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Using the CANTAB to investigate cognitive deficits in ASPD Executive functions.

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Presentation on theme: "Using the CANTAB to investigate cognitive deficits in ASPD Executive functions."— Presentation transcript:

1 Using the CANTAB to investigate cognitive deficits in ASPD Executive functions

2 ASPD  Prevalent 1-1.3% in GP 47% in prisons  Poor prognosis  High societal costs  Resistance to treatment

3 Cognitive functions (Lezak et al., 2004)  Executive Volition Planning Purposive action Self-regulation Effective performance

4 Planning & Effective performance  Planning ToL: Barkataki et al. (2005) SOC: Dolan & Park (2002) n-back: Kumari et al. (2006) Porteus mazes: Stevens et al. (2003)  Effective performance C/W Stroop: Barkataki et al. (2005)

5 Self-regulation (1)  Productivity COWAT: Stevens et al. (2003)  Motor regulation Response inhibition  Go/NoGo (Barkataki et al., 2008; Dolan & Park, 2002; Howard et al., 1997; Völlm et al., 2010)  Response delay (Swann et al., 2009)

6 Self-regulation (2)  Cognitive flexibility Response reversal  IED: Dolan & Park (2002) Attentional set-shifting  WCST: Barkataki et al. (2005) & Stevens et al. (2003)  IED: Dolan & Park (2002) Alternating stimuli  TMT-B: Stevens et al. (2003)

7 METHOD

8 Participants  102 male inpatients at the PDS, Arnold Lodge Regional Secure Unit 17 excluded:  IQ<70  History of MMI & TBI ASPD n=52; non-ASPD n=33  AGN & CGT  20 male ancillary staff IQ>70 Free from MMI & TBI Free from current/past substance abuse

9 Measures  Patients: ASPD vs. non-ASPD SADS-L/SCID-I:CV IPDE WAIS-III  Healthy controls MINI Quick Test IPDE Screening questionnaire  Interview if necessary

10 The Executive CANTAB  Planning  Decision-making  Response control  Cognitive flexibility

11 Planning: Stockings of Cambridge (SOC)  Perfect solutions  Mean moves to solution

12 Executive CANTAB  Planning – SOC  Decision-making

13 Decision-making: Cambridge Gambling Task (CGT)  Quality of decision- making  Overall proportion bet

14 Executive  Planning – SOC  Decision-making – CGT  Response control

15 Motor/response control: Inhibition Affective Go/NoGo (AGN)  # Commission errors

16 Executive  Planning – SOC  Decision-making – CGT  Motor/response control – AGN  Cognitive flexibility

17 Cognitive flexibility: Intra/extra-dimensional set-shifting (IED)

18 Cognitive flexibility: Attentional set-shifting (IED)  # Errors Reversal EDS

19 The Executive CANTAB  Planning – SOC  Decision-making – CGT  Motor/response control – AGN & IED  Cognitive flexibility – IED

20 RESULTS

21 Sample characteristics  Groups matched on: IQ Basic education (yrs) Number of PDs other than ASPD Mood stabilisers  Age: non-ASPD>ASPD  SRD: ASPD>non-ASPD  Antidepressants: non-ASPD>ASPD

22 Planning (SOC): Perfect solutions  ASPD & N-ASPD

23 Planning (SOC): Mean moves  ASPD & N-ASPD

24 Decision-making (CGT): Quality of decision-making  ASPD & N-ASPD

25 Decision-making (CGT): Quality of decision-making  ASPD & N-ASPD

26 Response inhibition (AGN): Commission errors  ASPD>HC

27 Response reversal & Attentional set-shifting (IED): # errors  Reversal: ASPD>N-ASPD & HC  EDS: ASPD>HC

28 Results summary  Non-characteristic deficits: Planning  Broadly agreed with Dolan & Park (2002) Quality of decision-making  Characteristic deficits (?): Response inhibition Response reversal & Attentional set-shifting  Some agreement with Dolan & Park (2002)

29 Limitations  Unable to place N-ASPD  Effect of substance abuse  Confounding of offending  Limited power for AGN and particularly CGT

30 THANK YOU


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