TY - JOUR
T1 - Development and evaluation of the Motivation to Limit Screen-time Questionnaire (MLSQ) for adolescents
AU - Lubans, D. R.
AU - Lonsdale, C.
AU - Plotnikoff, R. C.
AU - Smith, J.
AU - Dally, K.
AU - Morgan, P. J.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/1959.7/uws:18328
U2 - 10.1016/j.ypmed.2013.07.023
DO - 10.1016/j.ypmed.2013.07.023
M3 - Article
SN - 0091-7435
VL - 57
SP - 561
EP - 566
JO - Preventive Medicine
JF - Preventive Medicine
IS - 5
ER -