We are grateful to the infants and parents who participated. This work was partly supported by a scholarship awarded to S. Peykarjou by the Fonds de la Recherche Scientifique.
How do 9-month-old infants categorize human and ape faces? A rapid repetition ERP study
Article first published online: 2 JUN 2014
Copyright © 2014 Society for Psychophysiological Research
Volume 51, Issue 9, pages 866–878, September 2014
How to Cite
Peykarjou, S., Pauen, S. and Hoehl, S. (2014), How do 9-month-old infants categorize human and ape faces? A rapid repetition ERP study. Psychophysiology, 51: 866–878. doi: 10.1111/psyp.12238
- Issue published online: 20 JUL 2014
- Article first published online: 2 JUN 2014
- Manuscript Accepted: 22 APR 2014
- Manuscript Received: 27 JUN 2013
- Fonds de la Recherche Scientifique
- Face processing;
- Event-related potentials
The current study investigates how infants categorize human compared to ape faces. Nine-month-old infants were presented with priming stimuli related to human (N = 24) or ape (N = 25) face targets on different levels of categorization. Event-related potentials were recorded during a passive-looking rapid repetition paradigm. In a within-subjects design, priming effects of the same faces, different faces from the same basic-level category, different faces from the other basic-level category (human/ape faces), and house fronts were examined. Human and ape faces were first categorized on a superordinate level (“faces”), as indicated by enhanced P1 amplitude and reduced P1 latency for faces primed by any faces. Then, human and ape faces were categorized on a basic level. N290 amplitude and latency were larger for human and monkey targets primed by human faces. Neither human nor ape faces were categorized on the individual level.