Abstract
Timed performance measures from a coincidence timing (CT) task taking about 10 minutes are shown to have significant correlations with psychometric general intelligence in a group of 56 children. This task required subjects to press a key when a moving target is coincident with a stationary line. The mean absolute error across three conditions (CTE) correlated - .294 with Raven's Standard Progressive Matrices (SPM) scores but was sex biased, with girls being less accurate than boys. The mean intrasubject standard deviation or consistency (CTC) correlated - .359 and showed no sex bias. The overall performance score (CTP, the sum of CTE and CTC) correlated - .357, and had a smaller but significant sex bias. The correlations partialing out sex were - .363, - .371, - .369 for CTE, CTC, and CTP, respectively. It is suggested that CT tasks are a useful addition to the already known timed performance measures that correlate with intelligence and can provide a tool to increase our understanding of psychometric intelligence.
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