Abstract: The purpose of this study was to compare the psychometric properties of the Screen
for Cognitive Impairment in Psychiatry (SCIP) when applied to patients diagnosed with
schizophrenia (n = 126) or bipolar I disorder (n = 76), and also to compare the cognitive
impairment in both samples of patients and a control group (n = 83) using the SCIP and a
complete neuropsychological battery. The SCIP is a scale intended to quickly and easily assess
cognitive impairment in patients with severe psychiatric disorders. The results showed firstly
that, in terms of internal consistency, temporal stability, dimensional structure, and criterionreferenced
validity, the SCIP provides reliable and valid scores at an equivalent level in both
schizophrenia and bipolar I disorder samples. Secondly, it showed that differential cognitive
impairment between the two patient groups occurs only in verbal memory, although the effect
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