Discussion Paper No. 153
November 8, 2021
Experiments on Matching Markets: A Survey
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The paper surveys the experimental literature on matching markets. It covers house allocation, school choice, and two-sided matching markets such as college admissions. The main focus of the survey is on truth-telling and strategic manipulations by the agents, on the stability and efficiency of the matching outcome, as well as on the distribution of utility.
Keywords:
C92; D47; D83;
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Discussion Paper No. 151
Obviousness Around the Clock
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Li (2017) supports his theoretical notion of obviousness of a dominant strategy with experimental evidence that bidding is closer to dominance in the dynamic ascending-clock than the static second-price auction (private values). We replicate his experimental study and add three intermediate auction formats to decompose this behavioral improvement into cumulative effects of (1) seeing an ascending-price clock (after bid submission), (2) bidding dynamically on the clock and (3) getting drop-out information. Li's theory predicts dominance to become obvious through (2) dynamic bidding. We find no significant behavioral effect of (2). However, both (1) and (3) are highly significant.
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Discussion Paper No. 150
Effects of Timing and Reference Frame of Feedback
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Information about past performance has been found to sometimes improve and sometimes worsen subsequent performance. Two factors may help to explain this puzzle: which aspect of one's past performance the information refers to and when it is revealed. In a field experiment in secondary schools, students received information about their absolute rank in the last math exam (level feedback), their change in ranks between the second-last and the last math exam (change feedback), or no feedback. Feedback was given either 1-3 days (early) or immediately (late) before the final math exam of the semester. Both level feedback and change feedback significantly improve students' grades in the final exam when given early and tend to worsen them when given late. The largest effects are found for negative change feedback and are concentrated on male students, who adjust their ability beliefs downwards in response to feedback.
Keywords:
timing of feedback; type of feedback; beliefs; education; field experiment;
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Discussion Paper No. 149
Do Party Positions Affect the Public's Policy Preferences?
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The standard assumption of exogenous policy preferences implies that parties set their positions according to their voters' preferences. We investigate the reverse effect: Are the electorates' policy preferences responsive to party positions? In a representative German survey, we inform randomized treatment groups about the positions of political parties on two family policies, child care subsidy and universal student aid. In both experiments, results show that the treatment aligns the preferences of specific partisan groups with their preferred party's position on the policy under consideration, implying endogeneity of policy preferences. The information treatment also affects non-partisan swing voters.
Keywords:
political parties; partisanship; survey experiment; information; endogenous preferences; voters; family policy;
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Discussion Paper No. 148
Peer Effects of Ambition
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Ambition as the desire for personal achievement is an important driver of behavior. Using laboratory experiments, we study the role of social influence on ambition in two distinct domains of achievement, namely performance goals and task complexity. In the first case, participants set themselves a performance goal for a task they have to work on. The goal is associated with a proportional bonus that is added to a piece rate if the goal is reached. In the second case, they choose the complexity of the task, which is positively associated with the piece rate compensation and effort. In both cases we test whether observing peer choices influences own choices. We find strong evidence of peer effects on performance goals. In contrast, we find no support for peer effects on the choice of task complexity.
Keywords:
peer effects; ambition; goal setting; task difficulty; laboratory experiment;
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Discussion Paper No. 146
Incentives, Search Engines, and the Elicitation of Subjective Beliefs: Evidence from Representative Online Survey Experiments
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A large literature studies subjective beliefs about economic facts using unincentivized survey questions. We devise randomized experiments in a representative online survey to investigate whether incentivizing belief accuracy affects stated beliefs about average earnings by professional degree and average public school spending. Incentive provision does not impact earnings beliefs, but improves school-spending beliefs. Response patterns suggest that the latter effect likely reflects increased online-search activity. Consistently, an experiment that just encourages search-engine usage produces very similar results. Another experiment provides no evidence of experimenter-demand effects. Overall, results suggest that incentive provision does not reduce bias in our survey-based belief measures.
Keywords:
beliefs; incentives; online search; survey experiment;
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Discussion Paper No. 145
The Political Economy of Higher Education Finance: How Information and Design Affect Public Preferences for Tuition
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Public preferences for charging tuition are important for determining higher education finance. To test whether public support for tuition depends on information and design, we devise several survey experiments in representative samples of the German electorate (N > 19,500). The electorate is divided, with a slight plurality opposing tuition. Providing information on the university earnings premium raises support for tuition by 7 percentage points, turning the plurality in favor. The opposition-reducing effect persists two weeks after treatment. Information on fiscal costs and unequal access does not affect public preferences. Designing tuition as deferred income-contingent payments raises support by 16 percentage points, creating a strong majority favoring tuition. The same effect emerges when framed as loan payments. Support decreases with higher tuition levels and increases when targeted at non-EU students.
Keywords:
tuition; higher education; political economy; survey experiments; information; earnings premium; income-contingent loans; voting;
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Discussion Paper No. 128
Obstacles to Efficient Allocations of Public Education Spending
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Economic research suggests that investments in early education are generally more successful than investments at later ages. This paper presents a representative survey experiment on education spending in Germany, which exhibits low relative public spending on early education. Results are consistent with a model of misconceptions: informing randomly selected respondents about benefits of early education spending shifts majority support for public spending increases from later education levels to spending on early and primary education. Effects of information provision persist over a two-week period in a follow-up survey. By contrast, results do not suggest self-interested groups inefficiently allocate public education spending.
Keywords:
misconceptions; public spending; education spending; information; survey experiment;
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Discussion Paper No. 122
Testing
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We investigate the achievement impact of alternative uses of student assessments. Our dataset covers over 2 million students in 59 countries observed over 6 waves in the international PISA test 2000-2015. Our empirical model exploits the country panel dimension to investigate assessment reforms over time, taking out country and year fixed effects. The expansion of standardized external comparisons, both school-based and student-based, is associated with improvements in student achievement. The effect of school-based comparison is stronger in low-performing countries. By contrast, solely internal testing without external comparison and internal teacher monitoring including inspectorates do not affect student achievement.
Keywords:
student assessment; testing; accountability; student achievement; international; pisa;
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Discussion Paper No. 117
November 5, 2021
Can Online Surveys Represent the Entire Population?
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A general concern with the representativeness of online surveys is that they exclude the "offline" population that does not use the internet. We run a large-scale opinion survey with (1) onliners in web mode, (2) offliners in face-to-face mode, and (3) onliners in face-to-face mode. We find marked response differences between onliners and offliners in the mixed-mode setting (1 vs. 2). Response differences between onliners and offliners in the same face-to-face mode (2 vs. 3) disappear when controlling for background characteristics, indicating mode effects rather than unobserved population differences. Differences in background characteristics of onliners in the two modes (1 vs. 3) indicate that mode effects partly reflect sampling differences. In our setting, re-weighting online-survey observations appears a pragmatic solution when aiming at representativeness for the entire population.
Keywords:
online survey; representativeness; mode effects; offliner; public opinion;
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