A study was conducted to determine which health behavior would be most beneficial to life satisfaction scores. The researcher assigned the control group to walk 30 minutes a day, while the experimental group took a 30 minute nap each day. The control group found out that the experimental group were asked to nap for 30 minutes a day and thinking they wanted to also get that benefit they also napped in addition to the walking. Which threat to external validity is most likely to occur based on this? instrumentation errors diffusion of treatments multiple-treatment interference reactive arrangements

Ciccarelli: Psychology_5 (5th Edition)
5th Edition
ISBN:9780134477961
Author:Saundra K. Ciccarelli, J. Noland White
Publisher:Saundra K. Ciccarelli, J. Noland White
Chapter1: The Science Of Psychology
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A study was conducted to determine which health behavior would be most
beneficial to life satisfaction scores. The researcher assigned the control
group to walk 30 minutes a day, while the experimental group took a 30
minute nap each day. The control group found out that the experimental
group were asked to nap for 30 minutes a day and thinking they wanted to
also get that benefit they also napped in addition to the walking. Which
threat to external validity is most likely to occur based on this?
O instrumentation errors
O diffusion of treatments
O multiple-treatment interference
O reactive arrangements
Transcribed Image Text:A study was conducted to determine which health behavior would be most beneficial to life satisfaction scores. The researcher assigned the control group to walk 30 minutes a day, while the experimental group took a 30 minute nap each day. The control group found out that the experimental group were asked to nap for 30 minutes a day and thinking they wanted to also get that benefit they also napped in addition to the walking. Which threat to external validity is most likely to occur based on this? O instrumentation errors O diffusion of treatments O multiple-treatment interference O reactive arrangements
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