Faces in early visual environments are persistent not just frequent

Vision Research
Swapnaa Jayaraman, Linda B Smith

Abstract

The regularities in very young infants' visual worlds likely have out-sized effects on the development of the visual system because they comprise the first-in experience that tunes, maintains, and specifies the neural substrate from low-level to higher-level representations and therefore constitute the starting point for all other visual learning. Recent evidence from studies using head cameras suggests that the frequency of faces available in early infant visual environments declines over the first year and a half of life. The primary question for the present paper concerns the temporal structure of face experiences: Is frequency the key exposure dimension distinguishing younger and older infants' face experiences, or is it the duration for which faces remain in view? Our corpus of head-camera images collected as infants went about their daily activities consisted of over a million individually coded frames sampled at 0.2 Hz from 232 h of infant-perspective scenes, recorded from 51 infants aged 1 month to 15 months. The major finding from this corpus is that very young infants (1-3 months) not only have more frequent face experiences but also more temporally persistent ones. The repetitions of the same very few face identities...Continue Reading

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Citations

Aug 15, 2020·Frontiers in Psychology·Tian Linger XuRalf F A Cox
Aug 12, 2021·Cognitive Science·Samantha M W Wood, Justin N Wood
Aug 5, 2021·Annual Review of Vision Science·Alice J O'Toole, Carlos D Castillo
Jan 26, 2022·Infancy : the Official Journal of the International Society on Infant Studies·Stefania ConteViola Macchi Cassia

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