Reliability and validity of the Persian version of the Children's Chronotype Questionnaire in school and preschool-aged children (CCTQ).

Chronotype refers to individual differences in the circadian phase that affect a person's biological and psychological functioning. One of the most useful tools for measuring chronotype in children aged 4 - 11 years is the Children's Chronotype Questionnaire (CCTQ). Therefore, due to the importance of measuring chronotype in children and also the lack of a standard scale in Iran, this study aimed to examine the reliability and validity of the Persian version of this questionnaire for children.

Validity of the Persian version of the Munich ChronoType Questionnaire (MCTQ).

Purpose: Currently, the most useful questionnaire for determining the chronotype is the Munich ChronoType Questionnaire (MCTQ). It determines chronotype based on sleep-wake behavior on workdays and work-free days and uses the mid-sleep time on free days (MSF), corrected for accumulated sleep debt over the work week to classify chronotype (MSFsc). Our study aimed at validating Persian version of the MCTQ.

Investigating the role of attachment styles, dysfunctional attitudes, and spirituality in predicting membership in addicted and non-addicted groups.

Drug addiction as a biological, psychological, and social issue affects all dimensions of one's life. The purpose of this study was to determine the role of attachment styles, dysfunctional attitudes, and spirituality in predicting membership in addicted and non-addicted groups. This was a cross-sectional study conducted on 60 addicted people and 60 non-addicted people.

Treatment of premenstrual syndrome: Appraising the effectiveness of cognitive behavioral therapy in addition to calcium supplement plus vitamin D.

Premenstrual syndrome (PMS) consists of repetitious physical and psychological symptoms. The symptoms occur during the luteal phase of the menstrual period and cease when the menstrual period starts. This study included pre-test and post-test experiments between a control group and a test group.