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Longitudinal examination of infant baseline and reactivity cortisol from ages 7 to 16 months.
Dev Psychobiol. 2015 Apr; 57(3):356-64.DP

Abstract

This study characterized the longitudinal evolution of HPA axis functioning from 7 to 16 months of age and identified individual and environmental factors that shape changes in HPA axis functioning over time. Participants were 167 mother-infant dyads drawn from a larger longitudinal study, recruited based on maternal history of being maltreated during childhood. Salivary cortisol levels were assessed before and after age-appropriate psychosocial stressors when infants were 7 and 16 months old. Maternal observed parenting and maternal reports of infant and environmental characteristics were obtained at 7 months and evaluated as predictors of changes in infant baseline cortisol and reactivity from 7 to 16 months. Results revealed that infants did not show a cortisol response at 7 months, but reactivity to psychosocial stress emerged by 16 months. Individual differences in cortisol baseline and reactivity levels over time were related to infant sex and maternal overcontrolling behaviors, underscoring the malleable and socially informed nature of early HPA axis functioning. Findings can inform prevention and intervention efforts to promote healthy stress regulation during infancy.

Authors+Show Affiliations

Department of Psychology, DePaul University, Chicago, IL.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

25783617

Citation

Martinez-Torteya, Cecilia, et al. "Longitudinal Examination of Infant Baseline and Reactivity Cortisol From Ages 7 to 16 Months." Developmental Psychobiology, vol. 57, no. 3, 2015, pp. 356-64.
Martinez-Torteya C, Muzik M, McGinnis EW, et al. Longitudinal examination of infant baseline and reactivity cortisol from ages 7 to 16 months. Dev Psychobiol. 2015;57(3):356-64.
Martinez-Torteya, C., Muzik, M., McGinnis, E. W., Rosenblum, K. L., Bocknek, E. L., Beeghly, M., DeCator, D., & Abelson, J. L. (2015). Longitudinal examination of infant baseline and reactivity cortisol from ages 7 to 16 months. Developmental Psychobiology, 57(3), 356-64. https://doi.org/10.1002/dev.21296
Martinez-Torteya C, et al. Longitudinal Examination of Infant Baseline and Reactivity Cortisol From Ages 7 to 16 Months. Dev Psychobiol. 2015;57(3):356-64. PubMed PMID: 25783617.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Longitudinal examination of infant baseline and reactivity cortisol from ages 7 to 16 months. AU - Martinez-Torteya,Cecilia, AU - Muzik,Maria, AU - McGinnis,Ellen W, AU - Rosenblum,Katherine L, AU - Bocknek,Erika L, AU - Beeghly,Marjorie, AU - DeCator,Draycen, AU - Abelson,James L, Y1 - 2015/03/18/ PY - 2014/07/25/received PY - 2015/01/20/accepted PY - 2015/3/19/entrez PY - 2015/3/19/pubmed PY - 2015/12/29/medline KW - HPA axis KW - infant KW - mother-infant relations KW - stress SP - 356 EP - 64 JF - Developmental psychobiology JO - Dev Psychobiol VL - 57 IS - 3 N2 - This study characterized the longitudinal evolution of HPA axis functioning from 7 to 16 months of age and identified individual and environmental factors that shape changes in HPA axis functioning over time. Participants were 167 mother-infant dyads drawn from a larger longitudinal study, recruited based on maternal history of being maltreated during childhood. Salivary cortisol levels were assessed before and after age-appropriate psychosocial stressors when infants were 7 and 16 months old. Maternal observed parenting and maternal reports of infant and environmental characteristics were obtained at 7 months and evaluated as predictors of changes in infant baseline cortisol and reactivity from 7 to 16 months. Results revealed that infants did not show a cortisol response at 7 months, but reactivity to psychosocial stress emerged by 16 months. Individual differences in cortisol baseline and reactivity levels over time were related to infant sex and maternal overcontrolling behaviors, underscoring the malleable and socially informed nature of early HPA axis functioning. Findings can inform prevention and intervention efforts to promote healthy stress regulation during infancy. SN - 1098-2302 UR - https://www.unboundmedicine.com/medline/citation/25783617/Longitudinal_examination_of_infant_baseline_and_reactivity_cortisol_from_ages_7_to_16_months_ L2 - https://doi.org/10.1002/dev.21296 DB - PRIME DP - Unbound Medicine ER -