| Field | Before | After |
|---|---|---|
| Field Last Published | Before July 27, 2026 07:16 AM | After July 27, 2026 08:17 PM |
| Field Intervention (Public) | Before All participants complete the same insurance education, comprehension item, incentive explanation, plan menu, post-choice probability questions, liquidity question, and incentivized random-outcome procedure. The three conditions vary only in how the same objective damage distribution is described immediately before plan choice. 1. Separate damage-outcome probabilities condition: 96% chance of no damage, 1% chance of minor damage costing $750, and 3% chance of severe damage costing at least $2,500. 2. Any-damage and conditional-severity condition: 4% chance of any damage of at least $750 and, conditional on any damage, a 75% chance that damage is severe and costs at least $2,500. 3. Any-damage and severe-damage probabilities condition: 4% chance of any damage of at least $750 and 3% chance of severe damage costing at least $2,500. Participants choose among a Basic Plan ($616 premium, $2,000 deductible), Medium Plan ($900 premium, $400 deductible), and Premium Plan ($1,020 premium, $250 deductible). Their plan choice and a randomly selected damage outcome determine a bonus between $0.00 and $1.54. The regular participation payment is $1.00. | After All participants complete the same insurance education, comprehension item, incentive explanation, plan menu, post-choice probability questions, liquidity question, and incentivized random-outcome procedure. The three conditions vary only in how the same objective damage distribution is described immediately before plan choice. 1. Separate damage-outcome probabilities condition: 96% chance of no damage, 1% chance of minor damage costing $750, and 3% chance of severe damage costing $2,500. 2. Any-damage and conditional-severity condition: 4% chance of any damage of at least $750 and, conditional on any damage, a 75% chance that damage is severe and costs $2,500. 3. Any-damage and severe-damage probabilities condition: 4% chance of any damage of at least $750 and 3% chance of severe damage costing $2,500. Participants choose among a Basic Plan ($616 premium, $2,000 deductible), Medium Plan ($806 premium, $400 deductible), and Premium Plan ($926 premium, $250 deductible). Their plan choice and a randomly selected damage outcome determine a bonus between $0.00 and $1.54. The regular participation payment is $1.00. |
| Field Randomization Method | Before Qualtrics assigns participants using a 12-cell evenly presented randomizer: five cells assign the separate damage-outcome probabilities condition, five assign the any-damage and conditional-severity condition, and two assign the any-damage and severe-damage probabilities condition. The intended allocation is therefore 5:5:2. | After Qualtrics will assign participants using an eight-cell evenly presented randomizer. Three cells assign the terminal-state condition, three assign the nested-conditional condition, and two assign the marginal-probability condition. The randomizer presents one cell to each participant, producing an intended allocation ratio of 3:3:2. |
| Field Sample size (or number of clusters) by treatment arms | Before The target analytic sample is 600 eligible completed participants after the preregistered exclusions: approximately 250 in the separate damage-outcome probabilities condition, 250 in the any-damage and conditional-severity condition, and 100 in the any-damage and severe-damage probabilities condition. Recruitment may continue until the target analytic sample is reached, subject to budget and platform availability. | After The target analytic sample is 600 eligible completed participants after the preregistered exclusions: approximately 200 in the separate damage-outcome probabilities condition, 200 in the any-damage and conditional-severity condition, and 150 in the any-damage and severe-damage probabilities condition. Recruitment may continue until the target analytic sample is reached, subject to budget and platform availability. |
| Field | Before | After |
|---|---|---|
| Field Document | Before |
After
Experiment_E_analysis_plan.docx
MD5:
9ea09320a74ad8b2a97a84cd992b6336
SHA1:
a376ba87e2cef56203745c5a912ea21bb3fd8e71
|
| Field | Value |
|---|---|
| Field Document |
Value
Experiment_E_analysis_plan.docx
MD5:
3e242fe15fc94457be21b37361013eb1
SHA1:
9f8957ed33708e729a39425aab2755c2cfe34eae
|