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Showing 238 results for Type of Study: Research

Raziyeh Sajedi, Samaneh Shojaie, Parvaneh Shamsipour Dehkord, Seyed Mohammad Kazem Vaez Mousavi,
Volume 8, Issue 4 (2-2021)
Abstract

Efforts to further progress in practice and learning have introduced cognitive imagery and action observation. The aim of this study was to investigate the effect of different practice ratios on consolidation the motor memory of girls with cognitive load. This research was a quasi-experimental study with a pretest, acquisition and retention design. The statistical population of the study includes primary school students in the 18th district of Tehran in the academic year of 97-98 who were selected by convenience sampling method. 98 elementary school girl students in the age range of 8-12 years were randomly divided into 10 groups (physical practice, motor imagery, action observation, motor imagery - physical practice and action observation - physical practice) based on inclusion criteria. Were. Demographic, motion imaging (MIQ-R) and motion imaging resolution (VMIQ-2) questionnaires, Strope task and serial color matching task were used to collect information. Participants made an effort in the 1920 acquisition phase and 48 hours later in an 80-block memorial session. To analyze the data, analysis of covariance test 2 (assessment steps: acquisition, retention) × 5 (experimental groups) with repetition on the factor of assessment steps, SPSS software was used. The results of analysis of variance showed that the main effect of practice type and cognitive load type was significant (p <0.05). The results of Bonferroni post hoc test showed that the participants in the practice observation and imaging group with low cognitive load had the best performance and the participants in the practice group with low cognitive load had the weakest performance compared to the other groups. Performing practice in a combination of observation and imaging will lead to better performance in learning and consolidation motor memory.

Shahrzad Moradkhani, Kamran Yazdanbakhsh,
Volume 9, Issue 1 (3-2021)
Abstract

Given the increase in criminal behaviors and the damage they cause in society; it is important to study the psychological factors that make people prone to crime or prevent it from committing. Accordingly, the present study aimed to investigate the mediating role of cognitive executive functions in the relationship between behavioral brain systems with cognitive emotion regulation in prisoner men. The research was descriptive-correlational. The study population included all men who were serving their sentences in Kermanshah Central Prison in 1398, from which 300 people were selected by convenience sampling method. The participants completed the Gray-Wilson Personality Questionnaire (GWPQ-28), Cognitive Emotion Regulation Questionnaire (CERQ), and Cognitive Ability Questionnaire (Nejati, 2013). Data were analyzed using Pearson correlation and structural equations using SPSS22 and AMOS24. Findings showed that path analysis models of the relationship between behavioral brain systems and cognitive emotion regulation with executive functions' mediating role have a good fit. The results emphasize the importance of behavioral brain systems and executive functions in cognitive emotion regulation. As a result, paying attention to executive functions in controlling and cognitively regulating emotions and promoting them can be effective in reducing criminal behaviors.

Masoud Dehghan, Nima Moshtaghi,
Volume 9, Issue 1 (3-2021)
Abstract

The present study aimed at investigating the topic shift in the discourse of the senile dementia of the Alzheimer's type based on neurolinguistics perspective within the framework of Crow's model (1983). The methodological nature of this quantitative research was casual-comparative; and the data include 20 subjects (10 senile dementia of the Alzheimer's type subjects and 10 normal elderly subjects). To determine the severity of dementia, the Clinical Dementia Rating Scale was administered and subjects with a score (0.5 ≤ X< 2) were selected. Then, they answered the questions about their families, daily activities. Moreover, the conversations were recorded and transcribed. The utterances were coded according to Dijkstra et al. model (2004), and they were categorized according to Crow's model (1983). Finally, the statistic results obtained using of independent t-test. The findings indicate significantly different Topic Shift (P=0.001) and Topic Maintenance (P=0.01) in the discourse of both groups that occurred Within Turn and Across Turn. The results showed that topic shift has much more frequency in the senile dementia of the Alzheimer's type subjects’ discourse occurring more often Within Turn. Also, Topic Initiation was Type of Shift having the most frequency, and also the most important Reason for Shift was related to Failure to Continue.

Fatemeh Tayeby, Najmeh Hamid, Morteza Omidian,
Volume 9, Issue 1 (3-2021)
Abstract

Due to the prevalence of depression and the existence of deficites in the executive functions of depressed people, it seems necessary to study and evaluate various treatment methods in the field of cognitive functions, including working memory. The aim of this study was to investigate the effectiveness of Captain Log cognitive rehabilitation software on auditory and spatial working memory of people with depressive symptoms in Ahvaz. The method of this research was quasi-experimental with pre-test, post-test design and a control group. The population of this study was thirty individuals with depressive symptoms referring to psychology and psychiatric centers in Ahvaz and the web pages of these centers in 2009-2010. Participants were completed the Beck Depression Inventory (BDI-II) and the Wechsler Active Memory Profile Test-Third Edition). Participants were matched based on gender, age, education, socio-economic status, lack of acute physical, psychological diseases and they were randomly allocated into an experimental group and a control group. The experimental group recieved cognitive rehabilitation for 10 sessions using Captain Log software, while the control group did not receive any intervention. After the intervention and post-test, the data were analyzed using Multivariate Analysis of Variance (MANOVA) and Analysis of Covariance (ANCOVA) by SPSS-24. The results showed that there was a significant difference between the experimental and control groups in terms of auditory and spatial working memory (p < .001). The rate of auditory and spatial active memory in the experimental group were significantly increased in comparison with the pre-test scores and the scores of the control group. It can be concluded that Captain Log cognitive rehabilitation software has a significant effect on the auditory and spatial working memory of depressed people (p < .001). Therefore, the Captan Log cognitive rehabilitation software can be used to effectively increase the auditory and spatial working memory of people with depressive symptoms.

Saeideh Zahed, Fariborz Dortaj, Hasan Asadzadeh, Parvin Kadivar, Noorali Farokhi,
Volume 9, Issue 1 (3-2021)
Abstract

Cognitive Load Theory is one of the most powerful research frameworks in educational research. The main concern within this framework is to develop a proper instrument to measure cognitive load. Hence, the goal of this research was to investigate the reliability and validity of the Cognitive Load Questionnaire designed by Kelpsch, Schmitz and Seufert (2017). This questionnaire was administered to 206 seventh- and eighth-grade female students, in which they rated the amount of intrinsic, germane, and extraneous load of various learning tasks on a 7-point Likert scale. The reliability and validity of the questionnaire were examined and confirmed through Cronbach's alpha coefficient and t-test in which the quality of individuals' answers in different tasks were compared together. In addition, confirmatory factor analysis was performed using LISREL 8.80, to investigate factor structure of the questionnaire. The results showed that the questionnaire has desirable reliability and validity to measure different types of cognitive load. The results of confirmatory factor analysis also revealed a three-factor structural model whose fit indices suggested a desirable fit with the data, thus corroborating the three-factor structure of the cognitive load questionnaire. Therefore, this questionnaire can be a proper measure to assess different types of cognitive load in seventh and eighth grade students.

Zhaleh Kiani, Alireza Moradi, Parvin Kadivar, Hamid Reza Hasanabadi, Hadi Keramati, Mohammad Effatpanah,
Volume 9, Issue 1 (3-2021)
Abstract

Mindfulness is one of the effective interventions in improving executive functions. Although this intervention is well documented for adults, but it is less addressed for children, while children with attention deficit / hyperactivity disorder Executive functions are problematic. The purpose of this study is to Designing, developing and validating a psycho-educational program of empowerment based on mindfulness-cognitive for reduce behavioral symptoms and improve executive function in children with attention deficit / hyperactivity disorder. The present study is of the fundamental type, which is in two parts, In the first for designing and development stages was a descriptive - analytic method with a configurative synthesis approach In the second stage For program validation, along with the use of face validity method, content validity method was used quantitatively and Qualitatively method with a panel of 10 experts and Content Validity Ratio (CVR) and Content Validity Index (CVI). The minimum and maximum CVRs for each item or component of the program were calculated as 0/73 and 1, respectively. Also the minimum and maximum CVIs for each item or component of the program were calculated as 0/80 and 1, respectively. Finally, the average content validity index (S-CVI/Ave) for the entire program was calculated as 0/91. This research leads to the preparation of an educational-therapeutic program in three sections: 1- basics, 2- external awareness and 3- internal awareness, which includes the sub-elements of strengthening attention, concentration, awareness of emotions, thoughts, tasks, purpose and impulses. Be. This educational-therapeutic program includes 16 sessions for children and 3 sessions for parents, 120 cards and 20 educational worksheets. The psycho educational program of empowerment based on mindfulness- cognitive for  reduce behavioral symptoms and improve executive function in children with attention deficit / hyperactivity disorder has appropriate face and content validity, and has a useful validity for educational, clinical and research uses.

Dr Susan Alizadeh Fard, Mis Azita Kharaman, Dr Hossein Zare,
Volume 9, Issue 1 (3-2021)
Abstract

Human has always been interested in thinking about nature of self, and knowing its dimensions. In fact, different information is forming psychological and embodied representations through cognitive processes. The result of these representations is two types of mental sense of self: body self-awareness, and psychological self-awareness. Sometimes, the real representation makes mistake and, under certain circumstances, experiences an artificial hand as a real one. This study was designed and conducted to predicting rubber hand illusion based on embodied and psychological self-awareness. The statistical population consisted of all male and female students living in Tehran. A sample of 167 people (96 females and 71 males) were selected by convenience sampling method. Research instruments included the self-consciousness scale (Fenigstein et al., 1975), and embodied sense of self scale (Asai et al., 2016) as well as performing Rubber hand illusion testing. Data were analyzed by using SPSS and AMOS software. The results of path analysis showed that the dimensions of psychological and embodied self-awareness have a negative and significant direct relationship with rubber hand illusion. Also private self-awareness mediated by embodied ownership and agency awareness; and public self-awareness mediated by embodied ownership awareness are negatively and indirectly related to rubber hand illusion. These results indicate the role of different dimensions of consciousness in body representations and have created new insights into the boundaries of knowledge related to these concepts.

Hossein Matoori,
Volume 9, Issue 2 (8-2021)
Abstract

In this research, the horizontal and vertical direction of the time line in the minds of Persian speakers is examined from the perspective of Lakoff and Johnson conceptual metaphors. The mental timeline as an abstract concept according to our cognitive experiences and embodied mind may be conceptualized metaphorically under the influence of concrete concepts of space in our mind. In this research, a type of experimental experiment in the form of arranging colored cubes of time is used in different dimensions and possible directions in the concepts of the days of the week, including Saturday, Sunday, and Monday; the three main meals that include breakfast, lunch and dinner; and the concept of time that includes the yesterday, today and tomorrow. A total of 45 male and female employees between the age of 27 and 45 from the Islamic Azad University of Khorramshahr-Persian Gulf International Branch participated in this experiment. Percentage and average frequency of sorting colored cubes in the three concepts of time showed that, respectively, the horizontal lateral axes from right to left are adopted from the writing direction of Persian language with 45.6% as the first; the horizontal axis of the back-front paradigm is taken from the walking and looking direction, and linguistic metaphors, with 25.7% as the second; and the horizontal  axis left to right taken from the writing direction of numbers and mathematics with 14.6% are considered as the third adopted sources of abstract concepts of time in Persian. The results show that in the minds of Persian speakers, the cognitive experience for writing the language due to repetition and sensory-motor experience is still represented as the most dominant pattern, and after this pattern walking and looking forward has a considerable affects on the representation of the direction of mental timeline.

Masoumeh Soltanipour, Akram Parand, Peyman Hasani Abharian, Saeed Sharifyazdi,
Volume 9, Issue 2 (8-2021)
Abstract

the children with attention deficit/hyperactivity disorder (ADHD)  in executive functions such as kinds of attention, response inhibition and response rate cope with problems which need therapeutic and educational plans to improve. From this kind of methods, cognitive rehabilitation is a new approach, which its effectiveness has studied in various cases. The aim of this study is to find out the effect of Computer- assisted cognitive rehabilitation on improving of executive function of students with attention deficit/hyperactivity disorder. This study is a kind of quasi-experimental design with pre-test / post-test and control groups. 30 students come down with attention deficit/hyperactivity disorder (ADHD) selected by the available sampling method and base on criteria for entering of referrals to medical centers. 15 students were in experimental groups and others in control group. Experimental group have received training and computer-assisted Cognitive Rehabilitation for 15 Sessions. the integrated visual and auditory (IVA) continuous performance test, raven's progressive matrices test for children 5 to 9 years, SNAP-IV rating scale the Swanson questionnaire and Captain's­Log Cognitive Rehabilitation software. Data has analyzed by analyze of covariance method. the results of this study revealed that improving executive functions, response inhibition variables, sustain attention, self-centered attention and selective attention were caused by Cognitive Rehabilitation by computer game (P=0.05). But, significant Improvement was not observed in two variables, response rate and divided attention. (P=0.05). Ognitive Rehabilitation by Captain's­Log computer game affected on improving of executive functions of students with attention deficit/hyperactivity disorder so if the children with disorder being train under Cognitive computer software, executive functions of them will improve on response inhibition components, self-centered attention, selective attention and sustain attention.

Shamsi Rezaei, Majid Youseefi-Afrashteh, Zekrollah Morovati,
Volume 9, Issue 2 (8-2021)
Abstract

The main purpose of this study was to determine the effect of computer cognitive empowerment on the attentional functions, concentration and cognitive effort of the elderly. Metods This study was a quasi-experimental study with a pretest-posttest design with a control group. Participants were 30 elderly people who were selected by convenience sampling method and randomly assigned to the experimental and control groups (Each group includes 15 people). Instruments included Captain's Log cognitive software and D2 test. Data analysis was performed using analysis of covariance. Data analysis using analysis of covariance showed that there was a significant difference between the mean scores of pre-test and post-test in the experimental and control groups (p <0.001). The results of this study show that computer cognitive empowerment can be used as an effective method to improve attention, concentration and cognitive effort in the elderly.

Sooran Rajabi, Mohammad Reza Mowla,
Volume 9, Issue 2 (8-2021)
Abstract

Time perception is one of the important cognitive functions of the brain, and it refers to the mental sense of time by a person. This ability not only affects all human activities but also affects our mood and emotions. The present study was applied in a semi-experimental design with pre-test and post-test for two experimental and control groups. Subjects were 40 men and women (20 males and 20 females), which were selected by available sampling from bachelor's and master's degrees and divided into two peer control and experimental groups based on gender and education. All subjects were tested by production time task of 30 and 60 seconds by chronometer before and after the intervention. The experimental group was exposed to induction of three stages of negative, positive mood, and anxiety state, and the control group were tested by the same method in neutral state. The results of variance analysis with repeated measures in the production time task showed, individuals in positive mood and anxiety estimates time faster than neutral state, and also time perceived faster in positive mood in compare to anxiety state. Furthermore, individuals in the Negative mood perceived time slower than neutral state. Based on the result of this study, it can conclude that people experience time faster in positive mood and anxiety state, while in negative mood, people experience time slower.

Ahmad Borjali, Mohammad Rostami,
Volume 9, Issue 2 (8-2021)
Abstract

Pharmacological treatment of adult with attention deficit with hyperactive disorder (ADHD) has been shown to be successful; however, medication may not normalize executive functions. The present study was assessed the effect of working memory training program on executive functions of adult with ADHD. Sixteen adults with ADHD and 16 healthy adult participated in the study. After a diagnostic and baseline evaluation, 16 adults with ADHD participate in up to 16 sessions of working memory training program and the outcomes are evaluated. Healthy people did not receive any training. Working memory and attention, were examined prior to and following the interventions. Data analysis revealed that the working memory training used in the present study led to significant improvements of various aspects of attention, including focus and sustain attention and capacity of working memory. The findings indicate that working memory training programs can improve working memory performance and have the potential to facilitate attentional functioning in adult with ADHD as well.

Shirin Rezvani, Ali Akbar Sharifi, Hossein Zare,
Volume 9, Issue 2 (8-2021)
Abstract

The aim of this study was to evaluate the effectiveness of cognitive rehabilitation on improving working memory of adolescents with traumatic brain injury. The method of this research was quasi-experimental pre-test-post-test with control and follow-up groups. To conduct this study, 20 adolescents aged 9-18 years with traumatic brain injury referred to medical centers in Sadaf Shahriar (Parandmehr Clinic) were selected by convenience sampling and randomly assigned to two groups of 10 experimental and control. To measure the dependent variable of working memory, Wechsler scale 4 subtests (auditory measurement of working memory) and Benton test (visual-spatial measurement of working memory) were used. The experimental group underwent cognitive rehabilitation intervention (12 sessions of 45 minutes). Analysis of variance with repeated measures was used to analyze the data. The results showed that there was a significant difference between the experimental and control groups in pre-test, post-test and follow-up of working memory performance. The results showed a significant difference between the mean scores of working memory (auditory and visual-spatial measurements) of the experimental group and the control group in the post-test. In addition, there was no significant difference between post-test scores and follow-up in the experimental group, which showed the effect of cognitive rehabilitative perstability on working memory performance in adolescents with brain injury. Therefore, cognitive rehabilitation has a significant effect on improving working memory performance in patients with brain injury and can be used as an effective and useful method to improve working memory performance in adolescents with brain damage.

Ahmad Azhdarloo, Maryam Tabiee, Mohammad Azhdarloo,
Volume 9, Issue 3 (10-2021)
Abstract

Recent neuroimaging studies have shown that main symptoms of Autism Spectrum Disorder (ASD) such as deficits in social communication, speech and repetitive behaviors are associated with abnormalities in neural connectivity. The abnormalities in neural connectivity have been studied by several methods. Among these methods, electroencephalography is an efficient and a non-invasive tool that records brain electrical activity and helps us to gain information about brain neural connectivity and cognitive characters. Therefore, the purpose of this study was to analyze electroencephalogram resting state data to compare brain connectivity (coherence) patterns between children with ASD and typically developing children. The method of this study was descriptive-analytical. The population of the study consisted of all children with ASD (aged 6-13) referred to psychologists in Mehraz Andisheh Clinic in Shiraz. Fifteen children with ASD (boys = 11 and girls = 4) were selected via purposeful sampling method. Moreover, a group of fifteen typically developing children who were matched based on chronological age and gender were recruited. Quantitative Electroencephalography data analyses showed a significant difference between the two groups and indicating hyper connectivity in most frequency bands among children with ASD. Therefore, quantitative electroencephalography patterns of children with ASD indicated an increase in the levels of coherence in delta (p < .05) and theta (p < .05) powers in the prefrontal region, theta (p < .05) and alpha (p < .05) waves in the central region, in theta (p < .001), alpha (p < .001) and beta (p < .001) waves in the occipital region, in addition to delta (p < .001), theta (p < .001) and alpha (p < .001) waves in the temporal region. The findings demonstrated abnormalities in brain connectivity (coherence) patterns of children with ASD which is supported by cortical connectivity theory. Consequently, these findings (hyper connectivity patterns) can be considered as a useful marker to better diagnose ASD. Moreover, changing these patterns may have a positive impact on the treatment of individuals with ASD.

Barzan Soleimani, Kamran Yazdanbakhsh, Khodamorad Momeni,
Volume 9, Issue 3 (10-2021)
Abstract

People with borderline personality disorder experience problems in a variety of cognitive areas, including information processing, decision making, planning, memory, and problem solving. The aim of the study was to modeling the intermediate role of metacognitive awareness on the relationship between overgeneral autobiographical memory and problem solving. The research was fundamental and in terms of implementation method was correlational. The statistical population included all individuals with borderline personality disorder who referred to psychological and psychiatric clinics in Kurdistan province in 1397-98. 300 patients with diagnosis of borderline personality disorder based on clinical interview and willing to participate in the study were selected. They answered the Autobiographical memory test, metacognition awareness questionnaire and social problem solving inventory. Data were analyzed using Amos software. Findings showed that overgeneral autobiographical memory has a direct effect on problem solving skills and metacognitive awareness with coefficients of 0.17 and 0.20, respectively. Also, the direct effect of metacognitive awareness on problem solving was 0.35. Overgeneral Autobiographical memory predicted 4% of the variance of metacognitive awareness, and Overgeneral autobiographical memory with metacognitive awareness predicted 17% of problem-solving changes. On the other hand, the indirect effect of Overgeneral autobiographical memory on problem-solving skills was 0.07, which shows that the indirect effect of Overgeneral autobiographical memory on problem-solving skills is significant. Therefore, it can be concluded that metacognitive awareness acts as a mediator as an observer, which increases the scores of problem-solving skills.

Samira Nasr Abadi, S. M. Hossein Mousavi Nasab, Ghasem Askari Zadeh, Mohsen Shahba,
Volume 9, Issue 3 (10-2021)
Abstract

Executive dysfunction is a hallmark of traumatic brain injury (TBI) and is associated with significant complications. Deficiency in problem-solving, emotion regulation, and attention is one of the most common phenomena after brain injury. This study aimed to evaluate the effectiveness of short-term intervention of dual executive function on problem-solving, emotion regulation, and selective attention in patients with traumatic brain injury. This quasi-experimental design used pre-test and post-test with a control group. Twenty subjects with brain injury were selected with the Purposive sampling method. They were randomly entered into two experimental and control groups (10 in the experimental group and 10 in the control group). After performing the pre-test, the experimental group received the short-term intervention and double executive function in 8 sessions of 90 minutes, while the control group did not receive any intervention. The assessment was performed in two stages of pre-test-post-test using a set of software tests of the Tower of London, Stroop and John and Gross (2003) Emotion Regulation Questionnaire. Analysis of covariance was used to analyze the data. The results showed a significant difference in the mean scores between the experimental group and the control group in all variables after the test. Therefore, it can be concluded that short-term intervention of dual executive function has a significant effect on improving attention, emotion regulation, and problem-solving in people with traumatic brain injury.

Parisa Asadollahi, Mohammad Hosein Salarifar, Laila Talebzadah Shoshtari,
Volume 9, Issue 3 (10-2021)
Abstract

The purpose of this study was to investigate the effectiveness of training metacognitive beliefs and state on working memory of elementary school students. This study was a quasi-experimental study with a pre-test, post-test, follow-up and a control group design. The population consisted of elementary school students in Birjand. Forty-six students in the sixth grade were recruited via convenience sampling method. The participants were allocated to the experimental group (n = 23) and the control group (n = 23). The metacognitive training package was used to teach metacognitive beliefs and state. Moreover, the computer image recognition test (N-Back) was used to evaluate working memory. Data were analyzed using Mann Whitney U, Friedman and Wilcoxon tests. The findings indicated a significant difference between the experimental group and the control group. Furthermore, the experimental group showed higher levels of mean in working memory scores compared to the control group. The results of the follow-up test suggested the lasting effect of the training. According to the results of the present study, it can be concluded that training metacognitive beliefs and state might enhances students’ working memory.

Mrs. Faezeh Daneshmand-Bahman, Dr. Ateke Goshvarpour,
Volume 9, Issue 3 (10-2021)
Abstract

Anxiety is a natural reaction of humans to stress that occurs in the face of various factors. Anxiety is considered as a mental illness if it is excessive and uncontrollable in the form of fear and anxiety. Today, clinicians use certain criteria to diagnose anxiety disorders. This analytical-observational study was aimed at automatically classifying the two levels of anxious and normal by analyzing electroencephalogram signals. In this paper, the DASPS database was used, which contains a 14-channel electroencephalogram of 23 people (13 females and 10 males, mean age 30 years) during anxiety. Anxiety was presented in the form of flooding as actual exposure to the feared stimulus. Based on the results of the Self-Assessment Manikin, data were divided into two groups: (1) normal and low anxiety and (2) moderate and high anxiety. Approximate entropy, fractal dimension, and Lyapunov exponents were extracted from all channels as nonlinear properties. Maximum relevance and minimum redundancy were used to select the best feature to apply to the multilayer perceptron network. To evaluate the performance of the algorithm, different network structures were examined in terms of the number of features and neurons as well as different feature dimensions. Maximum accuracy, precision, f1-score, and sensitivity in 20 repetitions in all cases is equal to 100, and with an increasing number of neurons, the average accuracy increases. The best results were obtained for 5 features and 15 neurons, where the mean accuracy, precision, f1-score, and sensitivity for it were 80%, 92.75%, 84.15%, and 80.58%, respectively. The results of this paper indicated the capability of the proposed algorithm to distinguish anxious people from normal ones.

Dr. Somayeh Daneshvar, Prof. Mohammad Reza Taghavi,
Volume 9, Issue 3 (10-2021)
Abstract

Objective: Working memory executive deficits have a role in maintaining Post-Traumatic Stress Disorder (PTSD) symptoms including flashbacks and reexperiencing. Accordingly, the aim of the present study was to compare the visual and verbal Proactive Interference in trauma-exposed individuals with and without PTSD. 
Method: In this retrospective study, we recruited subjects through the purposive sampling method. We compared 30 survivors of road traffic accidents with PTSD with 30 trauma-exposed individuals without PTSD in terms of visual and verbal Proactive Interference. Measuring tools included the Post-Traumatic Stress Disorder semi-structured Interview for DSM-V, the Beck Depression Inventory-II and the Recent Probes Task. Data were analyzed using mixed repeated-measures analysis of variance (ANOVA) in SPSS-21 software.
Results: Subjects of the PTSD group reported higher levels of visual and verbal Proactive Interference than the control group. Moreover, patients with PTSD indicated higher deficiencies in visual working memory than verbal working memory.
Conclusion: Patients with PTSD show deficiencies in controlling proactive interference that should be taken into consideration through their treatment procedure.
 
Dr Hasan Sabouri Moghadam, Dr Mohamad Ali Nazari, Sedigheh Naghel, Dr Antonino Valessi, Dr Reza Khosroabadi,
Volume 9, Issue 3 (10-2021)
Abstract

Risk preference, the degree of tendency to take risk, has a fundamental role at individual and social health and is divided to risk seeker and risk averse. Therefore, the study of neural corelates of risk preferences is essential at the field of psychology and psychiatry. The current study aimed to examine and compare an ERP component named P300 between subjects with different risk preferences.
Method: 28 people placed in two groups of risk seeker and risk averse (14 each group). Subjects performed simple gambling task. ERP data were processed by MATLAB software and ERPlab. Repeated measurement ANOVA was used to analyze data.
Results: analysis of behavioral data presented that risk seekers selected low risk option more than high risk, but there was no significant difference of reaction time between groups. ERP analysis showed a significant decrease of P300 amplitude in risk seekers compared to risk averse when selecting high risk option. This result shows the importance of the differences in dopaminergic and motivational pathways of risk seekers during reward processing compared to healthy and risk-averse groups. Based on this result, it may be possible to consider the P300 component as a suitable indicator in clinical evaluations.
 

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