This volume evaluates learning gains, learning problems, and pedagogical climate related to the elementary school social studies curriculum, "Man: A Course of Study" (MACOS). MACOS, a behavioral/anthropological curriculum, is intended to help elementary school children understand differences and similarities between man and other animals by investigating questions such as what makes man human? how does a group survive? what does dependency mean? and what makes a good parent? The document is presented in three sections. Section I introduces the report and presents an overview of MACOS' development and objectives. In addition, an outline is presented of data in volumes I and II of the report. Section II presents transcripts and interpretations of interviews with students who have participated in a course based on the MACOS curriculum. The basic objective of the interviews was to encourage students to express in their own words how they used MACOS ideas and materials. Section III offers quantitative analysis of results of tests of students in MACOS and non-MACOS social studies courses. Emphasis is placed on factors delineating the environment in which MACOS was taught, children's interpretations of course emphases, and patterns of student responses. (DB)