Thesis:

Investigating the effectiveness of mindfulness-based training on stress reduction and sleep quality of adolescents on the threshold of puberty in Sabzevar

The present study was conducted with the aim of investigating the effectiveness of mindfulness-based training on stress reduction and sleep quality of adolescents on the threshold of puberty in Sabzevar city. The current research is a semi-experimental research with a pre-test-post-test design and unequal control group. The statistical population of the present study includes teenagers who studied in the first period of Sabzevar secondary school in 1402-1403. Among these students, 40 students were selected by cluster sampling and these students were randomly divided into two groups of 20 people, control and experiment. One group was given mindfulness training and the control group was not given training. Then a comparison was made between these two groups. The data collection tools include mindfulness intervention sessions based on the educational protocol of Williams, Segal and Teasdell (2002) which were given to the subjects in the form of 8 90-minute sessions, as well as the Levi-Band 1995 stress questionnaire and the Pittsburgh Berman and Kupfer 1989 sleep quality questionnaire. Was. In this research, data was analyzed using SPSS 24 software. Descriptive statistics were used to examine and compare the mean and standard deviation of the variables in the control and experimental groups, and inferential statistics were used to analyze the research hypotheses, which included k-s tests to check the normality of the research variables, covariance assumptions, and covariance tests. The results showed that the mindfulness test generally had asignificant effect on the reduction of stress and sleep quality of adolescents on the threshold of puberty in Sabzevar city, which was a decrease in stress and an increase in sleep quality

Keywords: : mindfulness-based training, stress reduction, sleep quality, adolescents on the threshold of puber