Here are the hypotheses and corresponding results from April 11-15:
Monetary Incentive: 4 vs. 10 cents
In an experiment, there are two treatments A and B:
A: Subject earns additional 4 cents for every 100 effort units.
B: Subject earns additional 10 cents for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Monetary Incentive: 1000 vs. 100 points
In an experiment, there are two treatments A and B:
A: Subject earns an additional 1 cent for every 1000 effort units.
B: Subject earns an additional 1 cent for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Monetary Incentive: 4 weeks
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject earns an additional 1 cent for every 100 effort units but will be paid in 4 weeks.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Limited Altruism: 10 cents
In an experiment, there are two treatments A and B:
A: Additionally, 10 cents are donated to a charity for every 100 effort units by the subjects.
B: Subject earns additional 10 cents for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Social Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Probability Weighting: 50% vs. 1%
In an experiment, there are two treatments A and B:
A: Subjects have 50% chance to earn additional 2 cents for every 100 effort units.
B: Subjects have 1% chance to earn an additional 1 dollar for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Prospect Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Probability Weighting: 50% vs. 100%
In an experiment, there are two treatments A and B:
A: Subjects have 50% chance to earn additional 2 cents for every 100 effort units.
B: Subject earns an additional 1 cent for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Prospect Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Encouragement
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject is only paid the participation fee but asked to perform as fast as she can.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A.)
This hypothesis is predicted by Narrow Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Relative Performance vs. Encouragement
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee but told about how well she did relative to others.
B: Subject is only paid the participation fee but asked to perform as fast as she can.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A.)
This hypothesis is predicted by Narrow Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
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Past Results
Here are the hypotheses and corresponding results from April 6-10:
Monetary Incentive: 40 cents
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject earns additional 40 cents if they reach at least 2000 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Monetary Incentive: 40 vs. 80 cents
In an experiment, there are two treatments A and B:
A: Subject earns additional 40 cents if they reach at least 2000 effort units.
B: Subject earns additional 80 cents if they reach at least 2000 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Monetary Incentive: 1%
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subjects have 1% chance to earn an additional 1 dollar for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Altruism: 10 cents
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Additionally, 10 cents are donated to a charity for every 100 effort units by the subject.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Social Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Altruism: 1 vs. 10 cents
In an experiment, there are two treatments A and B:
A: Additionally, 1 cent is donated to a charity for every 100 effort units by the subject.
B: Additionally, 10 cents are donated to a charity for every 100 effort units by the subject.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Social Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Loss Aversion
In an experiment, there are two treatments A and B:
A: Subject earns additional 40 cents if they reach at least 2000 effort units.
B: Subject earns additional 40 cents but lose it if they reach less than 2000 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by Prospect Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Relative Performance Information
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject is only paid the participation fee but told about how well she did relative to others.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A)
This hypothesis is predicted by Narrow Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Absolute vs. Relative Information
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee but told about how others performed in the past.
B: Subject is only paid the participation fee but told about how well she did relative to others.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A.)
This hypothesis is predicted by Narrow Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
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Past Results
Here are the hypotheses and corresponding results from April 1-5:
Monetary Incentive: 1 cent for 100 units
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject earns an additional 1 cent for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Monetary Incentive: 1 cent for 1000 units
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject earns an additional 1 cent for every 1000 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Monetary Incentive: 1 vs. 10 cents
In an experiment, there are two treatments A and B:
A: Subject earns an additional 1 cent for every 100 effort units.
B: Subject earns additional 10 cents for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the 4 theories.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Altruism: 1 cent
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Additionally, 1 cent is donated to a charity for every 100 effort units by the subjects.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the Social Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Limited Altruism: 1 cent
In an experiment, there are two treatments A and B:
A: Additionally, 1 cent is donated to a charity for every 100 effort units by the subjects.
B: Subject earns an additional 1 cent for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the Social Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Probability Weighting: 1 cent vs. 1%
In an experiment, there are two treatments A and B:
A: Subject earns an additional 1 cent for every 100 effort units.
B: Subjects have 1% chance to earn an additional 1 dollar for every 100 effort units.
Hypothesis: The average effort in B is significantly higher than in A.
This hypothesis is predicted by the Prospect Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.
Unconditional Bonus
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject is additionally paid 40 cents bonus unconditional to effort.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A)
This hypothesis is predicted by the Narrow Reward Theory.
TRUE: This hypothesis was supported by the statistical test. The corresponding asset value is thus 100.
Information about Others
In an experiment, there are two treatments A and B:
A: Subject is only paid the participation fee.
B: Subject is only paid the participation fee but told about how others performed in the past.
Hypothesis: The average effort in B and A are the same. (No statistically significant difference between B and A)
This hypothesis is predicted by the Narrow Reward Theory.
FALSE: This hypothesis was not supported by the statistical test. The corresponding asset value is 0.