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Using genetic algorithms to abbreviate the mindfulness inventory for sport: A substantive-methodological synthesis
Noetel, Michael Ciarrochi, Joseph Sahdra, Baljinder Lonsdale, Chris
Noetel, Michael
Ciarrochi, Joseph
Sahdra, Baljinder
Lonsdale, Chris
Abstract
Objectives: To demonstrate the use of machine-learning for reducing questionnaire response burden, we created multiple, shorter versions of the Mindfulness Inventory for Sport. We then tested the reliability and validity of scores derived from these shorter versions in athletic populations. Design: We used genetic algorithms to shorten the measure, and both cross-sectional and longitudinal data to test psychometric properties. Method: We collected data from 859 undergraduate exercise science students and 118 golfers. We used 75% of the student sample to shorten the measure, and the rest of the data to test the internal consistency, test-retest reliability, content validity, and factorial validity. For criterion validity, we explored relationships between the subscales and other measures of mindfulness, golf handicaps, and an objective measure of putting accuracy. Results: Genetic algorithms efficiently generated stable solutions to shortening the measure. Reliability decreased as the measure become shorter—especially between three and two items per subscale—but remained acceptable. Validity metrics for shorter versions were as good, and sometimes better, than the full questionnaire. Awareness and refocusing subscales demonstrated weak associations with golf handicap for long and short versions. Non-judgment showed no significant associations, and no subscales significantly predicted putting performance. Conclusions: Genetic algorithms provide efficient solutions to reducing questionnaire response burden for athletes.
Keywords
psychometric validity, reliability, machine learning, athletes, mindfulness, acceptance
Date
2019
Type
Journal article
Journal
Psychology of Sport and Exercise
Book
Volume
45
Issue
101545
Page Range
1-11
Article Number
ACU Department
School of Behavioural and Health Sciences
Faculty of Health Sciences
Institute for Positive Psychology and Education
Faculty of Education and Arts
Non-faculty
Faculty of Health Sciences
Institute for Positive Psychology and Education
Faculty of Education and Arts
Non-faculty
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled