The Meta Analysis of the Effectiveness of the Prevention Programs of Students’ Attitude Change toward Substance Abuse in Iran
                        
                        
                        
                        
                         The Comparison of Attention Biases to Opiates in Substance Dependent and Treated Clients of Therapeutic Clinics and Narcotics Anonymous Memberships 
                        
                        
                        
                        
                         The Comparison of Defense Mechanism Styles and Personality Characteristics in Addicts and Healthy Individuals
                        
                        
                        
                        
                         The Study of the Differences of Attention Bias, Executive Functioning, and Reaction Time of Amphetamine Consumers in Comparison of Non Consumers