"Trade-offs" is an instructional television series of 15 programs designed to improve and expand economics instruction in fifth and sixth grade classrooms in the United States and Canada. This paper reviews 15 studies that have examined the impact of the "Trade-off" series, and seeks to determine how the series affects student and teacher knowledge of and attitudes toward economics and whether they enjoy the "Trade-offs" programs. The studies reviewed examined diverse variables and used a variety of designs and instruments. They include three studies on cognitive, attitudinal, and inservice training effects; one report on the development and validation of the Basic Economics Test; five local evaluations; and two studies of teacher and administrator ratings of the series. Findings led to the following conclusions: (1) the series significantly improves students' knowledge of and attitudes toward economics; (2) the series significantly improves teachers' attitudes toward economics; (3) student cognitive and attitudinal gains were further increased with teacher inservice training; (4) teacher attitudinal gains were further increased with inservice education; and (5) the series is appealing to students, teachers, and administrators. Notes, references, and a comprehensive chart of studies reviewed are included. (THC)