IRCT20180628040267N1 IRCT 2018-07-28 Shahid Chamran university of Ahvaz Role of Attentional Bias Modification in Addiction Role of Attentional Bias Modification to Drug Related-Stimuli with and without Reinforcement and Punishment in Decreasing Related-Components with Addiction in Abstinent Drug Abusers 2017-09-01 anticipated 60 Complete https://irct.ir/trial/32269 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Individual simple randomization by random numbers table, Blinding description: Participant blinding. N/A Addiction. Intervention 1: Intervention group 1: Attentional bias modification by dot-probe task in 2 consecutive days that each time containing 10 pairs of words and 10 pairs of images, that each stimulus was repeated 4 times, in total 80 trials. Intervention 2: Intervention group 2: Attentional bias modification with reinforcement and punishment by dot-probe task in 2 consecutive days that each time containing 10 pairs of words and 10 pairs of images, that each stimulus was repeated 4 times, in total 80 trials that correct answers were reinforced and wrong answers were punished. Intervention 3: Control group: Dot-probe task placebo in 2 consecutive days that each time containing 10 pairs of words and 10 pairs of images, that each stimulus was repeated 4 times, in total 80 trials and the design of the task was similar to the assessment phase. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is Need to consult with supervisor professors