Emotional Regulation, Impulsivity in Cannabis Its Relation to MRI Brain Structure

"1\. Emotion Regulation Questionnaire (ERQ): A 10-item scale designed to measure respondents' tendency to regulate their emotions in two ways: (1) Cognitive Reappraisal and (2) Expressive Suppression. Respondents answer each item on a 7-point Likert-type scale .~UPPS-P Impulsive Behavior Scale- Short form: The UPPS-P impulsivity scale is a 20-item scale designed to assess five distinct personality traits to impulsive behavior: Negative Urgency, Lack of Perseverance, Lack of Premeditation, Positive Urgency and Sensation Seeking .~Magnetic resonance imaging examination:~The MR examination of brain was done using 1.5T MR scanner (Achieva, Philips Medical Systems, The Netherlands) with a 16 channel head coil without using any sedation."