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 ...
Read More
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
