65,520 rated or chosen profiles from 4,368 respondents, in up to 5 tasks of 3 profiles varying on 17 attributes.
| Description | Ethnic-Danish YouGov respondents (n=4,368, Feb-Mar 2022) saw 15 hypothetical male public-goods-game participants, three at a time (name: Danish or Middle Eastern, born in Denmark, religiosity, age, plus treatment-dependent information), chose who would contribute most and rated each one's expected contribution 0-10 (DKK 100 units). |
|---|---|
| Reference | Kruse, M. (2025). The correlates of ethnicity: Why the ethnic majority expects that ethnic minorities contribute less to the collective. British Journal of Political Science, 55, e70. |
| DOI | 10.1017/S0007123425000092 |
| Licence | CC0 1.0 |
| Source data | https://doi.org/10.7910/DVN/XKY5PI |
These notes describe the source data, which the IRW reproduces as released. All notes are listed on the Data Notes page.
| Respondents | 4,368 |
|---|---|
| Rows (one per respondent, task and profile) | 65,520 |
| Tasks per respondent (most) | 5 |
| Profiles per task | 3 |
| Attributes | 17 |
| Tasks with no profile chosen | 0 |
| Topic | social identity interpersonal |
|---|---|
| A profile represents | person |
| Country | DK |
| Language shown | unknown |
| Language of stored levels | en |
| Randomization restrictions | yes (stated by the source): born in Denmark depends on name: 90% of Danish-named profiles born in Denmark (Middle Eastern-named 50%); attributes shown depend on the information condition. Level weights: those conditional born-in-Denmark shares; other levels uniform (article) |
| Task order | recorded in the deposit |
| Profile position | recorded in the deposit |
Because the attribute levels were not randomized independently, an estimator has to account for the restriction; a plain difference in means across levels can mislead.
Outcomes:
| choice | Which of the three participants do you think will give the most money to the common pool? (paraphrase) [choice, forced] |
|---|---|
| rating | How much do you think this participant will give to the common pool? (paraphrase) [rating, 0 (DKK 0) to 10 (DKK 1,000)] |
attr_ageattr_bornattr_colorattr_drinksattr_educationattr_exerciseattr_gender_rolesattr_homosexual_marriageattr_nameattr_name_originattr_natureattr_petsattr_religiosityattr_residenceattr_tvattr_undeclared_workattr_work_statuschoicecov_age_groupcov_att_coopcov_att_naivcov_attention_pass_1cov_attention_pass_2cov_devicecov_educationcov_gendercov_gender_rolecov_homocov_household_incomecov_occupationcov_party_votecov_personal_incomecov_pol_interestcov_regioncov_relcov_rescov_survey_weightcov_undeclaredcov_welfareidprofileratingtasktrial_information
The layout (one row per respondent, task and profile; choice/rating outcomes; attr_ columns holding each attribute level as displayed) is defined in the IRW conjoint standard. What the outcomes asked is under Design above.
Or load it directly in R or Python (both need a free Redivis account; the first call opens a browser to sign in):
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("kruse_2025_expected_contribution", source = "conj")
# Python
pip install irw
import irw
df = irw.fetch("kruse_2025_expected_contribution", source="conj")
@article{Kruse_2025, title={The Correlates of Ethnicity: Why the Ethnic Majority Expects That Ethnic Minorities Contribute Less to the Collective}, volume={55}, ISSN={1469-2112}, url={http://dx.doi.org/10.1017/S0007123425000092}, DOI={10.1017/s0007123425000092}, journal={British Journal of Political Science}, publisher={Cambridge University Press (CUP)}, author={Kruse, Mathias}, year={2025} }
| IRW version | v584 |
|---|---|
| Redivis dataset | irw_conjoint v4.2 |
| Redivis dataset DOI | 10.57761/qkye-q530 |
| Manifest pin for this IRW version | v4.2 |
| Metadata source | irw_meta v44.0 |