2: F(2, 344) = 152.13, p < .001, ε2 = .47), demonstrating that the VS-AP successfully models social rejection-elicited aggression. In Study 2, age was negatively correlated with aggressive behavior (r = −.29, p < .001) and irritability (r = −.28, p < .001), while irritability was positively correlated with aggressive behavior (r = .28, p < .001). Age moderated the relation between social rejection-elicited aggression and irritability. Specifically, irritability was more predictive of aggression in young adults than in adolescents (F(3, 167) = 7.07, p < .001).

Conclusions

Data suggest mechanisms promoting rejection-elicited aggression may differ across development and vary for those with and without high levels of irritability. The VS-AP is a promising tool for probing neurocognitive, developmental, and clinically relevant mechanisms underlying social rejection-elicited aggression.