Table A2.
Individual Measures of Composites and Model Fits of Confirmatory Factor Analyses
| Composite | Measures | X2(df, n) | P | CFI | RMSEA |
|---|---|---|---|---|---|
| Processing Speed (PS) |
Wechsler Symbol Search & Coding B; Colorado Perceptual Speed (DeFries et al., 1997), Identical Pictures (French, Ekstrom, & Price, 1963), Trails A & B (Reitan, 1971) |
41.97(8, 2332) | <.001 | .990 | .043 |
| Working Memory (WM) |
Wechsler Digit Span & Arithmetic; Sentence Span (Siegel & Ryan, 1989), & Counting Span (Case, Kurland, & Goldberg, 1982) |
7.26(2, 2332) |
.027 | .997 | .034 |
| Phoneme Awareness (PA) |
Phoneme Deletion 1 and 2 (Olson, Forsberg, Wise, & Rack, 1994), Weighted Pig Latin (Olson, Wise, Conners, Rack, & Fulker, 1989), Lindamood Auditory Conceptualization Test (Lindamood & Lindamood, 1971) |
1.30(1, 2145) |
.254 | 1.000 | .012 |
| Verbal Reasoning (VR) |
Wechsler Information, Similarities, Vocabulary, & Comprehension |
28.38(2, 2332) |
<.001 | .993 | .075 |
| Nonverbal Reasoning (NVR) |
Wechsler Block Design, Object Assembly, Picture Completion, & Picture Arrangement |
.28(1, 2332) | .594 | 1.000 | .000 |
| Inhibition (INH) |
GDS Vigilance Commission Errors (Gordon, 1983); Stop Signal Task (Logan, 1994); Stroop Color Word Interference (Golden, 1978) |
0.00(0, 2146) |
<.001 | 1.000 | .000 |
| Standard Deviation of Reaction Time (SDRT) |
Stop Signal Task (Logan, 1994) | n/a | n/a | n/a | n/a |
| Risk | Cambridge Gambling Task (CGT; Rogers et al., 1999) Overall Proportion Net & Risk Taking |
0.00(0, 244) | <.001 | 1.000 | .000 |
| Monitor | CGT Delay Aversion, Quality of Decision Making, & Risk Adjustment |
0.00(0, 244) | <.001 | 1.000 | .000 |
Note: The Wechsler test version varied depending on testing date and participant age. Sixty-one percent of participants completed subtests from the Wechsler Intelligence Scale for Children, Revised (WISC-R; Wechsler, 1974); 36% the Wechsler Intelligence Scale for Children, Third Edition (WISC-III; Wechsler, 1991); 1% the Wechsler Adult Intelligence Scale, Revised (WAIS-R; Wechsler, 1981); and 2% the Wechsler Adult Intelligence Scale, Third Edition (WAIS-III; Wechsler, 1997). The symbol search subtest always originated from the WISC-III battery and was administered to 70% of participants. The Stop Signal Task (Logan, 1994) standard deviation of reaction time (SDRT) was a single measure and thus not transformed into a factor score.