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Last Published
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Before
August 15, 2025 12:35 AM
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After
October 08, 2025 01:02 AM
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Intervention Start Date
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Before
September 21, 2025
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After
October 10, 2025
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Primary Outcomes (End Points)
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Before
Beliefs on targeted social norm questions and untargeted related and unrelated beliefs.
Donation amounts.
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After
1. Participants' suggestions for whether mother or father to take time off to care for a preschool child.
2. Donation amounts to the charity called Fitted for Work, whose aim is to empower disadvantaged women to achieve economic independence through sustainable work by providing job finding/preparation services.
3. Untargeted related and unrelated beliefs.
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Primary Outcomes (Explanation)
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Before
Research Question: Do Australians correctly perceive the opinions held by others regarding working mothers? Is there gender and SES differences on beliefs? If the norms are misperceived, can information shift individual attitudes? And will information treatments impact related and unrelated beliefs that are not specifically targeted by the information treatment?
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After
1. participants' suggestions will be from three different questions. We will analyze them sepearately and also by taking the average of them.
2. donation amounts will be compared in terms of whether any positive amount given, as well as averages and distributions.
3. we will compare the averages and the distributions of beliefs on related and unrelated beliefs questions
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Sample size (or number of clusters) by treatment arms
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Before
The sample size by treatment arms will depend on the results of power calculations using the first stage data. The preregistration will be updated after the first stage data collection with this information before the second stage data collection.
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After
400 individuals in the second round. 200 in control and 200 in treatment. In each arm, half of subjects will see the questions (and treatment information if they are in the treatment) phrased from mother's point of view (e.g. provide your percent recommendation the mother take time off) and the other half will see the questions phrased from father's point of view (e.g. provide your percent recommendation the father take time off).
-100 in mother frame control
-100 in father frame control
-100 in mother frame treatment
-100 in father frame treatment
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Power calculation: Minimum Detectable Effect Size for Main Outcomes
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Before
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After
We have the following parameter for the power calculations of the second stage based on the first stage results:
Sigma = 0.05
Two sided test t-test
200 in each condition
σ = 25.60119
Control mean = 12.8
We have 0.9988 power to detect medium size effect (d=0.5) and 0.5141 power to detect a small size effect (d=0.2).
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Intervention (Hidden)
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Before
Our experiment in the second stage is a between-subject design.
1) Control: participants are asked to complete the survey (elicitation tasks) in a standard fashion with no information treatment.
2) Treatment: Participants will receive treatment information. In this treatment, participants are provided with information (belief updating) about their peers’ responses to the same questions in an earlier survey round.
Donation: As part of the study, some of the participants will be randomly selected to receive a bonus. Participants will make a decision about whether to donate some of their bonus to a non-profit organisation called Fitted for Work, whose aim is to empower disadvantaged women to achieve economic independence through sustainable work by providing job finding/preparation services.
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After
Our experiment in the second stage is a between-subject design.
1) Control: participants are asked to complete the survey (elicitation tasks) in a standard fashion with no information treatment.
2) Treatment: Participants will receive treatment information. In this treatment, participants are provided with information (belief updating) about their peers’ responses (individuals of the same gender) to the same questions in an earlier survey round. Treatment information will be given in two different frames: one is by reporting the share of others suggesting mothers taking time off to care for a preschool child and the other is by reporting the share of others suggesting fathers taking time off to care for a preschool child. Note that it is the smae information treatment by framed differently.
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Secondary Outcomes (End Points)
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Before
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After
the outcomes by gender and SES
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