Clinical features:
(1) apathetic and indifferent
(2) may have occasional, brief, aggressive outbursts
(3) psychomotor retardation
(4) stimulus boundedness
(5) motor perseveration and impersistence
(6) discrepant motor and verbal behavior
(7) motor programming deficits (see below)
(8) poor word-list generation
(9) poor abstraction and categorization
(10) segmented approach to visuospatial analysis
Motor programming deficits:
(1) multiple loops
(2) rhythm tapping
(3) reciprocal programs
(4) alternating programs
(5) three step hand sequences
