فصلنامه روانشناسی شناختی

The present research aims at comparing the effectiveness of Cognitive Behavioral Therapy (CBT) and Behavioral Activation Therapy (BAT) in the improvement of cognitive functions (working memory and simple reaction time) in the heroin abusers in Afghanistan.
To this end, through a semi-experimental design including two groups with pre test and post test, 30 heroine abusers referring to the abstinence center of Universal Kabul Physicians were selected by the availability sampling and were then divided into the two groups of experimental 1 (CBT) and expeerimental2 (BAT).  Both groups were first administered the Working Memory Inventory, one of the subscales of Wexler Memory Test (the third edition) and the Stroop software to be evaluated on the working memory and the reaction time. Then the experimental group1 was administered cognitive behavioral therapy and the experimental group2 was administered behavioral activation therapy within 10 sessions of group therapy.
The analysis of the findings indicates that there is a significant difference between the two groups in terms of working memory and simple reaction time. The findings indicate that behavioral –cognitive therapy is more effective in the improvement of working memory and the behavioral activation therapy is more effective in the decrease of the reaction time of heroine abusers. Therefore, both therapy methods are applicable in the improvement of cognitive functions for heroine abusers.  
 

The Purpose of this study was investigating the effects of the emotion elicitation on the enhancement of the implicit motor memory. To achieve this goal, of the students of Kharazmi University, 40 undergraduate students (20 male and 20 female students), who were accessible, were selected, and then they were divided randomly into two emotional and neutral groups: in each group there was 10 men and 10 women. Serial color matching task was considered for this study. The experiment included two periods: acquisition and remembering period. In the acquisition period, all groups practiced the task for six blocks of 150 trials with the repetitive and random frequency. During the acquisition period, the emotion of a group was aroused by the method of manipulating failure while the other group was in a neutral situation. During the experiment, the changes occurred in the density of the salivary cortisol and anxiety was measured. The Results showed that increasing the emotion of the task could increase the density of the salivary cortisol and anxiety. Furthermore, while the neutral group had no enhancement in SCRT learning during the 24 hours, the emotional group showed substantial enhancement during the same period of time.  

The objective of the current research is to compare the function of declarative memory among war veterans who are suffering from PTSD ,war veterans who are not suffering from PTSD and normal people without any war experience the research has also aimed at studying and comparing the influence of the modifying role of meta cognition on the function of declarative memory among the three groups of the study.60 people have been selected and placed in three groups: 20 war veterans suffering from PTSD , chosen by PTSD scales 20 veterans not suffering from PTSD and 20 normal people without any war experience. All three groups were evaluated by WatsonPTSD questionnaires, declarative memory memory interview and delayed recall story) and meta cognition questionnaire .The research hypotheses were tested by multivariate analysis of covariance (MANCOVA). The result have indicated that the function of declarative memory in the three groups without the control of meta cognition moderator is significant , in another word the declarative memory function in war veterans suffering from PTSD is different with the two other groups. It can be also deduced from the results of the research that the declarative memory function by the control of meta cognition modifying  role was not significant this time which indicates the modifying role of meta cognition in decreasing the declarative memory function in war veterans suffering from PTSD in comparison with the two other mentioned groups.

The aim of present Study was The effectiveness of neurocognitive Executive Functions based Play Therapy on improv the ability Response Inhibition,planning-organization and working memory with attention deficit hyperactivity disorder(ADHD: This study was a quasi-experimental design with pre test and post test control group. The study population consisted of children ages 7-12 years old was diagnosed with ADHD in mashhad city, Through Convenience Sampling ,Twenty four student with this disorder in Taha boys' primary school(District 5 Khorasan Razavi) were identified Through introducing the consultants and the SNAP-IV scale and Were randomaly embedded into both control and experimental groups Based on even and odd list. . Both groups were evaluated in two pre and post-test stages With software version of the Tower of London and stroop and Instrumental version Wechsler digit span test. The experimental group participated as a group in 12 sessions of Executive Functions based Play Therapy. The data were analyzed With univariate covariance analysis(ANCOVA). The result showed Executive Functions based Play Therapy significantly decreased in the post test interference score, delay time), and test time) and total time and data span a significant increase in direct and revers.neurological Functions based Play Therapy is recommended be used as a Natural Approach and non-instrumental as an effective psychological intervention in Designing and Presentation treatment protocols of attention deficit/hyperactivity disorder.

In this study was tested the effect of psychology pressures on the serial reaction time task. In this research served 75 right-handed participants, were randomly assigned to three experimental condition (each group consisted of 25 students), including the outcome pressure, monitoring pressure and control groups. First of all groups practice serial reaction time and then test stage was performed by applying pressure conditions for the group. Results repeated measures ANOVA showed that subjects in the monitoring pressure group had decrement performance higher than the other groups in the test phase. Skill failure and success depends in part on how the performance environment influences attention and the extent to which skill execution depends on explicit attentional control.

Anxiety disorders, particularly social phobia, are one of the most important disorders in students requiring attention. This aim study compared Explicit and implicit memory in social phobia people and normal people. In this study with causal – comparative method 50 subjects with social phobia and 50 normal individuals have compared, Subjects were selected Through Screeningfrom between Tabriz university students. Data collected measures of social phobia, the word stem completion test & Note the sign test. Data was analyzed using multivariate analysis of variance. This study showed that in positive and negative words implicit memory in social phobia people and normal subject’s Significant differences between the two groups of people with social phobia and normal people. But are not significant differences between the two groups in explicit memory.

The purpose of the present study was to compare effects of self-focused attention on memory bias in individuals with social anxiety. To do this, 45 male students in Tabriz University were selected to participate in the study who had higher scores in Connor social phobia inventory (SPIN) than its cut point. The sampling method was available. Participants were randomly divided into three groups: two experimental groups and one control group. All the subjects were presented the emotionally words to recall. During the experiment, one group received the false feedback of increased self-focused attention, and the other group received the false feedback of decreased self-focused attention. The control group received non-relevant feedback. Next, previous emotional words were presented with a series of other words for subjects to recognize. Using signal detection theory, response bias (ß) and response sensitivity (d'), were calculated for the recognition of emotional words. The data was analyzed by MANOVA. The results showed that there is significant difference in response sensitivity among three groups, but no significant difference in response bias was seen among the groups. Based on the findings, sensitivity of people with social anxiety in dealing with stressful situations and negative social and also individual memory bias were confirmed.  

Aim of this research was exploring effect of transcranial direct current stimulation (TDCS) on working memory (WM) in dorsolateral prefrontal cortex (DLPFC) region in healthy people.The method used in this research was experimental with random assignment and control group. The population was male students of Kharazmi university in range of 18 to 23 years old. Thirty participant undertook three experimental sessions in which they received 15 minutes of  2 mA anodal TDCS or sham TDCS. After and before stimulation participant performed n-back task to measure reaction time and correct answers. After analysis of covariance there was significant  statistically changing in reaction time and correct answers.The results shows that anodal stimulation reduced reaction time and increased correct answers and it seems made enhance on working memory

The aim of this research was effect of immediate, recent and remote explicit motor memory on reconsolidation process based stabilization and enhancement and retrograde interference. The statistical sample were 72 right-handed young girl. subjects were divided into two groups of  immediate explicit motor  memory (immediate recall, immediate recall + immediate interference), two groups of  recent explicit motor memory(recall after 5h, recall after 5h + Interference delayed after 5h) and two groups of  remote explicit motor  memory (recall after 24h, recall after 24h + Interference delayed after 24h). This research was consisted of two phases of acquisition and retention and alternating serial reaction time and two selection reaction time tasks were used. In the first phase check out reconsolidation based enhancement and in the second phase check out reconsolidation based stabilization and retrograde interference. In the first phase, results showed that for recall groups after 24h and 5h occurred reconsolidation based enhancement. In the second phase, results showed that for  recent (recall after 5h, recall after 5h + Interference delayed after 5h) and remote (recall after 24h, recall after 24h + Interference delayed after 24h) memory groups occurred reconsolidation based stabilization. In group with immediate offline period (immediate recall+ immediate interference) occurred retrograde interference effect.

The aim of this research was to investigate visual-spatial component of working memory and short-term memory in students with learning disorders and comparison with normal students.
30 3rd grade elementary students with learning disorders and 10 3rd grade elementary normal students were selected through multistage random cluster sampling. The instruments were Scale for Identifying Students with Spelling Learning Disability, Keymath Test, Reading Level Diagnostic Test, Wechsler Intelligence Scale for Children (WISC), Clinical Interview and Corsi Blocks Task for assessing visual-spatial component of working memory and short-term memory. Data were analyzed by ANOVA. The results showed that there is a significant difference between students with reading, mathematics and spelling learning disorders and normal students in visual-spatial component of working memory and short-term memory. Students with mathematics disorder had lower performance in these components.  Students with learning disorders particularlymathematics disorder had deficits in visual-spatial component of working memory and short-term memory. This problem should be assessed in order to plan appropriate interventions.
 

The aim of the present study was to investigate the amount of performance in working memory, and also comparing the dimensions of behavioral activation system (BAS) and behavioral inhibition system (BIS) in different levels of stress. For this purpose, first, 560 persons of high school adolescent students (including boys and girls) of Hamadan's schools were selected through a multistage cluster sampling. After the initial data analysis, 87 of them, based on final score distribution (Z Standard) were chosen. Finally, in order to test the hypothesis of this study, participants were have studied to measure working memory and behavioral inhibition and behavioral activation systems. The collected data were analyzed using a Multivariate analysis of variance, ANOVA and post hoc tests. Results showed that there is no significant interaction between gender and stress variables considering the working memory and behavioral inhibition and activation system. On the other hand, results showed that high stress levels can lead to a decline in working memory function and participants with high levels of stress were also at higher level in terms of activity of behavioral activation system (BAS) and behavioral inhibition system (BIS).

Since working memory capacity (WMC) predicts individual differences in the wide range of abilities, this experiment tested the effect of WMC on time perception in preschool children.
At first, 108 children’s working memory capacity were measured by CANTAB tests and then 21 children with high working memory capacity and 20 children with low working memory capacity were assigned. Then, both groups performed two reproduction tasks they instructed to reproduce 700 and 3000 millisecond intervals in mono task, and to reproduce 3000 ms with a performing concurrent non-temporal task as a dual task. Data analyzed by mixed design ANOVA and post hoc tests. Results showed that in mono task, accuracy of high WMC was better than the low WMC group. In dual task, although there was no significant difference in the accuracy of reproduction task, children with high WMC had better performance in non-temporal task. Furthermore, children with low WMC were more variable performance than high WMC in all intervals.
 

The purpose of this study was to examine the effect of different recall distance‌s on explicit motor memory consolidation. Thirty Six students were randomly divided into three groups with distance of immediate, 6, and 24 hours in recall test. This research consisted of two phases of acquisition and recall. In acquisition period, all groups practiced the task for 15 blocks of 80 trials (five epochs of 400 trails). Then in recall phase, all experimental groups were practiced five blocks of  80 trials (one epoch of 400 trails). Also, all groups practiced the alternating serial reaction time task in each epoch. Data were analyzed with using the ANOVA repeated measure. Results showed that in acquisition phase the group main effect and interaction effect between group and epoch were not significant. But epoch main effect was significant and practice lead to inducing sequence reaction time in third epoch related to other epochs. In recall phase, the epoch main effect and interactive effect between group and epoch were significant, but group main effect was not significant. Results in Duncan Post Hoc showed that only group with 24h off line periods, in recall test, had the better performance than acquisition phase.  Practice in group with 24h offline lead to decrease the reaction time than other group .Our Results indicated that 24h offline period for recall test is better time for optimal performance.
 
 

The purpose of present study is determining semantic network for selected Persian words and designing false memory scale (examination) based on it. This present research is cross sectional studies. In this research, two studies were designed. In the first study, selected word presented to 30 individuals and they should write down related word with free association. Key words (Critical Lure) selected from Roediger Mc Dermot (1995) in false memory scale. In the second study, list of words presented Without key words to 80 participants and recall and recognition of words were measured. Descriptive statistics and Pearson correlation test was used for analysis. Findings show that recall and recognition were significantly correlated (P< 0/001). Key words recall and list word recall are significantly correlated (r=0/66). Recall and recognition are significantly correlated (r= 0/41). Participants recall 19% and recognize 51% of words. Present study prepare word list for false memory test that can be used for study false memory in Persian language.

The present research aims to compare the cognitive performance of the adolescents suffering from MDD and PTSD in the working memory and information processing. the selected sample in this casual-comparative study included 15 MDD patients, 15 youth PTSD subjects and 15 normal subjects who were matched by age, IQ, sex as well as social and economic status variables. The tool package employed in this investigation comprised child depression inventory (CDI), State-Trait Anxiety Inventory, Impact of Event Scale (IES-R), Wechsler’s Memory and Intelligence Test, and The Information Processing Index Test. Findings were analyzed using the ANOVA, MANOVA analysis statistical method.as indicated by our result, in the verbal memory there is a significant difference between groups of depression and PTSD and between depressed and normal subjects. in the reverse spatial working memory there are significant differences between normal and PTSD. in the visual memory and information processing, the significant difference is between normal and both PTSD and depressed.The findings of this study confirm the disorders of working memory and speed of information processing in adolescents with depression and post-traumatic stress disorder. 

The purpose of this study was to determine the effects of goal setting on declarative memory performance in tasks with different cognitive loads. 60 female students were selected randomly and divided into short-term goals, long-term goals with high and low cognitive loads and the control groups. For this purpose, the Petersburg sleep quality questionnaire, Goldberg mental health questionnaire, inventory cognitive function, Annette handedness questionnaire, and Stroop software (task  with high cognitive load) and color matching chain (task with low cognitive load) were used. All groups practiced four training sessions in four days based on type of goal setting instructions. The retention test was performed 24 hours after the acquisition phase. Data were analyzed using the factorial repeated measures ANOVA (acquisition phase), two-way analysis of variance, one way analysis of variance and Bonferroni post hoc test (retention test). Results showed significant differences among experimental groups in the acquisition phase (P<0.05). The short term goals group performed better than the other groups in the retention test and task with high cognitive load (stroop task). Also, the short term goals group had better performance than control group in the low cognitive load task (color matching task chain). Furthermore, comparing the groups in tasks with high and low cognitive loads in the retention test showed that the short and long term goals groups in task with high cognitive load performed better than the short and long term goals groups in task with low cognitive load. Thus, the results indicate that goal setting instructions are more effective in task with high cognitive load.

The failures of memory function in post-traumatic stress disorder and its relationship with severity of symptoms need to take new approaches to improve the memory performance in patients. The aim of this study was to investigate the Effectiveness of emotional working memory Training on improvement memory in adolescents with Post- Traumatic Stress Disorder (PTSD). For this purpose, 4 adolescents (M: 2 F: 2) were selected available sampling by using 2 instruments (SCID-I) & (IES-R) The selected people– one by one were under emotional working memory training during 20 sessions. All people were assessed during three stages (pre-training, post- training and 2 month follow up) by children' Wechsler Digit Span Test (direct and reverse). Data were analyzed using the indices for trend changes, slope and the visual inspection of the charts; recovery percent index and effect size were used to determine the clinical significance. The results showed that emotional working memory training lead to increase in ability of participants in memory from pretest to follow up who suffering from Post- Traumatic Stress Disorders. Regarding the current study, it can be said that emotional working memory training is an appropriate choice for increase in memory in adolescents suffering from Post- Traumatic Stress Disorder