yousef dehghani; nozhatozaman moradi
Abstract
Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental ...
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Aim: Decision-making is part of the cognitive control that plays a key role in the evaluation of desires. The present study was performed to investigate the effects of tDCS on the left hemisphere DLPFC brain region in high-risk decision making and risk-taking. Method: The study was a single-blind experimental study performed on 30 healthy adults. In this study, subjects were randomly divided into two experimental and sham groups. In the experimental group, anodal stimulation over the right hemisphere OFC and cathodal stimulation over the left DLPFC was performed at 2 mA. The tasks used were computer versions of Balloon Analogue Risk Task(BART) and Iowa Gambling Task(IGT) for evaluating high-risk decision making and risk-taking. Data were analyzed using a one-way ANCOVA test. Results: Results showed a significant difference between the experimental and control groups in the Bart test(P <0.05) and the impact of the intervention in reducing risky decision making, and also no significant difference between the two groups in the Iowa test(P <0.05). Conclusion: Based on the results, it can be said that tDCS anodic stimulation can be effective in reducing risky decision making.
yousef dehghani; nozhatozaman moradi
Abstract
Introduction: This study was aimed to examine effectiveness of working memory training on inhibition and reading performance of students with dyslexia. Method: This study was semi-experimental pre-test, post-test, and follow-up with control and experimental group. The statistical population consisted ...
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Introduction: This study was aimed to examine effectiveness of working memory training on inhibition and reading performance of students with dyslexia. Method: This study was semi-experimental pre-test, post-test, and follow-up with control and experimental group. The statistical population consisted of 372 third- to fifth-grade male primary students with all kinds of learning disabilities who had been referred by the schools to the Center for Learning Disabilities of Bushehr province’s Department of Education. Of these, using convenience sampling and considering the requirements of the research project, 75 students were short-listed in the first stage, and of these, 40 students were selected and assigned to an experimental group and a control group. The measurement tools consisted of Dyslexia Symptom Checklist, the Clinical Interview, Wechsler Intelligence Scale of Children-Revised, Reading and dyslexia test and Stroop test. The experimental group experienced the working memory training group therapy in 18 sessions of 45 minutes twice a week and the control group did not receive any treatment. For statistical data analysis, variance analysis with repeated measures is used. Results: Findings showed that working memory training has a significant effect on inhibition (pConclusion: Finally, we may conclude that working memory training, as an effective and functional intervention, could be used to improve inhibition and reading performance of students with dyslexia.
