The relationship between the reaction time in simple or complex tasks, or the inspection time, and the results in intelligence tests has been analysed over time. In this article, the procedures used in the assessment of both reaction and inspection time are described. Correlation coeffi cients that such tasks hold with intelligence tests are also presented, as well as some explanations given by the authors. Even though the correlation indexes vary according to the nature of the tasks, and namely with the degree of subjects homogeneity or heterogeneity in the samples, studies systematically point to negative and statistically signifi cant correlations. Nevertheless, the most important challenge in this research fi eld is to develop and to test a psychological theory that explains the correlations found.
intelligence; information processing; short-term memory