kk {MLDS}R Documentation

Difference Scale Judgment Data Sets

Description

Three data sets for one subject in a sample difference scaling experiment. The stimuli were scatterplots of bivariate Gaussian samples with different correlations. The function runSampleExperiment was used to collect the data.

Usage

        data(kk1)
        data(kk2)
        data(kk3)

Format

Three data frames, (kk1, kk2, kk3) with 330 observations each with the following 5 components.

resp
a numeric vector taking on values 0 and 1 indicating responses of observer
S1
a numeric vector, rank order of weakest stimulus on the physical scale.
S2
a numeric vector, rank order of physical stimulus 2.
S3
a numeric vector, rank order of physical stimulus 3.
S4
a numeric vector, rank order of strongest stimulus on the physical scale.

Details

The datasets were generated on three separate days using the function runSampleExperiment with DisplayOneTrial and DefineMyScale to define the stimuli and display them, anti-respectively. The experiments were run on a Macintosh Pro with a 15 inch screen. The observer was seated about 40 cm from the screen.

Examples

data(kk1)
plot(mlds(SwapOrder(kk1))) # Fit and plot difference scale for first data set kk1

[Package MLDS version 0.1-7 Index]