1) Have any data been collected for this study already? No, no data have been collected for this study yet.
2) What's the main question being asked or hypothesis being tested in this study? A short video will reduce transphobia among parents.
3) Describe the key dependent variable(s) specifying how they will be measured. The Transgender Stigma Scale and Gender Thermometer
Transgender stigma scale (alpha reliability of .89, doi: 10.1353/hpu.2019.0089)
1. If I found out that my best friend's child was changing their sex I would not support him/her.
2. Changing one sex is an affront God.
3. Boys who act like girls should be ashamed of themselves.
4. Children should play with toys appropriate to their own sex.
5. Boys who see themselves as girls have a mental health problem.
6. Feminine boys should be treated for their problems by a qualified health professionals
7. I would discourage my son/daughter from having a transgender friend
8. Sex change operation are morally wrong.
9. Feminine boys make me feel uncomfortable.
10. Children are either boys or girls; there should be no middle point.
Gender thermometer
Using a scale from zero to 100, please tell us about your personal feelings toward transgender kids. As you do this task, think of an imaginary thermometer. The warmer or more favorable you feel toward the group, the higher the number you should give it. The colder or less favorable you feel, the lower the number. If you feel neither warm nor cold toward the group, rate it 50.
[0-100 scale]
4) How many and which conditions will participants be assigned to? Two conditions: Intervention (short video) and control (written vignette)
5) Specify exactly which analyses you will conduct to examine the main question/hypothesis. Repeated measure ANOVAs.
6) Describe exactly how outliers will be defined and handled, and your precise rule(s) for excluding observations. N/A
7) How many observations will be collected or what will determine sample size? No need to justify decision, but be precise about exactly how the number will be determined. 1200
8) Anything else you would like to pre-register? (e.g., secondary analyses, variables collected for exploratory purposes, unusual analyses planned?) N/A
