This study utilizing a group of monolingual and a group of bilingual 10-year old children obtained from 6 Montreal French schools were given verbal and nonverbal intelligence tests as well as measures of attitudes to the English and French communities. It is interesting to note that this study contrary to others found that bilinguals performed significantly better than their monolingual controls both on the verbal and the nonverbal intelligence tests. Factor analysis supported the hypothesis that the structures of intellect for the 2 groups differed with the bilingual group possessing a more diversified set of mental abilities. Attitude studies also appear to give the bilinguals a more favorable attitude, than their monolingual comparable peers, toward the English-Canadians and less toward the French-Canadians.
The relation of bilingualism to intelligence. Psychological Monographs, 76(27, Whole No. 546), 23. from PsycINFO database.
eal, E., & Lambert, W. E. (1962).