Abstract
Human infants differ in the age at which they first begin to-fear the visually unfamiliar. Among a sample of male infants, a precocious onset of fear was predictive of heightened fearfulness at age 1 year; such developmental continuity was not observed in a comparable female sample. Almost identical patterns were observed in a previous sample; the present replication strengthens the argument for a sex-linked constitutional factor that contributes to the ontogeny of fearfulness.
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Bronson, G.W. Sex differences in the development of fearfulness: A replication. Psychon Sci 17, 367–368 (1969). https://doi.org/10.3758/BF03335286
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DOI: https://doi.org/10.3758/BF03335286