Differences between Japanese infants and Caucasian American infants in behavioral and cortisol response to inoculation.
The behavioral and cortisol responses of Japanese infants and Caucasian American infants, 4 months of age, were observed during and following routine inoculation. The Caucasian American group showed a more intense initial affective response and a longer latency to quiet than the Japanese group; the Japanese group showed a greater cortisol response. A 4-group taxonomy was created based on high or low behavioral and cortisol response: high behavior-high cortisol, low behavior-low cortisol, high behavior-low cortisol, and low behavior--high cortisol. There were significant differences between the 2 groups of infants using this taxonomy: Infants in the Caucasian American group were more likely to fall in the high behavior-low cortisol group, while infants in the Japanese group were more likely to fall in the low behavior-high cortisol group.
Lewis
M
M
Institute for the Study of Child Development, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick 08903-0019.
Ramsay
D S
DS
Kawakami
K
K
D002652:Child Behavior / Q000502:physiology*; D002657:Child Development; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000502:physiology*; D007223:Infant; D007564:Japan; D008297:Male; D012463:Saliva / Q000737:chemistry; D013315:Stress, Psychological / Q000523:psychology; D013694:Temperament; D014481:United States; D014611:Vaccination / Q000523:psychology*; D014743:Videotape Recording
D006854:Hydrocortisone