Ryan E. Rhodes is supported by a scholar award from the Michael Smith Foundation for Health Research, a new investigator award from the Canadian Institutes of Health Research, and with funds from the Social Sciences and Humanities Research Council of Canada and the British Columbia Ministry of Children and Family Development (Human Early Learning Partnership). Chris M. Blanchard is supported by the Canada Research Chair Program.
What Do Confidence Items Measure in the Physical Activity Domain?1
Article first published online: 27 MAR 2007
Journal of Applied Social Psychology
Volume 37, Issue 4, pages 759–774, April 2007
How to Cite
Rhodes, R. E. and Blanchard, C. M. (2007), What Do Confidence Items Measure in the Physical Activity Domain?. Journal of Applied Social Psychology, 37: 759–774. doi: 10.1111/j.1559-1816.2007.00184.x
- Issue published online: 27 MAR 2007
- Article first published online: 27 MAR 2007
The study's purpose was to examine the measurement domain of confidence items used in physical activity research. We hypothesized that confidence items, including a phrase to hold motivation constant, would differ from standard confidence items. Participants (N = 248 students) completed confidence items, a thought-listing procedure, and a 2-week self-report of physical activity. Results showed that confidence items with motivation held constant loaded exclusively on one factor, but standard confidence items were factor complex with intention. Correlations with physical activity intention and behavior were larger for confidence items than confidence items with motivation held constant. Finally, the thought-listing procedure identified that 3 of the 7 reasons for answering confidence items were outside the intended measurement domain of self-efficacy.