d.negposChoice {relevance}

Data of an 'anchoring' experiment in psychology

Description

Is a choice influenced by the formulation of the options?

Here is the question: Confronted with a new contagious disease, the government has a choice between action A that would save 200 out of 600 people or action B which would save all 600 with probability 1/3. This was the 'positive' description. The negative one was that either (A) 400 would die or (B) all 600 would die with probability 2/3.

The dataset encompasses the results for Penn State (US) and Tilburg (NL) universities.

Usage

data("d.negposChoice")

Format

A data frame with 4 observations on the following 4 variables.

uni

character: university

negpos

character: formulation of the options

A

number of students choosing option A

B

number of students choosing option B

Source

Klein RA, Ratliff KA, Vianello M et al. (2014). Investigating variation in replicability: A "many labs" replication project. Social Psychology. 2014; 45(3):142-152. https://doi.org/10.1027/1864-9335/a000178

Examples

data(d.negposChoice)

d1 <- d.negposChoice[d.negposChoice$uni=="PSU",-1]
(r1 <- twosamples(table=d1[,-1]))
d2 <- d.negposChoice[d.negposChoice$uni=="Tilburg",-1]
r2 <- twosamples(table=d2[,-1])