It is proposed that the basic disturbance in schizophrenia corresponds
to a disruption of the normal relationship between stored material an
d current sensory input. The link between information processing distu
rbances and their biological bases may be facilitated by the use of pa
radigms derived from animal learning theory. A model for the emergence
of schizophrenic symptoms is presented. The core cognitive abnormalit
y may result from a disturbance at any point in the neural circuit inv
olved in the prediction of subsequent sensory input.