sentences:  Research, however, has failed to replicate the two-factor model in female samples.In 2001 researchers Cooke and Michie at Glasgow Caledonian University suggested, using statistical analysis involving confirmatory factor analysis, that a three-factor structure may provide a better model, with those items from factor 2 strictly relating to antisocial behavior (criminal versatility, juvenile delinquency, revocation of conditional release, early behavioral problems and poor behavioral controls) removed.The remaining items would be divided into three factors