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Search Results: 1 - 10 of 2831 matches for " Mehdi Tehrani-Doost "
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Normative Data and Psychometric Properties of the Child Behavior Checklist and Teacher Rating Form in an Iranian Community Sample
Mehdi Tehrani-Doost,Zahra Shahrivar,Bahareh Pakbaz,Azita Rezaie
Iranian Journal of Pediatrics , 2011,
Abstract: Objective:The objective of this study was to determine the normative data and psychometric properties of the parent and teacher rating form of the child behavior checklist (CBCL) in an Iranian community sample. Methods:A sample of 6-12 year old students was randomly selected from ten elementary schools in Tehran, Iran. The parent's and teachers versions of CBCL were accomplished. Clinical interview and the kiddie schedule for affective disorders and schizophrenia - present and lifetime version, Persian version (K-SADS-PL-PV) were used to evaluate the validity and the cut-off point of CBCL and the teacher rating form (TRF). Findings: Among 600 recruited students with mean age of 9.11 years (SD=1.45), 54.16% were girls (n=325). Girls had significantly lower scores in Attention Problems, Delinquent Behavior, Aggressive Behavior, Externalizing and Total Problems than boys (P<0.01). The relation was significant between the CBCL Internalizing and students ages (β=0.124, P=0.002). The Internal consistency, the correlation among the CBCL and TRF scales, and the inter-rater correlations for CBCL/TRF scales were good to high for most indices and subscales. Based on the receiver operating characteristics (ROC) analysis the best convergences were between the CBCL Attention Problems subscale and attention deficit hyperactivity disorder (ADHD) diagnosis, the CBCL Total Problems and any disorders, the CBCL Externalizing and ADHD+ODD diagnosis. The sensitivities and specificities of the CBCL subscales were higher than the TRF except for Externalizing/ADHD+ oppositional defiant disorder (ODD) which was reverse. Conclusion:These results support the multicultural CBCL/TRF findings. CBCL is a useful instrument to consider ADHD and any disorders in community samples.
Normative data and psychometric properties of the parent and teacher versions of the strengths and difficulties questionnaire (SDQ) in an Iranian community sample
Zahra Shahrivar,Mehdi Tehrani-Doost,Bahareh Pakbaz,Azita Rezaie
Journal of Research in Medical Sciences , 2009,
Abstract: BACKGROUND: Strengths and difficulties questionnaire (SDQ) is a widely used instrument for screening mental problems in children and adolescents. The main aim of this study was to evaluate the validity and psychometric properties of this questionnaire in comparison with the children behavior checklist (CBCL) and psychiatric interview. METHODS: The study was done in two stages. At stage one, 600 children aged between 6 and 12 were evaluated using the parent and teacher versions of SDQ and CBCL. At stage two, 25 children with the scores above the cut point reported by the developer of SDQ and 27 children with the score below this point were selected to be interviewed by a child and adolescent psychiatrist according to Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) classification and by another clinician using the K-SADS-PL (Schedule or Affective Disorders and Schizophrenia for School-Age Children- Present and Lifetime Version) as a semi structured interview. RESULTS: The mean scores of SDQ subscales found in this study were comparable to what found in other studies in other countries. The cut-off points of SDQ were almost similar to that of other researches. The internal consistency and concurrent validity of this questionnaire was good. CONCLUSIONS: The current study showed that both parent and teacher versions of SDQ in Persian language can be used as a valid tool in screening the mental problems in children and adolescents. KEYWORDS: SDQ, CBCL, mental problems, children, K-SADS.
Attentional Bias towards Emotional Scenes in Boys with Attention Deficit Hyperactivity Disorder
Ebrahim Pishyareh,Mehdi Tehrani-Doost,Javad Mahmoodi-Gharaie,Anahita Khorrami
Iranian Journal of Psychiatry , 2012,
Abstract: Objective: Children with attention-deficit / hyperactivity disorder (ADHD) react explosively and inappropriately to emotional stimuli. It could be hypothesized that these children have some impairment in attending to emotional cues. Based on this hypothesis, we conducted this study to evaluate visual directions of children with ADHD towards paired emotional scenes.Method: thirty boys between the ages of 6 and 11 years diagnosed with ADHD were compared with 30 age-matched normal boys. All participants were presented paired emotional and neutral scenes in the four following categories: pleasant-neutral; pleasant-unpleasant; unpleasant-neutral; and neutral – neutral. Meanwhile, their visual orientations towards these pictures were evaluated using the eye tracking system. The number and duration of first fixation and duration of first gaze were compared between the two groups using the MANOVA analysis. The performance of each group in different categories was also analyzed using the Friedman test.Results: With regards to duration of first gaze, which is the time taken to fixate on a picture before moving to another picture, ADHD children spent less time on pleasant pictures compared to normal group ,while they were looking at pleasant – neutral and unpleasant – pleasant pairs. The duration of first gaze on unpleasant pictures was higher while children with ADHD were looking at unpleasant – neutral pairs (P<0.01).Conclusion: based on the findings of this study it could be concluded that children with ADHD attend to unpleasant conditions more than normal children which leads to their emotional reactivity.
Executive Dysfunction in Children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD)
Mehdi Tehrani-Doost,Reza Rad Goodarzi,Javad Alaghband-Rad
Iranian Journal of Psychiatry , 2007,
Abstract: "nObjective: The purpose of this study is to compare the executive functions children and adolescents who suffer from attention deficit hyperactivity disorder "n(ADHD) with normal children. "nMethod: Twenty children with ADHD were compared to 19 healthy children terms of some executive functions using the computerized version of Tower London, Continuous Performance Test (CPT), and Stroop Color Test. "nResults: In "Tower of London", the performance of children with ADHD was "nworse than normal children (p<0.05). In Continuous Performance Test, the "ncommission errors in children with ADHD were significantly more than the "nnormal group (p<0.01). In Stroop Test, the time spent to name the colors was "nsignificantly higher in ADHD group. A significant correlation was also found "nbetween the performance of children on Tower of London and CPT (P<0.05). "nConclusions: This study demonstrates that children and adolescents who "nsuffer from ADHD have some impairment of executive functions, particularly "nplanning and inhibition to response, but not in attention.
Visual Memory of Meaningless Shapes in Children and Adolescents with Autism Spectrum Disorders
Maryam Salmanian,Mehdi Tehrani-Doost,Maria Ghanbari-Motlagh,Zahra Shahrivar
Iranian Journal of Psychiatry , 2012,
Abstract: objective: Visual memory is an important cognitive ability, which has been studied in individuals with Autism Spectrum Disorders (ASDs). In such studies meaningful shapes were used more frequently. Since meaningless shapes provide a better assessment of short term visual memory, in this study we used them to evaluate visual memory in children and adolescents with ASDs compared to the normal group.Methods: Four visual memory tests of Cambridge Neuropsychological Test Automated Battery (CANTAB) including Paired Associates Learning (PAL), Pattern Recognition Memory (PRM), Spatial Recognition Memory (SRM) and Delayed Matching to Sample (DMS) were administered to 15 children and adolescents with ASDs (high functioning autism and Asperger syndrome) and to 15 normal participants aged 8 to 17,with IQ of above 70.Results: Individuals with ASDs performed worse than the normal group on visual memory tasks. After eliminating IQ as a covariate, no significant difference was observed between the two groups in terms of visual memory performance.Conclusion: It seems that deficits on visual memory tasks in youths with ASDs could be related to their general intellectual abilities.
Evaluation of Estimating Missed Answers in Conners Adult ADHD Rating Scale (Screening Version)
Farnaz Ghassemi,Mohammad Hassan Moradi,Mehdi Tehrani-Doost,Vahid Abootalebi
Iranian Journal of Psychiatry , 2010,
Abstract: "n Objective: Conners Adult ADHD Rating Scale (CAARS) is among the valid questionnaires for evaluating Attention-Deficit/Hyperactivity Disorder in adults. The aim of this paper is to evaluate the validity of the estimation of missed answers in scoring the screening version of the Conners questionnaire, and to extract its principal components. "n Method: This study was performed on 400 participants. Answer estimation was calculated for each question (assuming the answer was missed), and then a Kruskal-Wallis test was performed to evaluate the difference between the original answer and its estimation. In the next step, principal components of the questionnaire were extracted by means of Principal Component Analysis (PCA). Finally the evaluation of differences in the whole groups was provided using the Multiple Comparison Procedure (MCP). Results: Findings indicated that a significant difference existed between the original and estimated answers for some particular questions. However, the results of MCP showed that this estimation, when evaluated in the whole group, did not show a significant difference with the original value in neither of the questionnaire subscales. The results of PCA revealed that there are eight principal components in the CAARS questionnaire. Conclusion: The obtained results can emphasize the fact that this questionnaire is mainly designed for screening purposes, and this estimation does not change the results of groups when a question is missed randomly. Notwithstanding this finding, more considerations should be paid when the missed question is a critical one.
Delayed Face Recognition in Children and Adolescents with Autism Spectrum Disorders
Mehdi Tehrani-Doost,Maryam Salmanian,Maria Ghanbari-Motlagh,Zahra Shahrivar
Iranian Journal of Psychiatry , 2012,
Abstract: Objective: Children with autism spectrum disorders (ASDs) have great problems in social interactions including face recognition. There are many studies reporting deficits in face memory in individuals with ASDs. On the other hand, some studies indicate that this kind of memory is intact in this group. In the present study, delayed face recognition has been investigated in children and adolescents with ASDs compared to the age and sex matched typically developing group.Methods: In two sessions, Benton Facial Recognition Test was administered to 15 children and adolescents with ASDs (high functioning autism and Asperger syndrome) and to 15 normal participants, ages 8-17 years. In the first condition, the long form of Benton Facial Recognition Test was used without any delay. In the second session, this test was administered with 15 seconds delay after one week. The reaction times and correct responses were measured in both conditions as the dependent variables.Results: Comparison of the reaction times and correct responses in the two groups revealed no significant difference in delayed and non-delayed conditions. Furthermore, no significant difference was observed between the two conditions in ASDs patients when comparing the variables. Although a significant correlation (p<0.05) was found between delayed and non-delayed conditions, it was not significant in the normal group. Moreover, data analysis revealed no significant difference between the two groups in the two conditions when the IQ was considered as covariate. Conclusion: In this study, it was found that the ability to recognize faces in simultaneous and delayed conditions is similar between adolescents with ASDs and their normal counterparts.
EFFECT OF ARCUATE INCISION ON POST-KERATOPLASTY ASTIGMATISM
Mehdi Hosseini Tehrani,*,?Afshin Doost Mohammadi
Acta Medica Iranica , 1995,
Abstract: This work is a report 0/9 cases ofarcuate incision for correction 0/astigmatism, after penetrating keratoplasty. Plannings were based OJJ corneal topography, and the first operation was always arcuate incision alone. 11,e secondary plans were based on refractive errors. The mean of preoperative astigmatism was 6D with the range of5 to 9/). After arcuate incision a/the graft-host interface in the firs' operation, 'he mean reduction ofastigmatism was 3. OS/) with the range 0[0.5- 4.5]). Mean spherical equivalent change was O.16D. Arcuate incision is an appropriate methodfor correction ofastigmatism after PK and can he considered a.s a single procedure for [ow astigmatism, although the results may be unprediaable:
Correlation Among Neuropsychological Tests and Questionnaires in Attention Deficit Hyperactivity Disorder
M Najafi,MR Mohammadi,J Alaghband Raad,M Tehrani Doost
Iranian Journal of Pediatrics , 2005,
Abstract: Background: Current study aimed to assess the possibility of prediction of continuous performance test in primary school children with attention deficit hyperactivity disorder, with parents and teacher reports of inattention, hyperactivity and oppositional behavior. Methods: Fifteen school aged children with Attention Deficit Hyperactivity Disorder without co-morbid psychiatric disorders were selected from Roozbeh child and adolescent psychiatry clinic. Teachers and parent Conners questionnaires, Continuous Performance Test and 4 class dictation scores were registered from each subject. Results: Commission errors were correlated with hyperactivity scale in the parent report (r=-0.50, p<0.05), and with ADHD score (r=-0.49, p<0.05). Omission error was correlated with inattention (r=0.66, p<0.05) and ADHD score (r=0.51, p<0.05) on teachers report. Reaction time was correlated with oppositional (r=0.51, p<0.05) subscale in parents Conners questionnaire. Dictation scores were correlated with inattention on parents report (r=-0.52, p<0.05) and omission on Continuous Performance Test (r=-0.79, p<0.05). Conclusion: Current study reported a significant correlation between neuropsychological tests and questionnaires, in ADHD
Estimation and Comparison of Solar Radiation Intensity by Some Models in a Region of Iran  [PDF]
Abdollah Khalesi Doost, Mozhgan Akhlaghi
Journal of Power and Energy Engineering (JPEE) , 2014, DOI: 10.4236/jpee.2014.24046
Abstract: Due to the increasing explanation of new energy application on a world scale and because of the reduction of environmental pollution arise from usage of solar energy in high potential regions, the necessity of solar radiation measurement in different regions of Iran is obvious. Therefore, in this study, the amount of radiation is measured by Pyranometer from beginning of February to August 2010 in Semnan (The central part of Iran), and it is compared with daily sunny hours, different estimated models of daily radiation such as Angstrom-Pryskat (Montis, Climate classification based on the Terwartha scientific map, using the results of 40 worldwide station, using the results of 9 Synoptic stations in Iran), the Maximum likelihood (using the results of 100 stations in worldwide, using the results of 9 Synoptic station in Iran). Finally, Terwartha scientific map model is proposed because of matching more with measured data on location.
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