LACK OF RACIAL-DIFFERENCES IN BEHAVIOR - A QUANTITATIVE REPLICATION OF RUSHTON (1988) REVIEW AND AN INDEPENDENT METAANALYSIS

Rushton (Personality and Individual Differences, 9, 1009-1024, 1988) h ypothesi zed that racial group differences exist across a range of beh aviors from intelligence to social organization. Such differences were then discussed within the context of an evolutionary continuum (Negro id < Caucasoid < Mongoloid). For example, his observations that blacks compared to whites are less intelligent, physically mature more rapid ly, and are more aggressive and impulsive (less law abiding) were said to support the evolutionary hypothesis. Quantitative replication of t he 100 studies included in Rushton's original 'review and evolutionary analysis' and a meta-analysis of 100 randomly selected studies infer that any behavioral differences which do exist between blacks, whites and Asian Americans for example, can be explained in toto by environme ntal differences which exist between them.