Results Procedure Conclusions Goals Results

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assessment modality that combines eye-‐tracking and penile plethysmography (PPG). Dominique Tro er, Ph. D.1 Mathieu Goye e, Ph. D.2 Joanne-‐L. Rouleau, ...
Deviant  sexual  interests  assessment:  Op2mizing  classifica2on  accuracy     1 2 3 1 3 Dominique  Tro]er,  Ph.  D.      Mathieu  Goye`e,  Ph.  D.      Joanne-­‐L.  Rouleau,  Ph.  D.      Patrice  Renaud,  Ph.  D.      Shawn  M.-­‐Lévesque    

Université  du  Québec  en  Outaouais1;  Université  de  Sherbrooke2;  Université  de  Montréal3  

Results  

Goals  

Variables  

1.  Inves*gate  eye-­‐tracking  as  a  method  to   discriminate  child  molesters  from  control  subjects.     2.  Determine  the  classifica*on  accuracy  of  an   assessment  modality  that  combines  eye-­‐tracking   and  penile  plethysmography  (PPG).  

Combined  PPG  w/  CGS  and   eye  tracking   Eye-­‐tracking  variables   PPG  w/  audio  s*muli   PPG  w/  CGS   Reference  line  

PPG  w/  audio  s*muli   AUC  =  0,797  p=  0.000     [95  %  CI  (0.748;  0.978)]   Eye-­‐tracking  variables     AUC  =  0,790  p=  0.001     [95  %  CI  (0.651;  0.928)]  

Procedure   Step  1   • PPG   • Audio  s*muli  

Results  

Step  2   • PPG   • Computer-­‐ generated  s*muli   (CGS)   • Eye-­‐tracking  

PPG  w/  CGS   AUC  =  0,863  p=  0.000     [95  %  CI  (0.657;  0.918)]  

Combined  PPG  w/  CGS  and  eye-­‐ tracking  variables     AUC  =  0,965  p=  0.000     [95  %  CI  (0.922;  1.000)]  

Conclusions   1.  Classifica*on  accuracy  for  eye-­‐tracking  variables  is   sta*s*cally  equivalent  to  PPG  with  audio  s*muli.   2.  Combining  PPG  and  eye-­‐tracking  significantly  op*mizes   sexual  interests  assessment’s  classifica*on  accuracy.