A normative study of the Frontal Lobe Personality Scale (FLOPS)
Lori E. Azzara (2005)
The Frontal Lobe Personality Scale (FLOPS) is a behavior rating scale (family report and self-report) designed to quantify frontal lobe behavior syndromes associated with 3 distinct frontal subcortical circuits (Apathy, Disinhibition, and Executive dysfunction). Previous research (Grace, Stout, & Malloy, 1999) indicates that the FLOPS is a reliable and valid instrument with multiple clinical uses. However, to date, interpretation of data has been limited by the lack of a normative group. This study reports the internal consistency of the FLOPS on such a sample; normative data for age cohorts, education levels, and gender; and the results of a factor analysis on the scale items. Adult volunteers were recruited from communities within a radius of 100 miles to metropolitan Boston and sorted based on gender, age, and highest level of education. Three hundred sixty-four (364) sets of protocols included Subject and Family responses. Participants ranged from 18 to 83.5 years of age and had 10 to 24 years of education. They were 55% female and 45% male. Normative data include means and standard deviations, z scores, T scores and percentiles, stratified by age, education, and gender. The standard error of measurement of scores is also reported. A 5-factor solution accounted for a modest level of variance (38%). Three of the 5 factors noted are consistent with the original 3-factor model proposed by the FLOPS authors. Thirty-nine (39) of the 46 original items (85%) loaded saliently on one of the 5 factors. That is, 39 items loaded on 1 factor, or when loadings occurred on several factors, there was a stronger loading on 1 of the factors than the others. At a minimum, the results of the study will allow for comparisons of patients with neurological problems, specifically frontal lobe behavioral syndromes, to the members of this normative group.