Software for Meta-analysis of Single-Case Design

With funding from the Institute of Education Science (IES) grants, colleagues and I have developed software pertinent to the analysis and meta-analysis of single-case designs. This includes

1. The DHPS SPSS macro, which will compute Hedges's g and associated statistics for multiple baseline designs and reversal designs (e.g., AB, ABAB). The macro is called with script.

 2. An SPSS graphical user interface for the macro (DHPS.spd). To install it, left-click DHPS.spd, and you will see a popup that asks what you want to do with the file. Click install, and it will install to the Analyze menu, from where you can use it simply by clicking on it.

3. A Power macro (D_Power.sps) to estimate power for ABk and multiple baseline designs.

4. An SPSS graphical user interface for the macro (D_Power.dpd). To install it, left-click DHPS.spd, and you will see a popup that asks what you want to do with the file. Click install, and it will install to the Analyze menu, from where you can use it simply by clicking on it.

5. A manual to help you get started using these tools.

We will update the software as needed. Please read the manual carefully, particularly regarding the required setup for the data in the SPSS Data Editor. Even minor errors in that setup will cause the program to crash.

Relevant references for the software include:

Hedges, L.G., Pustejovsky, J., & Shadish, W.R. (2012). A standardized mean difference effect size for single-case designs. Research Synthesis Methods, 3, 224-239.

Hedges, L.G., Pustejovsky, J., & Shadish, W.R. (in press). A standardized mean difference effect size for multiple baseline designs across individuals. Research Synthesis Methods

Shadish, W.R., Hedges, L. V., Pustejovsky, J. E., Boyajian, J. G., Sullivan, K. J., Andrade, A., & Barrientos, J. L. (in press). A d-statistic for single-case designs that is equivalent to the usual between-groups d-statistic. Neuropsychological Rehabilitation. DOI:10.1080/09602011.2013.819021

Recommended Releases

Version Package Date
DHPS version March 7 2015 Download (717.69 KB) Release info Mar 7 2015

Recent Releases

Version Package Date
DHPS version Aug 8 2014 Download (718.16 KB) Release info Aug 8 2014
Version 1.11 Download (722.99 KB) Release info Nov 9 2013