فصلنامه روانشناسی شناختی

Executive function is a set of processes which is responsible for the cognitive, emotional, and behavioral and performance conduct of human being at the time of activities and problem solving. The aim of this study was the comparison of the executive function of the reorganization of thought in adolescents with cannabis abuse. This study is a casual comparison, so 50 adolescents with cannabis abuse who lived in Ahwaz’ juvenile institution and were between the age of 15 and 18 were selected and were compared with 50 normal adolescents of a high school in Ahwaz city, as the control group, who were similar to each other in terms of some demographical variables and who were selected through availability sampling. To collect the data, Gestalt test, TOVA test (as a continual performance test) and Vygotsky’s concept formation test were used. The data was analyzed through multivariate analysis of variance (MANOVA). The results showed that the adolescents with a cannabis abuse disorder had weaker performance in the behavior inhibition and reconstruction of thought than the normal adolescents and there was significant difference between these two groups. Generally speaking, considering the results of the study, i.e. the weaker performance of the adolescents with cannabis abuse disorder in executive functions (behavior inhibition and reorganization of thought) than the normal students, it seems that this weakness would lead to the inappropriate social behaviors, problems in decision making, inappropriate judgment, problems with innovation and change, distractibility and problems in various aspects of memory.

The aim of the present study is the predict of worry based on behavioral activation and inhibition systems, cognitive emotion regulation strategies and intolerance of uncertainty in students. In terms of objective, this study is off is study is the fundamental type, and in terms of data collection, it is of the correlation type. For this purpose, 200 students were selected using convenience sampling (available sampling) from Masters students at the Islamic Azad University of Tabriz in 2014-2015 school year. The participants were asked to answer the measures of behavioral activation and inhibition systems (BAS/BIS), Cognitive Emotion Regulation Questionnaire (SERQ), intolerance of uncertainty Scale (IUS) and the Penn state worry Questionnaire (PSWQ). Data were analyzed by the analysis of variance and stepwise regression. Results showed that there was a significant positive correlation between the variables of behavioral inhibition system, negative cognitive emotion regulation strategies, and intolerance of uncertainty in one hand, and worry in another hand (p<0.01), and there was a negative significant relationship between the positive strategies of cognitive emotion regulation and worry (p<0.01). These variables were able to predict 1/54 of the total variance of concern (p<0.001). In addition, the relationship between the behavioral activator system variable and worry was not significant. Worry is related to a variety of negative consequences, including a high degree of emotional reactivity and inefficient regulation styles. Thus, the findings of this study have practical implications in the clinical arena.

Purpose of this research was the effect of meta-cognitive treatment in group method onthought control strategies in addict man under methadone treatment. Among patients treated with methadone during methadone treatment center in Tarighat no of Tehran city on date Bahman to Ordibehesht 1393 ,30 persons were recruited and randomly assigned to two groups an experiment (n = 15) and group controls (n = 15) were assigned. The participants fill the questionnaires for thought control strategies Wells and Davies before training in method of meta-cognitive and after it. To examin the effect of Metacognitive training method, pre-test was subtracted from pos-testand the means of two experimental and control groups were compared using t-test.  The results showed that there was significant differences in thought control strategies between two groups and he mean of the experimental group was lower According to the results about the difference between the control and experimental groups  in receiving cognitive training intervention on  the Addicts' mind control, it seems, this teaching can be effective in meta-cognitive of the addicts and as a result modify their thought control strategies.

Multiple sclerosis (MS) is a demyelinating disease of the CNS that due to cognitive impairment, can reduce the quality of life in these patients. The aim of this study is to evaluate effect of computerized cognitive rehabilitation on prospective & working memory function in Multiple Sclerosis patients. 46 MS patients aged 20–40 who have the inclusion criteria, were randomly assigned to experimental and waiting-list control groups. Experimental group trained for 12 session with a Memory rehabilitation software and waiting-list control group did not receive any intervention and training of this group was postponed after conducting research. Daneman and Carpenter's capacity working memory and Retrospective-Prospective Memory Scale was applied at pretest, posttest, and follow-up. The results of repeated measures ANOVA showed a significant difference between the means of working memory in experimental and waiting-list control groups. Also, the results of the present study indicate that a significant difference between the means of prospective memory in experimental and waiting-list control groups. Moreover, the post-test and follow-up scores in the experimental group was not statistically different. So Computerized cognitive rehabilitation have significant effect on prospective and working memory performance in patients with Multiple sclerosis and it can be used as an effective and helpful method to improve memory performance of these patients.

The present study was conducted with the aim of determining the discrimination role of reinforcement sensitivity theory, emotion regulation processes strategies and cognitive flexibility in discrimination of people with internet addiction. The research design was a two-group diagnostic function. The study population included Internet user students at Imam Khomeini International University in Qazvin (18 to 35 years). Sample selection was done using convenience sampling method. The research sample consisted of 92 participants (46 = Internet addiction, 46 = normal). Data were collected using the Internet addiction inventory, cognitive flexibility inventory, emotion regulation process strategies inventory and Jackson's five-factor scale; and were analyzed using discriminant analysis. The findings showed that reappraisal and cognitive flexibility negatively, and then BAS, BIS and suppression positivey, in order, had the strongest relationship with the present function and discriminated the groups from each other. But the system of FFFS did not have a significant role in the discrimination of the two groups. In general, cognitive flexibility, emotion regulation processes strategies, and BAS and BIS sensitivity are important factors in discrimination people with Internet addiction from normal people.