The present study addressed limitations of a recent confirmatory factor ana
lytic study challenging the hypothesized factor structure of the Beavers In
teractional Scales. That dataset (n = 97) was reanalyzed and two additional
datasets (n = 95, n = 91) were explored. With all three samples, taken sep
arately and together, the Beavers Systems Model, when operationalized in th
e BIS, was not supported. A body of evidence is accumulating which suggests
that clinicians and researchers should be wary of the BIS.