78,420 rated or chosen profiles from 6,535 respondents, in up to 6 tasks of 2 profiles varying on 2 attributes.

About this table

Description	Swiss Environmental Panel members (wave 14, n = 6,535) compared two versions of the same consumer product (tomatoes, chocolate, laptop, smartphone, jacket or shirt) varying in price and environmental impact, 6 tasks; forced choice plus a 1-7 likelihood rating of each version.
Reference	Gomm et al. (2026). Comparing and combining theory of planned behavior and dragons of inaction to explain pro-environmental consumption behavior. Sustainable Production and Consumption.
DOI	10.1016/j.spc.2026.04.008
Licence	CC BY 4.0
Source data	https://doi.org/10.5281/zenodo.20008483

Notes

Conjoint table (irw_conjoint_2). choice = which of two versions of a product the respondent would buy (paraphrase; forced choice, no opt-out, 6 tasks); rating = 1-7 likelihood of buying each version (7 = very likely). Only price and environmental impact vary within a task; the product (6 types, assigned within a category arm) is trial_product. The authors' 0/1 rating dummy and all scales dropped; 298 panel members without conjoint rows absent.

These notes describe the source data, which the IRW reproduces as released. All notes are listed on the Data Notes page.

Size and shape

Respondents	6,535
Rows (one per respondent, task and profile)	78,420
Tasks per respondent (most)	6
Profiles per task	2
Attributes	2
Tasks with no profile chosen	0

Design

Topic	consumer products
A profile represents	product service
Country	CH
Language shown	unknown
Language of stored levels	en
Randomization restrictions	unknown
Task order	recorded in the deposit
Profile position	recorded in the deposit

Outcomes:

choice	Which of the two products would you buy? (paraphrase) [choice, forced]
rating	How likely are you to buy this product? (paraphrase; variable label conjoint_c<k>_prob_<j>) [rating, 1 (1 - Very unlikely) to 7 (7 - Very likely)]

Columns

attr_impactattr_pricechoicecov_agecov_age_groupcov_agglomerationcov_educationcov_gendercov_household_incomeidprofileratingtasktrial_producttrial_product_category

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.

Get the data

Download CSVno account needed Browse on Redivisexplore and query Croissant metadataHugging Face, Kaggle, OpenML

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("gomm_2026_sustainable_products", source = "conj")

# Python
pip install irw

import irw
df = irw.fetch("gomm_2026_sustainable_products", source="conj")

How to cite

@article{Gomm_2026, title={Comparing and combining theory of planned behavior and dragons of inaction to explain pro-environmental consumption behavior}, volume={66}, ISSN={2352-5509}, url={http://dx.doi.org/10.1016/j.spc.2026.04.008}, DOI={10.1016/j.spc.2026.04.008}, journal={Sustainable Production and Consumption}, publisher={Elsevier BV}, author={Gomm, Sarah and Blumer, Yann and Czellar, Sandor and Haasova, Simona and Kühne, Swen J. and Schubert, Renate and Bernauer, Thomas}, year={2026}, month=July, pages={1–17} }

Version and provenance

IRW version	v584
Redivis dataset	irw_conjoint_2 v1.4
Redivis dataset DOI	10.57761/hk97-wv30
Manifest pin for this IRW version	v1.4
Metadata source	irw_meta v44.0