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Bar chart showing variance partitioning for VIQ, PIQ, and RCPM. The variance explained by age was significant in all IQ scores, but SSRT significantly predicted unique variance only in VIQ but not in PIQ or RCPM. (SSRT, stop-signal reaction time; VIQ, Verbal IQ score; PIQ, Performance IQ score; RCPM, Raven's Colored Progressive Matrices).
