A Moderated Mediation Model to Predict Adolescent Resistance to Peer Influence: Evidence From an Adoption Study.

Area of Science:

• Developmental Psychology
• Behavioral Genetics
• Adolescent Health

Background:

• Adolescents are susceptible to peer influence, increasing risks for problematic behaviors.
• Individual differences in resistance to peer influence (RPI) are significant but not fully understood.
• Genetic and contextual factors shaping RPI development require further investigation.

Purpose of the Study:

• To investigate the mediating roles of child impulsivity and self-esteem in the relationship between genetic predispositions and adolescent RPI.
• To examine the moderating effects of adoptive parent responsiveness on these pathways.
• To understand the developmental trajectory of RPI from early to middle adolescence.

Main Methods:

• Utilized an adopted-at-birth family triad design with 552 families.
• Analyzed data on genetic risk for impulsivity and self-esteem, child phenotypic impulsivity and self-esteem, and adoptive parent responsiveness.
• Employed moderated mediation models to assess pathways for early (age 11) and middle (ages 13-15) adolescent RPI.

Main Results:

• Birth parent self-esteem positively predicted adolescent RPI, mediated by child self-esteem.
• Child self-esteem emerged as a significant mediator in the pathway from genetic factors to RPI.
• Resistance to peer influence demonstrated moderate stability from early to middle adolescence.

Conclusions:

• Nurturing children's self-esteem is crucial for enhancing their ability to resist peer pressure.
• These findings underscore the interplay between genetic and environmental factors in shaping adolescent RPI.
• Interventions aimed at boosting self-esteem may improve adolescent resilience to negative peer influences.