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Direct linkDuffy, Gavin; Power, Jason; Sorby, Sheryl; Bowe, Brian – Engineering Design Graphics Journal, 2018
Spearman concluded that performance on any test of mental ability could be explained by several cognitive factors organized hierarchically as one general factor and several subordinate specific factors (Spearman, 1904, 1927). The general factor accounted for the significant amount of inter-correlation between all ability tests for any one…
Descriptors: Spatial Ability, Intelligence, Problem Solving, Word Problems (Mathematics)
