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We used a reversal (ABAB) design to assess the effects of a personal prompt on safety belt usage by grocery store patrons. A personal prompt delivered by grocery carriers resulted in a 12% increase in the number of patrons exiting the parking lot with their safety belts buckled. This simple, low‐cost intervention offers potential savings to society from increased safety belt use.
Engerman et al. (Mon,) studied this question.
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