testinfo_data_PICTo: testinfo_data_PICTo

In bpoconnor/IRTtestinfo: IRTtestinfo

Description

A data frame with IRT test information coefficients and the corresponding z values for the Psychological Inventory of Criminal Thinking Styles, based on responses from 2872 participants (Walters et al., 2011). The z values are in the first column and the test information values are in the second column.

Usage

data(testinfo_data_PICTo)

Source

Walters, G. D., Hagman, B. T., & Cohn, A. M. (2011). Toward a hierarchical model of criminal thinking: Evidence from item response theory and confirmatory factor analysis. Psychological Assessment, 23, 925-936.

Examples

head(testinfo_data_PICTo)

plot(testinfo_data_PICTo, type="l", 
     ylim=c(0,(max(testinfo_data_PICTo[,2])+1)), 
     xlim=c((min(testinfo_data_PICTo[,1])-1),(max(testinfo_data_PICTo[,1])+1)), 
     xlab="Latent Trait", ylab="Test Information", 
     main="Test Information Function for the NEO-FFI-A Scale", font.lab=2, cex.lab=1.3)
## Not run: 

bpoconnor/IRTtestinfo documentation built on Sept. 18, 2020, 11:47 a.m.