Causal-Comparative Research Designs
http://www.tsum.edu/~trenckly/week3.htm
This site is part of the web site of Tom Renckly's online research methods course. There is a very good discussion of the following aspects of causal-comparative designs: purpose, identification, limitations, evaluation, as well as the evaluation of a causal-comparative journal article.
Causal-Comparative Research
http://www.cedu.niu.edu/~smith/causalcomp.htm
These lecture notes discuss the characteristics of causal-comparative research in a manner that is very consistent with the text.
Ex Post Facto Designs
http://plato.acadiau.ca/COURSES/PSYC/McLeod/2023Research/ex-post.htm
This is a brief introduction to ex post facto designs and the critical issues related to them.
Research Approaches
http://edweb.sdsu.edu/Courses/ED690DR/Class01/ResearchTypes.html
A short paper that offers a good comparison between several types of research designs.
Chapter 16: Causal-Comparative Research
http://www.mhhe.com/socscience/education/fw/sg/olc/16major.htm
This is a good bulleted list of the issues related to causal-comparative research.
