Children practice their spatial skills when playing with spatial toys, such as construction materials, board games, and puzzles. Sex and SES differences are observed in the engagement in such spatial play activities at home, which relate to individual differences in spatial performance. The current study investigated the effects of explicitly…

Rural non-readers and culturally different students often perform poorly on intelligence tests. The Gilliland General Purpose Learning Potential Examination is an intelligence test developed specifically to indicate the learning potential of those students. Five of the examination's seven sections are unrelated to the ability to read, one requires…