A Longitudinal Study of Infant Cortisol Response During Learning Events

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Opis: A Longitudinal Study of Infant Cortisol Response During Learning Events - Kelly Jurado, Gin Morgan, Laura Thompson

Cortisol, a hormone associated with the stress response, affects adult performance on learning and memory tasks, yet whether cortisol helps or hinders performance depends on the direction of cortisol change during the task, the amount of change, and the type of task. Past studies of infants are few and confl icting regarding whether an increasing or decreasing cortisol reactivity pattern facilitates cognitive performance. Similarly, few studies have assessed whether an association exists between maternal sensitivity and learning in infancy. The present study assessed relations between maternal sensitivity, infants' cortisol response to maternal separation and a novel cognitive task, and cognitive performance at 3, 6, 8, 10, and 12 months. At each phase, infants completed different cognitive tasks, maternal and infant cortisol was measured before and after the task, and motherinfant behavior was assessed to determine maternal sensitivity. When performance on the tasks varied with cortisol response or maternal sensitivity, better performance was associated with a decreasing pattern of cortisol response (lower cortisol after the task than before) and higher levels of maternal sensitivity. Relations between cortisol response and infant cognitive performance were not, however, mediated by maternal sensitivity. Longitudinal analyses revealed no intra-individual stability in infants' cortisol response patterns over the fi rst year; however, at the group level, the decreasing cortisol response pattern became more prevalent across this age range, especially in girls. Additionally, beginning at 6 months, maternal sensitivity was stable across phases. Results are discussed in terms of their implications for the development of regulation abilities during infancy.A LONGITUDINAL STUDY OF INFANT CORTISOL RESPONSE DURING LEARNING EVENTS CONTENTS ABSTRACT I. vii INTRODUCTION 1 II. GENERAL METHODOLOGY FOR ALL PHASES OF THE LONGITUDINAL STUDY 25 III. JUSTIFICATION FOR CORTISOL RESPONSE CATEGORIES IV. 40 LONGITUDINAL ANALYSES OF CORTISOL AND MATERNAL SENSITIVITY 48 V. CORTISOL RESPONSE PATTERNS AND DETECTION OF CHANGE IN AUDITORY AND VISUAL STIMULI 58 VI. MATERNAL SENSITIVITY AND DETECTION OF CHANGE IN AUDITORY AND VISUAL STIMULI 84 VII. GENERAL DISCUSSION 91 REFERENCES 106 APPENDIX 121 ACKNOWLEDGMENTS 122 COMMENTARY GLUCOCORTICOIDS AND LEARNING DURING INFANCY: A COMMENTARY Megan R.Gunnar 123 CONTRIBUTORS 132 STATEMENT OF EDITORIAL POLICY 133 SUBJECT INDEX 135


Szczegóły: A Longitudinal Study of Infant Cortisol Response During Learning Events - Kelly Jurado, Gin Morgan, Laura Thompson

Tytuł: A Longitudinal Study of Infant Cortisol Response During Learning Events
Autor: Kelly Jurado, Gin Morgan, Laura Thompson
Wydawnictwo: John Wiley
ISBN: 9781119229087
Rok wydania: 2015
Ilość stron: 316
Oprawa: Miękka
Waga: 0.29 kg


Recenzje: A Longitudinal Study of Infant Cortisol Response During Learning Events - Kelly Jurado, Gin Morgan, Laura Thompson

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A Longitudinal Study of Infant Cortisol Response During Learning Events

, ,

Cortisol, a hormone associated with the stress response, affects adult performance on learning and memory tasks, yet whether cortisol helps or hinders performance depends on the direction of cortisol change during the task, the amount of change, and the type of task. Past studies of infants are few and confl icting regarding whether an increasing or decreasing cortisol reactivity pattern facilitates cognitive performance. Similarly, few studies have assessed whether an association exists between maternal sensitivity and learning in infancy. The present study assessed relations between maternal sensitivity, infants' cortisol response to maternal separation and a novel cognitive task, and cognitive performance at 3, 6, 8, 10, and 12 months. At each phase, infants completed different cognitive tasks, maternal and infant cortisol was measured before and after the task, and motherinfant behavior was assessed to determine maternal sensitivity. When performance on the tasks varied with cortisol response or maternal sensitivity, better performance was associated with a decreasing pattern of cortisol response (lower cortisol after the task than before) and higher levels of maternal sensitivity. Relations between cortisol response and infant cognitive performance were not, however, mediated by maternal sensitivity. Longitudinal analyses revealed no intra-individual stability in infants' cortisol response patterns over the fi rst year; however, at the group level, the decreasing cortisol response pattern became more prevalent across this age range, especially in girls. Additionally, beginning at 6 months, maternal sensitivity was stable across phases. Results are discussed in terms of their implications for the development of regulation abilities during infancy.A LONGITUDINAL STUDY OF INFANT CORTISOL RESPONSE DURING LEARNING EVENTS CONTENTS ABSTRACT I. vii INTRODUCTION 1 II. GENERAL METHODOLOGY FOR ALL PHASES OF THE LONGITUDINAL STUDY 25 III. JUSTIFICATION FOR CORTISOL RESPONSE CATEGORIES IV. 40 LONGITUDINAL ANALYSES OF CORTISOL AND MATERNAL SENSITIVITY 48 V. CORTISOL RESPONSE PATTERNS AND DETECTION OF CHANGE IN AUDITORY AND VISUAL STIMULI 58 VI. MATERNAL SENSITIVITY AND DETECTION OF CHANGE IN AUDITORY AND VISUAL STIMULI 84 VII. GENERAL DISCUSSION 91 REFERENCES 106 APPENDIX 121 ACKNOWLEDGMENTS 122 COMMENTARY GLUCOCORTICOIDS AND LEARNING DURING INFANCY: A COMMENTARY Megan R.Gunnar 123 CONTRIBUTORS 132 STATEMENT OF EDITORIAL POLICY 133 SUBJECT INDEX 135

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Szczegóły: A Longitudinal Study of Infant Cortisol Response During Learning Events - Kelly Jurado, Gin Morgan, Laura Thompson

Tytuł: A Longitudinal Study of Infant Cortisol Response During Learning Events
Autor: Kelly Jurado, Gin Morgan, Laura Thompson
Wydawnictwo: John Wiley
ISBN: 9781119229087
Rok wydania: 2015
Ilość stron: 316
Oprawa: Miękka
Waga: 0.29 kg


Recenzje: A Longitudinal Study of Infant Cortisol Response During Learning Events - Kelly Jurado, Gin Morgan, Laura Thompson

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