The American Journal of Occupational Therapy published research on a pilot study of 10 second grade students that exhibited difficulties with attention span. The intervention group wore a weighted vest and the percentage of time on task was measured. The control group wore a non weighted vest. The examiners and data collectors were blind to whether the student was in the intervention or control group. A statistical analysis revealed that the weighted vest was not effective in increasing time on task.
You can read the full text article at AJOT.
Reference: Amy Collins and Rosalind J. Dworkin. Pilot Study of the Effectiveness of Weighted Vests Am J Occup Ther November 2011 65:688-694; doi:10.5014/ajot.2011.000596
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