Meta Analysis of Psychological Intervention's Effectiveness on the Rate of Depression among Elderly Iranians in 2000-2010

Psychologists and consultants in the recent years have looked for measuring credibility and effectiveness of psychological interventions in the field of depressions among elderly people. In this regard, Meta analysis defines the rate of effect size of psychological interventions by integrating the obtained results from different studies. The present research is trying to determine the effectiveness of the psychological interventions on the elderly people’s depression, by using the researching model of Meta analysis. With attention to the different results about the psychological interaction on elderly depression, it seems that a Meta analysis study with accurate rate of psychological interaction on elderly depression will be helpful. On the other hand, Meta analysis can prepare a clear result about this intervention. This method helps us to examine the hypotheses mentioned in different researches. In this case, 9 psychologically acceptable researches, were selected out of 20 for analysis. The most significant effect (0.58) is related to Sad Hezary et.al and the least amount of effect (0.21) in this research is related to the research of Nemati Dehkordi. The tool in this research was Meta analysis’ check-list The rate the effect is 0.43 (p<0.001). The results showed that according to the Cohen’s table of comprehension of the effective rate, the rate of the psychological interventions’ effectiveness on the elderly depression is evaluated intermediate.