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Recent studies found that a disorganized attachment style developed in infancy only when infants had the short version of the serotonin transporter gene, 5-HTTLPR. This gene-environment interaction only occurred when A. The infants' other consciousness developed poorly in the first six months after birth. B. Mothers showed a low level of responsiveness toward their infants. C. Maternal nutrition was deficient during the prenatal period. D. The infants were temperamentally inclined toward negative affectivity.
Sagot :
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