Serial-position effects in infants' recognition memory

Abstract

Preverbal infants (7 months of age) were repeatedly shown a fixed series of photographs of adult female faces. The effects of the order of presentation of a photo (first, middle, or last) and the duration of retention (5 sec, 1 rain, or 5 rain) were subsequently assessed in a probe-recognition test. Both primacy and recency effects were obtained, but there was no evidence of recognition of the face that appeared in the middle of the series. There was also no evidence of recognition of the most recently studied face following the 5-rain retention interval. The bowed serial-position function and labile recency effect match those found in the performance of older subjects in classical verbal learning tasks, and we suggest an automatic process underlying these effects. Our explanation emphasizes differential learning and the context of the items to be remembered. © 1983 Psychonomic Society, Inc.