Inclusion Criteria - AN groups:  Females 6 to 25 years old Diagnostic of AN according to DSM-5 criteria No past or current psychotic disorders No current substance abuse or dependence (excluding tobacco). No current psychiatric medication  Inclusion Criteria - control groups:  Females Age : matched for the AN group No present or past eating disorders No past or current psychotic disorders No current substance abuse or dependence. No current psychiatric medication  Exclusion Criteria for both groups:  age below 16 years and above 25 years, Past or current psychotic disorders, Current substance abuse or dependence (excluding tobacco) Opposition to participation has been expressed.  In addition, for the control group,  Subjects with present or past eating disorders or current mental disorders will be excluded.