IQ scores provide the best general predictor of success in education, job training, and work. However, there are many ways in which IQ scores can be increased, for instance by means of retesting or participation in learning potential training programs. What is the nature of these score gains? Jensen [Jensen, A. R. (1998a). "The g factor: The…

Adoption studies were reviewed for evidence of the malleability of intelligence quotient (IQ). Although moderate estimates range between 20 and 25 points, it is argued that the standard adoption study provides little evidence about IQ malleability and that a major study of contrasted environments yields even more conservative estimates. (SLD)

The predictive validity and utility of assessment procedures can be increased by adding predictors to the prediction supplied by general ability tests. Of Jensen's early work comes the suggestion of focusing on the cognitive ability short-term memory (STM), especially for low-"g" Black children. Meta-analysis convincingly shows high…