an examination of the factor structure of the psychopathy checklist
an examination of the factor structure of the psychopathy checklist an examination of the factor structure of the psychopathy checklist
Michie (2001) are more closely aligned with traditional definitions of the syndrome. Indeed, early conceptualizations of psychopathy (Cleckley, 1988; Karpman, 1949; McCord & McCord, 1956/1964) do not focus on antisocial behaviour but rather, the interpersonal and affective traits of psychopathy. However, some consider excluding antisocial behaviour from the three-factor model to impact the integrity of the construct of psychopathy. For example, Hare’s (2003) decision to include this additional factor was based on his conceptualization of psychopathy, and he argued that both personality features and antisocial traits are core features of psychopathy. Others have argued that the core feature of psychopathy resides in the personality features and not in antisocial behaviour (Blackburn, 1992; Cleckley, 1988; Lilienfeld, 1994; Skeem & Cooke, 2010; Widiger & Lynam, 1998; Weizmann-Henelius et al., 2010). In a fairly recent analysis, Cooke, Michie, Hart, and Clark (2004) concluded that antisocial behaviour is best viewed as a consequence, rather than a core feature, of psychopathy. Indeed, although most psychopaths can be diagnosed with antisocial personality disorder (APD; American Psychiatric Association, 1994), most individuals with APD are not psychopaths. The same generalization extends to youth with conduct disorder (CD); although most youth with psychopathic traits can be diagnosed with CD, most individuals with CD are not psychopaths. Among the current sample of adolescent females, it appears that it is the arrogant, deceptive interpersonal style, the deficient affective experience, and the impulsive, interpersonal behaviour rather than the antisocial tendencies that underlie the construct of psychopathy. Indeed, this finding that the three-factor model is most suitable for adolescent females is in line with recent research by Weizmann-Henelius et al. (2010) 63
who also concluded that antisocial behaviour is not crucial in female psychopathy. Among their sample of adjudicated adult female homicide offenders, Weizmann- Henelius and colleagues examined both the two- and three-factor models using CFA. Given their conclusion that the three-factor model was the best fitting model among their more serious homicide offender sample, it appears that there may be no difference in which factor model is most appropriate across generally violent and more serious offences such as homicide. However, if it is feasible to obtain access to a large sample of female youth homicide offenders, researchers should aim to determine if this assumption would be supported. Further examination of the correlations between individual items and their factors revealed that the prominent items include item 5: manipulation for personal gain, item 6: lack of remorse, item 7: shallow affect, item 8: callous/lack of empathy, and item 16: failure to accept responsibility for one’s behaviours. This suggests that these are the features that strongly discriminate female youth who exhibit a high degree of psychopathic traits from those exhibiting lesser degrees of psychopathic traits. Indeed, these findings complement the research among adult female offenders. For instance, Salekin and colleagues (Salekin et al., 1997; Salekin et al., 1998) found that psychopathy in females is best conceptualized and assessed in terms of the affective and interpersonal characteristics rather than overt antisocial behaviours. These investigators, among others (Jackson et al., 2002; Vitale, Smith, Brinkley, & Newman, 2002; Warren et al., 2003; Weizmann-Henelius et al., 2010), suggest that affective characteristics such as callousness, unemotionality, and a lack of empathy are more relevant for assessing female psychopathy than are the antisocial criteria. 64
- Page 23 and 24: females. When a model is considered
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- Page 101 and 102: Frick, P. J., Cornell, A. H., Barry
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- Page 105 and 106: Jones, S., Cauffman, E., Miller, J.
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Michie (2001) are more closely aligned with traditional definitions <strong>of</strong> <strong>the</strong> syndrome.<br />
Indeed, early conceptualizations <strong>of</strong> <strong>psychopathy</strong> (Cleckley, 1988; Karpm<strong>an</strong>, 1949;<br />
McCord & McCord, 1956/1964) do not focus on <strong>an</strong>tisocial behaviour but ra<strong>the</strong>r, <strong>the</strong><br />
interpersonal <strong>an</strong>d affective traits <strong>of</strong> <strong>psychopathy</strong>. However, some consider excluding<br />
<strong>an</strong>tisocial behaviour from <strong>the</strong> three-<strong>factor</strong> model to impact <strong>the</strong> integrity <strong>of</strong> <strong>the</strong> construct<br />
<strong>of</strong> <strong>psychopathy</strong>. For example, Hare’s (2003) decision to include this additional <strong>factor</strong><br />
was based on his conceptualization <strong>of</strong> <strong>psychopathy</strong>, <strong>an</strong>d he argued that both<br />
personality features <strong>an</strong>d <strong>an</strong>tisocial traits are core features <strong>of</strong> <strong>psychopathy</strong>. O<strong>the</strong>rs have<br />
argued that <strong>the</strong> core feature <strong>of</strong> <strong>psychopathy</strong> resides in <strong>the</strong> personality features <strong>an</strong>d not<br />
in <strong>an</strong>tisocial behaviour (Blackburn, 1992; Cleckley, 1988; Lilienfeld, 1994; Skeem &<br />
Cooke, 2010; Widiger & Lynam, 1998; Weizm<strong>an</strong>n-Henelius et al., 2010). In a fairly<br />
recent <strong>an</strong>alysis, Cooke, Michie, Hart, <strong>an</strong>d Clark (2004) concluded that <strong>an</strong>tisocial<br />
behaviour is best viewed as a consequence, ra<strong>the</strong>r th<strong>an</strong> a core feature, <strong>of</strong> <strong>psychopathy</strong>.<br />
Indeed, although most psychopaths c<strong>an</strong> be diagnosed with <strong>an</strong>tisocial personality<br />
disorder (APD; Americ<strong>an</strong> Psychiatric Association, 1994), most individuals with APD are<br />
not psychopaths. The same generalization extends to youth with conduct disorder (CD);<br />
although most youth with psychopathic traits c<strong>an</strong> be diagnosed with CD, most<br />
individuals with CD are not psychopaths.<br />
Among <strong>the</strong> current sample <strong>of</strong> adolescent females, it appears that it is <strong>the</strong> arrog<strong>an</strong>t,<br />
deceptive interpersonal style, <strong>the</strong> deficient affective experience, <strong>an</strong>d <strong>the</strong> impulsive,<br />
interpersonal behaviour ra<strong>the</strong>r th<strong>an</strong> <strong>the</strong> <strong>an</strong>tisocial tendencies that underlie <strong>the</strong> construct<br />
<strong>of</strong> <strong>psychopathy</strong>. Indeed, this finding that <strong>the</strong> three-<strong>factor</strong> model is most suitable for<br />
adolescent females is in line with recent research by Weizm<strong>an</strong>n-Henelius et al. (2010)<br />
63