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Interdiction: To affect the quality of life of people such as happiness and enjoyment of life, considering the importance of aging and psychological issues of the elderly, this study aims to investigate the effect of group training based on positive psychology on happiness, quality of life of the elderly Shiraz was done.
Methods: This study was a quasi-experimental study in which the study population consisted of all elderly people living in elderly care centers in Shiraz. 60 people were selected by cluster random sampling and replaced in two experimental and control groups. The experimental group received 8 sessions of 120 minutes for 2 months based on positive psychology training. The data collection tool of the Oxford Happiness Questionnaire was WHOQOL-BREF quality of life. After the end of the post-test sessions and 1 month later, follow-up was performed. To analyze the data, descriptive and analytical tests such as analysis of variance test for repeated measures were used with SPSS software version 21.
Results: Mean and standard deviation of happiness, quality of life in the experimental group after the study and follow-up had a statistically significant difference (P <0.05). However, no significant change was observed in the control group. Also, comparing the mean and standard deviation of happiness, quality of life between the experimental and control groups after the study and follow-up had a statistically significant difference (P <0.05).
Conclusion: Positive psychology training is effective in increasing the happiness and quality of life of the elderly people in elderly care centers. 
 

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Introduction: Hopefulness and happiness can affect the quality of life of people, especially the elderly. Since positivist psychology creates a wide range of strategies to increase happiness, hopefulness, and other positive emotions, so considering the importance of aging and the psychological issues of the elderly, the aim of this study was to investigate the effectiveness of positive psychology of happiness and hopefulness of elderly people in elderly care centers.
Methods: This study was an experimental study in which the study population consisted of all the elderly people in elderly care centers. Among the elderly care centers in Shiraz, 60 people were selected by cluster random sampling and replaced in two experimental (30) and control (30) groups. The experimental group received 8 sessions of 120 minutes for 2 months based on positive psychology training and the control group did not receive any training during this period. The Oxford Happiness and Schnyder Hope Questionnaire was used to collect data. After the meetings, post-test and follow-up were performed 1 month later. For data analysis, SPSS version 21 was used.
 Results: The results showed that the mean and standard deviation of happiness and hopefulness respectively (33.43±4.36) - (42.93 ±3.12), (46.36 ± 3.78) - (51.66 ± 1.98) there was a statistically significant difference in the experimental group before and after the study (P <0.05). However, no significant change was observed in the control group. Also, the comparison of the mean and standard deviation of happiness and hopefulness between the two groups of test and control after the study and follow-up had a statistically significant difference (P <0.05).
Conclusions: Findings of this study showed that positive psychology can promote happiness and hopefuness in the elderly.