The purpose of this research is to provide an application for users interested in a SPSS syntax program to determine an array of commonly-employed effect sizes and confidence intervals not readily available in SPSS functionality, such as the standardized mean difference and r-related squared indices, for a between-group design.
Walker, David A.
"Two Group Program for Cohen's d, Hedges’ g, η2, Radj2, ω2, ɛ2, Confidence Intervals, and Power,"
Journal of Modern Applied Statistical Methods:
2, Article 21.
Available at: http://digitalcommons.wayne.edu/jmasm/vol14/iss2/21