Ahmad Abedi; Hamidreza Arizi; Maryam Sharifi
Volume 5, Issue 19 , October 2015, , Pages 35-61
Abstract
In the late decades, specialists have investigated the impact of multiple psychological interventions on treatment of depression disorder. In order to save budget and time, many of such interventions have been provided in groups, reporting significant changes in the experiment groups vis-à-vis ...
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In the late decades, specialists have investigated the impact of multiple psychological interventions on treatment of depression disorder. In order to save budget and time, many of such interventions have been provided in groups, reporting significant changes in the experiment groups vis-à-vis the control groups. Even so, the precise degree of their effect is unknown. This study aims to gather and integrate the results originating from group psychological interventions in treating depression and computing the level of their effect using a meta-analysis. To this end, 41 methodologically acceptable studies were selected and underwent a meta-analysis. The research instrument includes a meta-analysis checklist. The findings suggest that the level of impact of group psychological interventions on improved depression is 0.59 (p<0.001), which was put at 0.42 (p<0.01) in the age-range of children and adolescents, 0.64 (p<0.001) among the adults, and 0.50 (p<0.001) among the elderly. Moreover, the results of moderation analysis suggested the influence of moderating variables in such interventions. According to this meta-analysis, the degree of impact of group psychological interventions on treating depression is high as indicated by Cohen's chart. This level of effect was high among adults and the elderly, while mediocre among children and adolescents. Furthermore, the impact of moderating variables was more in the child and adolescents group than adults and the elderly
Ali tayarani rad; Noorali farrokhi; Esmail keirjoo; Nafiseh sarihi
Volume 5, Issue 19 , October 2015, , Pages 63-79
Abstract
This study deals with the effect of cognitive-behavioral therapy, response prevention and exposure and medicinal treatments on OCD using a meta-analysis and by means of drawing a comparison between such techniques and OCD treatment. The structured review method was adopted for the purpose of selecting ...
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This study deals with the effect of cognitive-behavioral therapy, response prevention and exposure and medicinal treatments on OCD using a meta-analysis and by means of drawing a comparison between such techniques and OCD treatment. The structured review method was adopted for the purpose of selecting the required surveys; therefore, 28 surveys, including master's degree and doctoral theses and local and foreign papers and articles drawing upon the foregoing methods in OCD treatment, were selected as the research sample. The important factor in determining suitability of the studies and surveys was the statistical methods employed for their data analyses. In order to compute effect sizes, the standard difference between means was used. According to the ensuing results, CBT has an effect size of 1.611. Moreover, effect sizes of response prevention and exposure techniques and medicinal treatments were put at 1.59 and 0.617 respectively, suggesting effectiveness of the foregoing treatments. A comparison of efficiency of such therapies and treatments demonstrated, on the other hand, that CBT has the highest level of effect in OCD treatment. Furthermore, medicinal care is less effective than psychological therapies and treatments.
Ali Delavar; Asieh Ebrahimi
Volume 3, Issue 10 , February 2013, , Pages 116-137
Abstract
The aim of this study is to quantitatively combine the theses about the individual and family factors influencing conduct disorder. For this purpose, meta-analysis was used as a statistical technique to identify, collect, combine, and summarize the research findings related to the role of effective factors ...
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The aim of this study is to quantitatively combine the theses about the individual and family factors influencing conduct disorder. For this purpose, meta-analysis was used as a statistical technique to identify, collect, combine, and summarize the research findings related to the role of effective factors on conduct disorder. The population of research included studies that had been done in Iran about effective factors of conduct disorder in children and adolescents, and the sample included all theses done in this field at the universities of Tehran (20 theses). The mean effect size (r) in individual factors was 0.33 in fixed effects model and 0.37 in random effects model while the mean effect size (r) in family factors was 0.05 in fixed effects model and 0.04 in random effects model. According to Cohen's criteria, the effect size of individual factors and family factors were below the average and low, respectively. But, in the investigation of separative effect size of factors, variables social skills, life skills, guilt feel, being a working child, academic achievement, internal-external attributions, planning-organizing ability, attention to class, mental state of parents, their marital satisfaction, their substance abuse and self-esteem were high and significant due to Cohen's standards. Because of the significance of Q statistic which resulted from the heterogeneity of studies, sex, measuring instruments, sampling method, and age variables were entered into the analysis as confounding variables. Z-test of the studies related to individual factors showed that the effect size was significant for all intervening variables. In contrast, z-test of the studies on family factors showed it to be significant only for variables of sex and measuring instruments. Due to the high mean of effect size in variables listed above, researchers and clinicians should consider the importance of these factors in evaluation and treatment of behavioral disorders in children and adolescents. They should also take note of the role of modulators listed above in their future studies.
Ahmad Abedi; Mahboubeh Kiani; Salar Faramarzi; Mojgan Shoushtari; Fereshteh Golshani Monnazah
Volume 2, Issue 7 , February 2012, , Pages 59-83
Abstract
In recent years, experts in the field of obsessive-compulsive disorder are trying to measure and compare the validity and efficiency of psychological interventions and drug therapy. In this regard, a meta-analysis integrating results of different researches demonstrates the effect size of treatments.
This ...
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In recent years, experts in the field of obsessive-compulsive disorder are trying to measure and compare the validity and efficiency of psychological interventions and drug therapy. In this regard, a meta-analysis integrating results of different researches demonstrates the effect size of treatments.
This study aims to study the impact of psychological interventions and drug therapy on reducing symptoms of obsessive-compulsive patients. For this purpose, 40 accepted researches were selected and meta-analysis was performed on them. Research instrument was a checklist of meta-analysis.The effect size of psychological interventions on reducing obsessive-compulsive symptoms was 1/88( p ≤ 0.001) and for drug therapy 1/11 (p ≤ 0.001).
According to Cohen's effect size, psychological interventions and drug therapy have a high impact on reducing symptoms of obsessive-compulsive disorder.