Statistical and methodological errors are fairly universal in all the social sciences. This unique volume investigates the following questions: what are the most common errors, and how can they be avoided? Common Problems/Proper Solutions identifies and corrects these errors and provides clear statements concerning methodological issues. Long groups the problems into two broad types: omission where researchers fail to apply methods ideal to a topic; and commission where a technique is inappropriately applied. Each article addresses a specific aspect of these problems. This volume encourages further communication between methodological specialists and quantitative researchers, and highlights the important relationship between substantive research and statistical methods.