IRDabove: Improvement Rate Difference (IRD) calculation

In SSDforR: Functions to Analyze Single System Data

Improvement Rate Difference (IRD) calculation

Description

This effect size function will compute the IRD and display a graph in the graph window.The desired improvemment is an increase in the baseline behavior.

Usage

IRDabove(behavior, phaseX, v1, v2)

Arguments

behavior	behavior variable
phaseX	phase variable
v1	first phase letter (e.g., "A")
v2	second phase letter (e.g., "B")

Author(s)

Charles Auerbach, PhD Wurzweiler School of Social Work Wendy Zeitlin, PhD Montclair State University

References

Auerbach, Charles, and Zeitlin Wendy. SSD for R: An R Package for Analyzing Single-Subject Data. Oxford University Press, 2014. p62-65, p136

Bloom, M., Fischer, J. & Orme, J.G. (2009). Evaluating practice: Guidelines for the accountable professional (6th ed.). New York: Pearson.

Parker, R. I., Vannest, K. J., & Brown, L. (2009). The improvement rate difference for single-case research. Exceptional Children, 75(2), 135-150.

Go to www.ssdanalysis.com for more information.

Examples

esteem<-c(3, 4, 2, 5, 3, 4, NA, 2, 2, 3, 2, 1, 2, NA, 2, 2, 1, 2, 1, 0, 0, 0)
pesteem<-c("A", "A", "A", "A", "A", "A", NA, "B", "B", "B", "B", "B", "B", 
NA, "B1", "B1", "B1", "B1", "B1", "B1", "B1", "B1")
IRDabove(esteem,pesteem,"A","B1")

SSDforR documentation built on Nov. 24, 2023, 5:08 p.m.