---
title: "psychological_pertubation_description"
output: html_document
date: '2022-01-12'
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

## Dataset description

**Psychological Pertubation data set**


### Description

This dataset contains data from 30 participants who completed the same questionnaire on meat consumption 12 times. We perturbed the participant’s opinion on each of the 11 items and measured to what extent this changed the participant’s scores on the questionnaire. It is a unique dataset that can be used for several purposes. The questionnaire data can aid research that aims to infer causal relations between variables.

The "Ground Truth" was obtained by the conditional invariant prediction method applied to the data on attitudes of meat consumption, see

- Waldorp, Lourens & Kossakowski, Jolanda & Maas, Han. (2021). Perturbation graphs, invariant prediction and causal relations in psychology. DOI:
https://doi.org/10.48550/arXiv.2109.00404


### Usage in R

### Format

The data set contains the following 11 variables:

    moral (Eating meat is morally wrong): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    nutr (Meat contains important nutrients for your body): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    envir (The production of meat if harmful for the environment): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    infer (Animals are inferior to people): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    suff (By consuming meat you contribute to animal suffering): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    tax (There should be a tax on meat): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    taste (I like the taste of meat): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    death (Meat reminds me of death and suffering of animals): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    sad (If I had to stop eating meat I would feel sad): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).

    guilty (If I eat meat I feel guilty): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).
    
    disg (If I eat meat I feel disgust): a six-level factor with levels 1 (completely disagree) to 6 (completely agree).
    
    
### Source

Hoekstra, R. H. A., Kossakowski, J. J., & van der Maas, H. L. J. (2018). Psychological Perturbation Data on Attitudes Towards the Consumption of Meat. Journal of Open Psychology Data, 6(1), 3. DOI: http://doi.org/10.5334/jopd.37


