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Development and Validation of the Mood Instability Questionnaire-Trait (MIQ-T).

ABSTRACT: Background and objectives: Mood instability (MI) is a stable trait associated with psychiatric disorders, yet there is a lack of tools to measure MI. The purpose of this study was to develop and validate the Mood Instability Questionnaire-Trait (MIQ-T) to evaluate MI in mood disorder patients. Material and methods: Items were taken from various established questionnaires to create an initial list of MIQ-T questions. Data from 309 psychiatric patients (n = 309; 62 major depressive disorder, 58 bipolar I disorder, and 189 bipolar II disorder) were gathered from their medical records and were utilized in an exploratory factor analysis to clarify the underlying components of MI. Then, anonymous survey data from 288 individuals from the general population were included in the analysis as a comparison group. Associations between MIQ-T and other previously validated clinical instruments for mood disorders were examined to test external validity. Results: The exploratory factor analysis demonstrated that the five-factor structure (Lability, Upward Tendency, Downward Tendency, Childhood Instability, and Seasonality) of 59 items was the most appropriate with clear, cohesive features. MIQ-T exhibited high internal consistency (α = 0.96) and moderate to strong correlations with other previously validated clinical instruments, which were consistent with theoretical predictions, providing evidence of criterion validity. Short forms were also created to address the high internal consistency value, which can indicate redundancy, and to increase the approachability of the measure. We found that the patients with bipolar II disorder had higher MIQ-T scores than the patients with bipolar I disorder or major depressive disorder and the comparison group. Conclusion: Together, these findings validate the newly developed MIQ-T as an instrument of mood instability. MIQ-T can be a potential research tool for mood disorder.

SUBMITTER: Yoon J

PROVIDER: S-EPMC8399587 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BACKGROUND:After a mobile health (mHealth) app is created, an important step is to evaluate the usability of the app before it is released to the public. There are multiple ways of conducting a usability study, one of which is collecting target users' feedback with a usability questionnaire. Different groups have used different questionnaires for mHealth app usability evaluation: The commonly used questionnaires are the System Usability Scale (SUS) and Post-Study System Usability Questionnaire (PSSUQ). However, the SUS and PSSUQ were not designed to evaluate the usability of mHealth apps. Self-written questionnaires are also commonly used for evaluation of mHealth app usability but they have not been validated. OBJECTIVE:The goal of this project was to develop and validate a new mHealth app usability questionnaire. METHODS:An mHealth app usability questionnaire (MAUQ) was designed by the research team based on a number of existing questionnaires used in previous mobile app usability studies, especially the well-validated questionnaires. MAUQ, SUS, and PSSUQ were then used to evaluate the usability of two mHealth apps: an interactive mHealth app and a standalone mHealth app. The reliability and validity of the new questionnaire were evaluated. The correlation coefficients among MAUQ, SUS, and PSSUQ were calculated. RESULTS:In this study, 128 study participants provided responses to the questionnaire statements. Psychometric analysis indicated that the MAUQ has three subscales and their internal consistency reliability is high. The relevant subscales correlated well with the subscales of the PSSUQ. The overall scale also strongly correlated with the PSSUQ and SUS. Four versions of the MAUQ were created in relation to the type of app (interactive or standalone) and target user of the app (patient or provider). A website has been created to make it convenient for mHealth app developers to use this new questionnaire in order to assess the usability of their mHealth apps. CONCLUSIONS:The newly created mHealth app usability questionnaire-MAUQ-has the reliability and validity required to assess mHealth app usability.

Project description:BackgroundThe associations between compassion, self-compassion, and body image are well established. However, there is not yet a compassion-informed measure of body compassion that can be applied to any aspect of one's body.MethodItems for The Body Compassion Questionnaire (BCQ) were derived from an earlier expressive writing study on self-compassion in body image. In study 1, the BCQ was completed by 728 men and women; with factor analysis, Rasch analysis, content and concurrent validation and reliability assessed. Study 2 compared BCQ scores with investigator-based ratings of spontaneous expressions of body compassion through writing in female undergraduates as well as an existing measure of body compassion. Study 3 examined the associations between BCQ scores, and the emotions expressed in a structured body image writing task. It also examined the relative predictive ability of the BCQ versus self-compassion in predicting eating pathology.ResultsA bi-factor structure was identified, with an overall BCQ score and three subscales: body kindness, common humanity, and motivated action. The BCQ and its subscales had good validity and reliability and Rasch analysis showed the item fit was invariant across a range of demographic characteristics. Spontaneous expressions of body compassion showed positive associations with body kindness. Overall BCQ scores and body kindness were also inversely related to negative emotions expressed in relation to body image. The BCQ was a better predictor of eating disorder symptoms than was self-compassion.ConclusionsThe BCQ is the first measure of body compassion that is aligned with theoretical aspects of self-compassion, and which includes aspects of both the first and second psychologies of compassion. It also highlights its potential use as a process measure of body compassion in models of eating disorder symptomology, mood and wellbeing as well as an outcome measure for compassion-based interventions in eating disorders and body image.

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Development and Validation of the Mood Instability Questionnaire-Trait (MIQ-T).

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