Stress Reactivity and Self-Recognition |
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| Authors: | Michael Lewis Douglas S Ramsay |
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| Institution: | Institute for the Study of Child Development, Department of Pediatrics, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, 97 Paterson Street, New Brunswick, NJ 08903-0019;The University of Medicine and Dentistry of New Jersey |
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| Abstract: | This study examined longitudinally whether early differences in reactivity to stress are related to self-recognition at 18 months of age. Adrenocortical and behavioral to Stress responses to routine inoculation at 2, and 4 months and at 6 and 18 months were obtained. Previous finding indicated a development shift in adrenocortical functioning by 6 months of age that included the emergence of stable individual differences in cortisol response from this point in development. Self-recognition was related to greater cortisol response and less rapid quieting at 6 to 18 months, whereas 2- to 4-month cortisol and quieting response did not differentiate self-recognizers and non-self-recognizators. These findings indicate a role for temperament differences in facilitating the emergence of self-recognition. |
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