Table 7a.

EFA of the combined HRB and WAIS/WAIS-R: CF-varimax-rotated factor loadings of the 5-factor solution

	F1	F2	F3	F4	F5
Test measures	Working memory/verbal attention	Semantic knowledge	Visuospatial cognition	Perceptual-motor speed	Perceptual attention
HRB
Aphasia Screening	0.302	0.299	−0.052	0.280	−0.221
Speech-Sounds Perception	0.336	0.126	0.034	0.227	0.267
Category	0.139	0.057	0.528	0.166	0.171
TPT (memory)	0.156	−0.038	0.488	0.025	0.245
TPT (time – total)	0.020	−0.058	0.543	0.271	0.269
Trail Making Test—Part A	−0.027	−0.004	0.059	0.744	0.106
Trail Making Test—Part B	0.166	0.034	0.089	0.678	0.069
SPE (right side)	0.142	0.074	0.167	0.140	0.443
TFR (right hand)	0.052	0.057	0.034	0.287	0.392
Seashore Rhythm	0.498	−0.035	−0.051	0.050	0.272
WAIS/WAIS-R
Digit Span	0.883	−0.033	−0.001	−0.028	−0.017
Arithmetic	0.311	0.298	0.270	0.132	−0.262
Information	0.051	0.669	0.221	−0.005	−0.262
Vocabulary	0.128	0.828	−0.059	0.065	−0.032
Comprehension	0.014	0.779	−0.018	−0.058	0.209
Similarities	0.019	0.561	0.234	0.125	−0.033
Picture Completion	0.057	0.321	0.338	0.110	0.213
Picture Arrangement	0.069	0.236	0.367	0.147	0.226
Block Design	0.149	0.101	0.688	0.067	0.001
Object Assembly	0.046	0.026	0.708	0.101	0.013
Digit-Symbol Coding	0.030	−0.049	−0.028	0.741	−0.036

Note: EFA = Exploratory Factor Analysis; HRB = Halstead-Reitan Battery; WAIS = Wechsler Adult Intelligence Scales; WAIS-R = Wechsler Adult Intelligence Scales-Revised. Light gray-shaded areas indicate loadings ≥0.24 (i.e., items with more than 5% overlapping variance with the factor); and dark gray-shaded areas indicate loadings ≥0.4 considered priorities for factor interpretation. For better interpretability, the oblique rotation method CF-varimax was used here instead of geomin, yielding a consistent factor structure overall but more robust loadings on the fifth factor.