#101229 | AsPredicted

'Charity 2022'
(AsPredicted #101229)


Created:       06/28/2022 04:15 AM (PT)

This is an anonymized version of the pre-registration.  It was created by the author(s) to use during peer-review.
A non-anonymized version (containing author names) should be made available by the authors when the work it supports is made public.

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?
Hypothesis 1a: Donation decreases as spending on compliance increases (and spending on core programs decreases).
Hypothesis 1b: Donation decreases as other overhead expenses increase (and spending on core programs decreases).
Hypothesis 2: Donation decreases as other overhead expenses increase (and spending on compliance decreases).
Hypothesis 3: Donation is not significantly different when expense types are re-labeled from "Administrative Burden" to "Compliance" and "Overhead" to "Other overhead".

3) Describe the key dependent variable(s) specifying how they will be measured.
Amount donated to the charity out of 10 EUR.

4) How many and which conditions will participants be assigned to?
We vary the percentage of donation spent on Program, Administrative burden, and Overhead expenses according to below:
-Charity 1: 80% program, 10% compliance, 10% other overhead expenses
-Charity 2: 89% program, 1% compliance, 10% other overhead expenses
-Charity 3: 89% program, 10% compliance, 1% other overhead expenses
Subjects see the 3 charities in random order.

We also introduce a second treatment dimension:
-Treatment A: Expense types are "Program, Administrative Burden, Overhead"
-Treatment B: Expense types are "Program, Compliance, Other overhead"
Subjects are allocated into one of the two treatments.

5) Specify exactly which analyses you will conduct to examine the main question/hypothesis.
H1a: we will conduct t-test of donations to Charities 1 and 2
H1b: we will conduct t-test of donations to Charities 1 and 3
H2: we will conduct t-test of donations to Charities 2 and 3
H3: we will conduct t-test of donations to each charity in treatments A and B

The above will also be tested using OLS regressions with individual fixed-effects and controls as specified in the original paper.

6) Describe exactly how outliers will be defined and handled, and your precise rule(s) for excluding observations.
We do not expect to exclude any observations.

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.

We will allocate n=100 to each of treatments A and B for a total sample size of 200.

8) Anything else you would like to pre-register?
(e.g., secondary analyses, variables collected for exploratory purposes, unusual analyses planned?)

Nothing else to pre-register.