Constructional apraxia: An information processing analysis

Constructional apraxia is a disorder resulting from neurological damage which is manifested by the inability to copy and/or construct to command two- and three-dimensional stimuli. Three neurological patients presenting with these clinical symptoms were administered a battery of tests that were developed on the basis of a model describing the processing stages involved in copying and construction to command. The patients investigated differed in the pattern of performance across the tests in the battery. It was suggested that constructional apraxia is a syndrome that may be caused by different processing impairments, although this conclusion was tempered by a difficulty in separating out some of the processing components.