The onset of puberty: Effects on the psychophysiology of defensive and appetitive motivation / Karina M. QUEVEDO in Development and Psychopathology, 21-1 (January 2009)  

Public ISBD [article]  inDevelopment and Psychopathology > 21-1 (January 2009) . - p.27-45 Titre : The onset of puberty: Effects on the psychophysiology of defensive and appetitive motivation Type de document : Texte imprimé et/ou numérique Auteurs : Karina M. QUEVEDO, Auteur ; Megan R. GUNNAR, Auteur ; Ronald E. DAHL, Auteur ; Stephen D. BENNING, Auteur Année de publication : 2009 Article en page(s) : p.27-45 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : We examined puberty-specific effects on affect-related behavior and on 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 collected 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 × 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 did 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. En ligne : http://dx.doi.org/10.1017/s0954579409000030 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=680 [article] The onset of puberty: Effects on the psychophysiology of defensive and appetitive motivation [Texte imprimé et/ou numérique] / Karina M. QUEVEDO, Auteur ; Megan R. GUNNAR, Auteur ; Ronald E. DAHL, Auteur ; Stephen D. BENNING, Auteur . - 2009 . - p.27-45. Langues : Anglais (eng) in Development and Psychopathology > 21-1 (January 2009) . - p.27-45 Index. décimale : PER Périodiques Résumé : We examined puberty-specific effects on affect-related behavior and on 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 collected 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 × 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 did 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. En ligne : http://dx.doi.org/10.1017/s0954579409000030 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=680

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