Construct validity of material-specific memory measures following unilateral temporal lobe ablations.

Material-specific memory test performance of 18 left (LTL), and 11 right (RTL), unilateral temporal lobectomy patients was assessed pre- and 1 wk postsurgery. Selective Reminding and Serial Digit Learning tests were the verbal, and Complex Figure and Form Sequence Learning tests were the nonverbal, learning measures. Reasons for the difficulty in finding «pure» measures of visual learning are discussed, and suggestions for future nonverbal memory test development are presented