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Psicologia: Reflexão e Crítica
On-line version ISSN 1678-7153
SIMAS, Maria Lúcia de Bustamante and SANTOS, Natanael Antonio dos. The multiple-faces effect: preliminary studies. Psicol. Reflex. Crit. [online]. 2005, vol.18, n.1, pp.104-108. ISSN 1678-7153. http://dx.doi.org/10.1590/S0102-79722005000100014.
The multiple-faces effect was first investigated at the blind spot using familiar faces. We analyzed the effect into 4 categories: 1) disappearance/darkening/whitening of face parts; 2) variation in size of face parts; 3) perception of movement /change in facial expression; 4) perception of other faces. Categories 1 and 2 reflect initial impressions. Only reports falling into categories 3 and/or 4 show the multiple-faces effect. Results analyzed data from 37 subjects (using mother and/or father and/or other relatives' photographs). Analysis across subjects yielded 87% and 68% in categories 3 and 4, respectively. In category 3, changes in facial expression were 90% and 82% for mother and father faces, respectively. In category 4, other faces were more frequently observed with the mother's face (73%) than the father's (41%) face. We discuss these results in terms of peripheral processing of form considering a possible tuning for faces resulting from frequency of viewing the same face during early visual development.
Keywords : Visual adaptation; face adaptation; face perception; multiple-faces effect; spatial frequency.