Monetary versus grade incentives depending on personality traits: A field experiment on undergraduate students' performance.

This study aims to examine the role of personality on the effectiveness in improving students' performance of two extrinsic incentives: monetary and grade incentives. To achieve this goal, we conducted a randomized field experiment in which students in a Microeconomics course were offered the opportunity to participate in a practice test program, with no effects on the grade of the course itself. In the call to participate, students were informed that participants would be randomly assigned to one of two groups. Whereas in the control group students would not be monetarily incentivized, participants assigned to the treatment group would be paid according to their performance in the practice tests. In addition, we elicited the big five personality and risk aversion traits of the participants (168 undergraduates). All subjects received grade incentives in the later official course exam, in which no monetary incentives were offered. We used non-parametric tests to carry out both between-subjects and within-subjects performance comparisons. Controlling for potential confounding factors like students' gender and academic record, our OLS regressions indicate that although monetary incentives are effective in improving students' performance in practice tests, their effect does not carry over to the course exam. Furthermore, we find that the effectiveness of grade incentives (used in the course exam) on improvement as a substitute for monetary incentives (adopted in practice tests), is higher the more conscientious the students are.

When Will the Lockdown End? Confinement Duration Forecasts and Self-Reported Life Satisfaction in Spain: A Longitudinal Study.

This paper reports results from a longitudinal study on the impact of the lockdown on daily self-reported life satisfaction levels during the first wave of the COVID-19 pandemic in Spain. A stable panel (N = 1,131) of adult subjects were surveyed during 84 consecutive days (March 29-June 20, 2020). They were asked to report daily life satisfaction and health state levels. Interestingly, daily life satisfaction increased during the lockdown. At the beginning of the experiment, subjects were asked to guess the end-week of the lockdown, against a possible monetary reward for accurate forecasts. Subjects predicting a longer lockdown period reported a higher average level of daily life satisfaction. Females reported on average lower levels of daily life satisfaction, but exhibited a stronger tendency to report higher levels of life satisfaction, the longer their lockdown forecast. Individual heterogeneity in life satisfaction levels can be partly attributed to personality traits, with neuroticism having a negative effect, while extraversion and agreeableness having a positive effect on daily life satisfaction.

Risk-taking and fairness among cocaine-dependent patients in dual diagnoses: Schizophrenia and Anti-Social Personality Disorder.

This study reports experimental results from a clinical sample of patients with a cocaine-related disorder and dual diagnosis: Schizophrenia and Anti-Social Personality Disorder. Both types of patients as well as a non-clinical group of students performed two incentivized decision-making tasks. In the first part of the experiment, they performed a lottery-choice task in order to elicit their degree of risk aversion. In the second part, they decided in two modified dictator games aimed at eliciting their aversion to advantageous and disadvantageous inequality. It is found that the Anti-Social Personality Disorder group exhibits no significant differences from the non-clinical sample in either task. However, compared with the students' sample, subjects from the group with schizophrenia show more risk aversion and exhibit more aversion towards disadvantageous inequality.