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Prev Med. 2013 Nov;57(5):561-6. doi: 10.1016/j.ypmed.2013.07.023. Epub 2013 Aug 13.

Development and evaluation of the Motivation to Limit Screen-time Questionnaire (MLSQ) for adolescents.

Author information

1
Priority Research Centre in Physical Activity and Nutrition, School of Education, University of Newcastle, Newcastle, Australia. Electronic address: David.Lubans@newcastle.edu.au.

Abstract

OBJECTIVE:

The aim of this study was to design and evaluate a brief scale to assess adolescents' motivation to limit their screen-time using a self-determination theory (SDT) framework.

METHODS:

The development and evaluation of the Motivation to Limit Screen-time Questionnaire (MLSQ) involved three phases. In Phase 1, experts in SDT were asked to review the content validity of the MLSQ items. In Phase 2, adolescent boys (N=342, mean age=12.7 ±.5 years) completed the MLSQ and the factorial validity of the model was explored. In Phase 3, adolescent boys (N=48, mean age=14.3 ± 1.3 years) completed the MLSQ on two occasions separated by 1-week. Phases 2 and 3 were conducted in New South Wales, Australia in 2012.

RESULTS:

Twenty four SDT experts reviewed the original scale items. Validity coefficients associated with six of the original eight items exceeded the threshold value (V>.68, p<.01). In Phase 2, the revised three-factor (9-items) model provided a good fit to the data (SRMR=.07, CFI=.96). The intraclass correlation (ICC) values were .67 for amotivation and .70 and .82 for controlled and autonomous motivation, respectively.

CONCLUSION:

This study has provided preliminary evidence for the validity and reliability of the MLSQ in adolescent boys.

KEYWORDS:

Adolescents; CFA; CFI; Confirmatory factor analysis; ICC; Intraclass correlation coefficient; MLSQ; Motivation; Motivation to Limit Screen-time Questionnaire; NSW; New South Wales; Questionnaire; RAI; Reliability; SDT; SRMR; Screen-time; Self-determination theory; TSRQ; Treatment Self-Regulation Questionnaire; V; Validity; comparative fit index; content validity coefficient; relative autonomy index; self-determination theory; standardized root mean square residual

PMID:
23954182
DOI:
10.1016/j.ypmed.2013.07.023
[Indexed for MEDLINE]

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