Please download the most recent version of the observation software (currently "observation_programs_2.75.6_install.exe"). Older versions of the software, located in the current directory and the "Analysis of observational data" folder, are only present to help track the total number of downloads -- more than 1,800 since March 2009. (Unfortunately, when an old file is deleted, its download counts are lost.) I would be happy to have help preparing French and Spanish versions of the software and manual. Effect size calculators and converters are provided as a convenience when reading the published research literature. They are not needed for the behaviour analysis programs, which provide their own measures of effect size and significance. This set includes programs to convert d, t, and odds-ratios to r, chi-square to V and F to eta-square, to calculate confidence intervals for r and Cronbach's alpha, to test the omnibus null hypothesis that all comparisons in a set are zero, and to test the difference between two correlations. Please download the latest version, "effect size calculators 1.3_install.exe". Please contact me at wlroberts@tru.ca if you have questions or suggestions. My thanks to Dr. Debra Pepler, York University, Canada, for feedback on early versions of these programs, and to Dr. Susanne Denham, George Mason University, USA, for feedback on recent versions. Dr. William L. Roberts 2 May 2013
The analysis of observational data Files
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