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Title page 1

Contents 3

ABSTRACT 2

INTRODUCTION 5

1. BACKGROUND 5

2. METHODOLOGY 10

3. RESULTS 15

4. DISCUSSION 25

REFERENCES 28

APPENDIX A. IMAGES OF EXPERIMENTS 29

Tables 3

Table 1. Number of Cases in Experimental Groups for Each Question 14

Table 2. Item Missingness Rates by Experimental Group 16

Table 3. Summary of Differences in the Distribution of Responses to the Series 17

Table 4. Distribution of Responses for the Down Payment (in Percent), Among Respondents who Received the Question 18

Table 5. Distribution of the Responses for Down Payment (in Dollars), Among Respondents who Received the Question 18

Table 6. Distribution of the Responses for Mortgage, Among Respondents who Received the Question 19

Table 7. Distribution of the Responses for Rent, Among Respondents who Received the Question 19

Table 8. Distribution of the Responses for Utilities, Among Respondents who Received the Question 20

Table 9. Percent of Rounded Answers in the Numeric Write-in by Treatment Group 21

Table 10. Mean Time Spent on the Numeric Write-in and Range Follow-up Questions (in Seconds), Among Respondents who Skipped or Selected the "I'm not sure"... 22

Table 11. Mean Time Spent on Numeric Write-in Questions (in Seconds), Among Respondents who Skipped or Only Selected the "I'm not sure" Checkbox... 23

Table 12. Mean Time Spent on the Range Follow-up Questions (in Seconds), Among Respondents who Skipped or Selected the "I'm not sure" Checkbox... 23

Table 13. Mean Time Spent on Numeric Write-in Question (in Seconds), Among Respondents who Provided an Answer in the Numeric Write-in 24

Table 14. Breakoff Rates on Numeric Write-ins by Treatment Group 25

Figures 4

Figure 1. SIPP CAPI Numeric Open-end Question - Mortgage/Rent 6

Figure 2. SIPP CAPI Range Follow-up Question - Mortgage/Rent 6

Figure 3. Example of the Control Group 11

Figure 4. Example of the Instruction-to-Estimate Treatment Group 12

Figure 5. Example of the "I'm not sure" Checkbox Group 12

Figure 6. Range Follow-up Example - Mortgage 13

Figure 7. Entering a number and selecting the "I'm not sure" Checkbox 13