HRNB factors with simultaneous-successive marker variables.

The Halstead-Reitan neuropsychological Battery (HRNB) was factor-analyzed along with a simultaneous and successive processing index form, the WISC-R. Using 970 learning disabled children, a four factor solution was found to represent the underlying structure best. The factors included: (1) Simple Motor, (2) Tactile-Kinesthesis with simultaneous processing demands, (3) Memory/Attention with interpretable loading on the successive processing index, and (4) Noverbal Visual-Spatial Memory with simultaneous processing demands.