What is the relation between the cognitive competence of a national population that nation's economic prosperity? Lynn and Vanhanen [Lynn, R. & Vanhanen, T. (2002). "IQ and the wealth of nations." Westport, CT: Praeger.] presented data pointing to an exceptionally strong relationship between IQ scores and Gross Domestic Product per…

Westbrook (1983) challenged the validity of the construct "career maturity" because measures such as the Career Maturity Inventory Attitude Scale (Crites, 1973) correlate to measures of mental ability. Rather than interpreting this association as evincing lack of discriminant validity, the association should be interpreted as supporting…

This editorial proposes that the dependent variables that predict childhood intelligence quotient (IQ) from habituation and recognition memory assessments made during infancy may primarily reflect individual differences in rate of information processing. Inhibition may be a stable thread in mental development. (Author/SLD)