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Table 1. 

Characteristics of the Participant Groups

 Imagery Groupp
LowMidHighLow vs. MidLow vs. HighMid vs. High
Age, years 23.07 (2.31) 21.87 (2.20) 23.93 (5.26) .16 .57 .18 
No. of male participants 6 (40.0%) 7 (46.67%) 8 (53.33%) .71 .46 .72 
Years of education 16.0 (1.89) 15.8 (1.61) 16.0 (2.33) .76 1.0 .79 
Matrix Reasoning 12.47 (2.26) 11.47 (2.17) 12.07 (3.61) .23 .72 .59 
TOPF 54.93 (5.13) 57.47 (5.49) 53.0 (9.47) .20 .49 .13 
FSIQ 110.13 (5.48) 111.97 (6.13) 110.22 (5.99) .39 .97 .44 
VCI 108.93 (5.32) 110.81 (6.18) 108.75 (6.0) .38 .93 .36 
VVIQ mean score 3.08 (0.45) 2.15 (0.17) 1.51 (0.25) <.001 <.001 <.001 
 Imagery Groupp
LowMidHighLow vs. MidLow vs. HighMid vs. High
Age, years 23.07 (2.31) 21.87 (2.20) 23.93 (5.26) .16 .57 .18 
No. of male participants 6 (40.0%) 7 (46.67%) 8 (53.33%) .71 .46 .72 
Years of education 16.0 (1.89) 15.8 (1.61) 16.0 (2.33) .76 1.0 .79 
Matrix Reasoning 12.47 (2.26) 11.47 (2.17) 12.07 (3.61) .23 .72 .59 
TOPF 54.93 (5.13) 57.47 (5.49) 53.0 (9.47) .20 .49 .13 
FSIQ 110.13 (5.48) 111.97 (6.13) 110.22 (5.99) .39 .97 .44 
VCI 108.93 (5.32) 110.81 (6.18) 108.75 (6.0) .38 .93 .36 
VVIQ mean score 3.08 (0.45) 2.15 (0.17) 1.51 (0.25) <.001 <.001 <.001 

Means (SDs). Two-tailed p values for t tests (χ2 test for the number of male participants). General intellect was measured using the Matrix Reasoning subtest (scaled scores) of the Wechsler Adult Intelligence Scale-IV (Wechsler, 2008) and the Test of Premorbid Function (TOPF; Wechsler, 2011), provided an estimate of Full Scale IQ (FSIQ) and a Verbal Comprehension Index (VCI).

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