Scores, hypothesized abilities and Scales on the Lorge-Thorndike Intelligence Tests (LT), Multi-Level Edition, were intercorrelated and factor analyzed to determine overlap of structure-of-intellect (SOI) ability measure, their degree of relationship with LT scales, and the possible presence of second order factors. (Author/BJG)

The rod and frame performance of 70 children, 5 to 7 years of age, with respect to sex and age differences, reliability, and its relationship to general intelligence, was investigated. The rod and frame test was administered individually and again following a period of 35 to 69 days, at which time the Lorge Thorndike Intelligence Test, form 1A,…