Childhood derivatives of inhibition and lack of inhibition to the unfamiliar.
Behavioral and physiological assessments of 41 7 1/2-year-old children who had been selected to be inhibited or uninhibited at 21 months and observed again at 4 and 5 1/2 years revealed that each of the 2 original behavioral profiles predicted theoretically reasonable derivatives. A majority of the formerly shy, timid children became quiet and socially avoidant in unfamiliar social situations, while a majority of the formerly sociable children became talkative and interactive with peers and adults. Absolute heart-rate and cortisol level at 7 1/2 years were not as discriminating of the 2 behavioral groups as they had been 2 years earlier.
Kagan
J
J
Department of Psychology, Harvard University, Cambridge, MA 02138.
Reznick
J S
JS
Snidman
N
N
Gibbons
J
J
Johnson
M O
MO
D001143:Arousal / Q000502:physiology; D001288:Attention / Q000502:physiology; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005556:Form Perception / Q000502:physiology; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007266:Inhibition, Psychological; D008568:Memory / Q000502:physiology; D011939:Mental Recall / Q000502:physiology; D009043:Motor Activity / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology
D006854:Hydrocortisone