Publications

human visual ecology and orientation anisotropies in acuity.	the visual environment of cree indians from the east coast of james bay, quebec, is different from that of city-raised euro-canadians. so also are their corresponding orientation anisotropies in visual acuity. a euro-canadian sample exhibited the usual higher resolution for vertically and horizontally oriented gratings as compared with oblique orientations, while a cree indian sample did not. the most parsimonious explanation of these acuity differences is that orientation-specific detectors in ...	1973	4752214
comparing the clinical presentation of first-episode psychosis across different migrant and ethnic minority groups in montreal, quebec.	to explore differences in severity and nature of symptoms of first-episode psychosis (fep) according to ethnic group and migrant status.	2012	22546062