Journal
DEVELOPMENT AND PSYCHOPATHOLOGY
Volume 21, Issue 1, Pages 27-45Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0954579409000030
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Funding
- NIDA NIH HHS [R01 DA018910-01, R01 DA018910] Funding Source: Medline
- NIMH NIH HHS [T32 MH015755-25, T32 MH15755, K05 MH066208, T32 MH015755, K05 MH66208, K05 MH066208-01] Funding Source: Medline
- NATIONAL INSTITUTE OF MENTAL HEALTH [K05MH066208, T32MH015755] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE ON DRUG ABUSE [R01DA018910] Funding Source: NIH RePORTER
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We examined puberty-specific effects oil affect-related behavior and oil the psychophysiology of defensive and appetitive motivation while controlling for age. Adolescents (N = 94, ages = 12 and 13 years) viewed 75 pictures (International Affective Picture System: pleasant, neutral, and aversive) while listening to auditory probes. Startle response and postauricular (PA) reflex were colleted as measures of defensive and appetitive motivation, respectively. Pubertal status and measures of anxiety/stress reaction and sensation/thrill seeking were obtained. Mid-/late pubertal adolescents showed enhanced startle amplitude across all picture valences. A Puberty x Valence interaction revealed that mid-/late pubertal adolescents showed appetitive potentiation of the PA, whereas pre-/early pubertal adolescents showed no modulation of the PA reflex. Mid-/late pubertal adolescents also scored significantly higher on measures of sensation/thrill seeking than (lid their pre-/early pubertal peers and puberty moderated the association between psychophysiology and behavioral measures, suggesting that it plays a role in reorganizing defensive and appetitive motivational systems.
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