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. 2011 Apr 29;6(4):e19153. doi: 10.1371/journal.pone.0019153

Figure 2. Cross-sectional developmental trajectories representing the evolution in time of the IQ and memory impairments from 7 to 22 years of age.

Figure 2

The developmental pattern for Global IQ (A), Visual episodic memory (B) and Verbal episodic memory (C) are illustrated for the controls (red line) and young offspring at genetic risk (blue line). The effect sizes (ES) express the magnitude of the difference between offspring and controls at each age period. The statistically significant Group x Age Periods interaction term obtained only for the two tests of visual episodic memory (p  =  .047 for Rey Complex Figure Test immediate recall, RCFTIR, and p  =  .035 for Rey Complex Figure Test immediate recall, RCFTDR) suggested that the cognitive differences varied with age for this function. A trend approaching significance could be detected for one of the two tests of verbal episodic memory (CVLTDR, p  =  .056).