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This study reports the results of an experiment designed to elicit students' subjective beliefs about the economic returns to college education. An important feature of our experimental design is the inclusion of financial incentives for accurate reporting. We also consider the extent to which individuals' beliefs about their own returns differ from their beliefs about the returns for others. The evidence shows that students do have a self-enhancement tendency, and this finding cannot be attributed to previously uncontrolled order effects. The evidence also indicates that there is no significant difference between beliefs elicited using hypothetical surveys or real financial incentives in the elicitation procedure. This finding suggests that economists' reluctance to gather subjective data on earnings expectations may not be warrant.

Unsustainable patterns of tourist behavior produce a massive environmental burden. Nevertheless, it is unknown which behavioral strategies can be implemented to foster resource-efficient behavior in customers of leisure and travel services. This article aims to identify and summarize the evidence about the interventions which have been tested to promote sustainable hotel guest behavior. Electronic searches were performed in the main databases from inception to September 2016. Papers deemed eligible for inclusion were experimental field studies, reporting factual changes in guest behavior. The final sample was composed of nine papers comprising 13 studies in a total of 5,859 hotel stays. Results showed that all included interventions targeted towel reuse. Five different types of interventions were identified including environmental appeals, messages prompting commitment for conservation, donation to charity, social norms, and nudges. Only the last two forms of interventions (social norms: effect size [ES] = −0.25, 95% confidence interval [CI] = [−0.39, −0.12], p = .004 and nudges: ES = −0.43, 95% CI = [−0.72, −0.13], p = .009) showed significant positive effects in promoting towel reuse. Particularly regarding social norms, our work shows an effect weaker than reported in previous meta-analyses but consistent (low between-study heterogeneity) in producing modest increases in the levels of towel reuse.

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