title: Performance of process and reactive schizophrenics on a symbol-digit substitution task.
mesh_terms: D000328:Adult; D000367:Age Factors; D005556:Form Perception; D006801:Humans; D007361:Intelligence Tests; D008570:Memory, Short-Term; D009949:Orientation; D012559:Schizophrenia / Q000145:classification*; D012565:Schizophrenic Psychology