Associations Between Original and a Reduced Frontal Systems Behavior Scale (FrSBe), Cognition, and Activities of Daily Living in a Large Neurologic Sample.

A recent confirmatory factor analysis (CFA) on the Frontal Systems Behavior Scale (FrSBe) indicated that the basic structure of the FrSBe subscales held after removal of 8 weak items. In a replication of previous studies using the original FrSBe, the present study explored associations between a reduced version of the FrSBe, cognition, and activities of daily living (ADLs) in a large mixed outpatient neurologic sample. Consistent with previous findings with the original FrSBe, significant associations existed between reduced FrSBe scores and the Mattis Dementia Rating Scale-Second Edition. Additionally, after controlling for age, gender, and education, reduced FrSBe Apathy was associated with basic ADLs, and reduced FrSBe Disinhibition was associated with instrumental ADLs. These results offer replication in a larger sample of previous findings and statistical support for a reduced FrSBe beyond CFA results alone.