Three forms of a symbol-digit substitution task were administered to 62 female and 96 male college students. Results support the theory that the superior performance of women over men on the Digit-Symbol Substituion subtest of the Wechsler scales is due to their greater ability to encode symbols verbally. (Author/JAC)

This investigation examined the effects of mediation and Intelligence Quotient (IQ) scores on conceptual learning for black college students. It was predicted that higher IQ scoring subjects would not outperform lower IQ scoring subjects under nonmediated learning conditions but would significantly outperform lower IQ scoring subjects under…