Experimental Design Details
The main experimental design is randomization to the four treatment arms. The following describes additional, secondary experimental design features.
For the question which measures the initial prevalence of the misperception, ALL survey respondents are randomly assigned to either a TRUE or FALSE framing. The individuals randomly assigned to the misperception intervention will then be told the truth and so will receive slightly different versions of the intervention based on whether they initially answered the TRUE or FALSE question framing.
For each of the interventions which provide vignettes about work or family, we randomly assign the indicated gender for the person in the vignette. For each vignette type, the “man” or “woman” indications are assigned with equal probability.
To test for social desirability bias, all survey respondents will be randomly assigned to one of four conditions during the measurement of stigmatizing attitudes questions: (a) no additional prompt, (b) a prompt reminding respondents their answers are “confidential and anonymous”, (c) a prompt indicating we are “interested in your personal opinions”, and (d) both prompts.
At baseline, all survey respondents are given a selection of questions from a measure developed by social psychologists to measure their propensity to give socially desirable answers (Crowne & Marlowe 1960; Reynolds 1982). For example, one question asks respondents whether they “never hesitate to go out of [their] way to help someone in trouble”, where the socially desirable answer is true. For each respondent, we will calculate a social desirability score based on the number of socially desirable answers. We will test the robustness of our results to controlling for this social desirability score.
Endline demographic questions include SNAP receipt in one’s social network, age, gender, income, race, ethnicity, political affiliation, education, work status, and zipcode.
In the second wave, participants are randomized to have the additional demographic questions at the very end of the survey (as before) or the very beginning of the survey.
In the second wave, we add the following demographic questions: length of time ever participated in SNAP and number of children in the household.