The monetary compensation participants received at the end of the experiment depended on their performance on the task (both outside and inside the scanner) and varied between £15 and 20.
Sixty-nine individuals participated for monetary compensation; 19 participants failed to complete the task due to mild simulator sickness (n = 11) or difficulty performing the wayfinding task (i.e. not completing the task within 1.5 h; n = 8).
Forty-one individuals participated for monetary compensation; nine participants failed to complete the task due to mild simulator sickness (n = 3) or difficulty performing the wayfinding task (i.e. not completing the task within 1.5 h; n = 6).
Signed informed consent was obtained from all study participants, and all participants received monetary compensation for their participation.
Three trials (3166 participants) that evaluated the effect of giving monetary incentives to participants showed that the addition of monetary incentives is more effective than no incentive at increasing response to postal questionnaires (RR=1.18; 95% CI 1.09 to 1.28; p<0.0001, heterogeneity p=0.21; figure 1A).
The three trials (3166 participants) that evaluated the effect of giving monetary incentives to participants showed that the addition of monetary incentives was more effective than no incentive at increasing response to postal questionnaires (RR 1.18; 95% CI 1.09 to 1.28, P value < 0.0001) (Analysis 1.1).
We also tested the impact of monetary incentives — paying participants extra to leave employer reviews.
By adding a monetary reward for participants to their experiment, the academics were able to confirm their hypothesis.
Only a few days ago WikiLeaks revealed the troubling transcript of a telephone conversation involving the International Monetary Fund's participants in the Greek drama.
But a lawsuit filed Thursday in the United States District Court in Phoenix, seeking monetary damages for participants in the Maricopa County program, paints a picture of the darker side of diversion.
Previous research has documented that giving a monetary reward to participants can improve their motivation in responding, thus being beneficial to the quality of survey data (Esterman, Reagan, Liu, Turner, & DeGutis, 2014).
