McKelvie S J
Department of Psychology, Bishop's University, Lennoxville, Quebec, Canada.
Percept Mot Skills. 1987 Oct;65(2):388-90. doi: 10.2466/pms.1987.65.2.388.
Subjects viewed upright photographs of faces, then attempted to recognize them unchanged, vertically reversed or inverted. In two of four conditions, hit scores were lower for inverted than vertically reversed faces, suggesting that lateral reversal is a meaningful component of inversion. The effect was not sufficiently strong, however, to overcome a generally high false-alarm rate for upside-down faces.
