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Does source credibility matter for point-of-decision prompts? A quasi-experimental field study to increase stair use

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  • Ivan P Lee
  • Richard M Walker

Abstract

A quasi-experimental field study was undertaken to examine whether the source credibility of point-of-decision (POD) prompts would affect their effectiveness in increasing stair use. POD prompts attributed either to a more credible source, a less credible source, or nothing were randomly installed in three student halls of residence at a public university in Hong Kong (plus a control). The stair and elevator use of residents were recorded by view-from-top surveillance cameras and counted using motion-detection software, resulting in 14,189 observations. The findings show that all the POD prompts can yield, as hypothesized, a significant positive effect on stair use. The relative increase in stair use was 2.49% on average. However, contrary to our second hypothesis, the POD prompt attributed to the more credible source was not the most effective intervention. The implications of these findings are discussed in conclusion.

Suggested Citation

  • Ivan P Lee & Richard M Walker, 2019. "Does source credibility matter for point-of-decision prompts? A quasi-experimental field study to increase stair use," PLOS ONE, Public Library of Science, vol. 14(11), pages 1-19, November.
  • Handle: RePEc:plo:pone00:0225520
    DOI: 10.1371/journal.pone.0225520
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    References listed on IDEAS

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