"Tuning in" and "fading out": performance of aphasic patients on ordered PICA subtests

Performance of 182 aphasic patients was examined on 11 PICA subtests for which the order of presentation of items is specified in an attempt to determine possible "tuning in" and "fading out" behavior. Results indicate that these phenomena occur as measurable patterns, which are to some degree dependent on the severity of aphasia as measured by each patient's overall PICA percentile.