Use of self-reported psychopathy assessments with older adults: An update on evaluation of their psychometrics for people over 60 years.

Studies of the use of self-rated psychopathy tools remain inconclusive about their psychometrics in older people. Further investigations should follow three main paths: first, deriving samples solely of older adults from the general population-to improve the generalisability of their results; second, item response theory methods should be used to detect differential item functioning between younger and older adults; finally, modifications of extant measures with and without items with potential age-bias should be tested.