The What Works Clearinghouse (WWC) identifies existing research on educational interventions, assesses the quality of the research, and summarizes and disseminates the evidence from studies that meet WWC standards. The WWC aims to provide enough information so educators can use the research to make informed decisions in their settings. This…

Presented as part of a symposium on evaluation on juvenile diversion programs, this brief paper describes several specific research procedures which have been utilized to help decide which type of diversion approach is best for specific types of clients. Procedures discussed are the regression discontinuity design, the tie-breaker design, and the…

Describes how the lost letter technique, a research ploy involving leaving stamped, addressed letters in public locations and seeing if people will mail them, may be used to introduce students to experimental method in sociological research. Students manipulated letter location, size, and address in order to judge different effects such variations…