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Field
Trial Start Date
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Before
November 07, 2023
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After
December 08, 2023
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Field
Trial End Date
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Before
December 20, 2023
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After
December 31, 2023
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Field
Last Published
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Before
November 15, 2023 12:47 PM
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After
December 07, 2023 03:50 PM
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Field
Intervention (Public)
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Before
The intervention is a randomized survey. Respondents are first asked questions about their views on politics, redistribution, and the labour market. The first group is asked questions on their views of how the minimum wage policy is set, and then asked to participate in the choice experiment. The second group is asked to participate in the choice experiment and then asked questions on their views of how the minimum wage policy is set. Finally, all respondents are asked demographic questions.
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After
The intervention is a randomised survey. Respondents are first asked questions about their views on politics, redistribution, and the labour market. The first group is asked questions on their views of how the minimum wage policy is set ("policymaking block"), and then asked to participate in the choice experiment (and follow-up block). The second group is asked to participate in the choice experiment (and follow-up block), and then asked to participate in the policymaking block. Finally, all respondents are asked demographic questions.
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Field
Intervention Start Date
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Before
November 07, 2023
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After
December 08, 2023
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Field
Intervention End Date
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Before
December 20, 2023
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After
December 31, 2023
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Field
Primary Outcomes (End Points)
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Before
Reported valuation of hypothetical increases in the minimum wage and associated trade-offs in the economy. Results will be analyzed by group--whether WTP varies based on whether information block (information on policy-making and questions on their views of minimum wage policy) are asked before or after the choice experiment. Results will also be analyzed alongside self-assessed political views, attitude to redistribution, demographics, views of economy and labor market, and views on beneficiaries of minimum wage.
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After
Reported valuation of hypothetical increases in the minimum wage and associated trade-offs in the economy. WTP will be calculated for each attribute and compared between attributes if possible. Results will be analysed by group--whether WTP varies based on whether the policymaking block (questions on views of minimum wage policy) are asked before or after the choice experiment. Self-assessed political views, attitude to redistribution, demographics, views and knowledge of economy and labor market, and views on beneficiaries of minimum wage will also be analysed, both on their own and alongside WTP estimates.. Misperception will also be analysed. Respondents will also be classified into social preference archetypes and analysed by type. Results will also be analysed by level of attention and response time to the survey tasks. For example and in-line with current research, based on attention and response time of respondents, the sample may be trimmed for outliers to response time and analysed.
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Field
Experimental Design (Public)
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Before
Each person will be randomized into two groups: information block before or after the choice experiment. The information block contains information on the independent body that advises the minimum wage rate in the U.K. In the same section, following the video, each respondent will be asked their opinions on how the minimum wage policy is and should be set.
Each person will also receive a random subset of questions related to their views on the labour market and broader economy.
The choice experiment is structured as follows: There are 5 attributes, each of which have between four and 16 levels. The respondents are shown two scenarios at a time that vary randomly in levels of severity of the same attribute, and asked to indicate a choice probability between choosing each option. They will be shown 13 examples of two scenarios (two of attribute one, two of attribute two, three of attribute three, two of attribute four, and four of attribute five). Two additional examples of the same scenario are shown, which serve as attention checks.
Finally, respondents are asked to answer question that asks their preference for a minimum wage policy change based on trade-offs for every attribute they have been shown, which vary randomly in levels of severity and redistributional group.
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After
Each person will be randomised into two groups: policymaking block before or after the choice experiment. The policymaking block asks opinions on how the minimum wage policy is and should be set.
The choice experiment is structured as follows: There are 6 attributes, each of which have either four or five levels. The respondents are shown two scenarios at a time (in one choice set) that vary randomly in levels of severity of attributes, and asked to indicate a choice probability between choosing each option. They will be shown 9 choice sets in three blocks. The order of choice sets is randomised within block, as are the order of each option within a choice set. Some choice sets are required while others are presented as a randomised subset. Two additional examples of the same scenario are shown, which serve as comprehension checks.
Finally, respondents are asked to answer question that asks their preference for a minimum wage policy change based on trade-offs for every attribute they have been shown, which vary randomly in levels of severity and redistributional attribute. Respondents see a randomised subset from the pool of possible sliders.
All choices, both in the choice experiment and in all other blocks, have a randomised order (or randomly flipped order) of responses to minimise order bias (where possible).
There are two attention checks near the beginning of the survey. If respondents fail both they are rejected from the study, in-line with survey platform guidelines.
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Field
Randomization Method
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Before
Randomization done within-survey by Qualtrics.
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After
Randomisation done within-survey by Qualtrics.
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Field
Planned Number of Clusters
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Before
1
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After
The treatment is not clustered.
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Field
Planned Number of Observations
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Before
820
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After
820 respondents
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