Gerald S. Lesser, Gordon Fifer, Donald H. Clark, Mental Abilities of Children from Different Social-Class and Cultural Groups, Monographs of the Society for Research in Child Development, Vol. 30, No. 4, Mental Abilities of Children from Different Social-Class and Cultural Groups (1965), pp. 1-115
No takes yet. Share an insight, caveat, or question.
Lesser et al. (1965) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: