Mentally retarded individuals have more difficulty dealing with strategic games and puzzles than other tasks. Games have been played since ancient times and throughout the world, with performance indicating wisdom. Games invariably express certain universal intellectual traits. Mancala and Three in a Row games are briefly described. (Author/RD)

Disparities between European countries and the U.S. in terms of incidence and prevalence of mild mental retardation have become apparent. A model of intellectual performance that might explain disparities and predict future levels of occurrence of mild mental retardation is presented. Such explanations are relevant for theory and policy decisions.…