Objective: The purpose of this study was to examine the relationship between the emotional intelligence quotient and health-related quality of life using structural equation modeling.
Methods: A self-administered questionnaire survey was conducted among 1,911 mothers who visited the Health Center for an infant medical examination. A hypothetical model was constructed using variables of the emotional intelligence quotient, social support, coping, parenting stress, and perceived health competence.
Result: There were a total of 1,104 valid responses (57.8%). Significant standardized estimates were obtained, confirming the goodness of fit issues with the model. The emotional intelligence quotient had a strong impact on physical and psychological quality of life, and showed the greatest association with coping. This study differed from previous studies in that, due to the inclusion of social support and explanatory variables in coping, an increase in coping strategies was more highly associated with emotional intelligence quotient levels than with social support.
Conclusion: An enhanced emotional intelligence quotient should be considered a primary objective to promote the health of mothers with infant children.

Purpose: The purpose of this study was to examine the reliability and validity of the behavioral intention scale for end-of-life discussions. Methods: The scale items were developed according to the Theory of Planned Behavior. The drafts of the scale were created by Item-Level Content Validity Index (I-CVI) and a preliminary test. In the main study, we administered a cross-sectional questionnaire on the web to the participants 20–79 years of age (n=860), living in Tokyo and six surrounding prefectures, and a retest one week later (n=665). We examined item analysis, calculation of a reliability coefficient (intraclass correlation coefficient, Cronbach's alpha coefficient), construct validity, and concurrent validity of the scale. Results: Six factors identified by an exploratory factor analysis were; outcome evaluation, perceived power, control beliefs, motivation to comply, normative beliefs, and behavioral beliefs. The alpha coefficient of the overall scale was .96. The effect size that was determined based on known-groups validity and the correlation coefficient determined on the basis of concurrent validity were moderate. Conclusions: The reliability and validity of the scale were generally confirmed.