Data‐processing levels and thought disorder in schizophrenia

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Abstract
It is argued that most experimental studies purporting to demonstrate “thought disorder” in schizophrenia are ambiguous as to interpretation since they fail to distinguish between the various levels of information‐processing at which break‐down can occur. Evidence from various sources is presented which suggests that thought disorder is secondary to a primary slowness in processing information, which in turn leads to continuous loss of information from the short‐term memory system. A technique for testing the theory is suggested. Other theories of thought‐disorder are discussed and it is suggested that these theories relate to phenomena which result from the primary defect.

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