An in-depth study of the process of adaption among Peace Corps volunteers in Brazil and cross-cultural training methodology is presented in this volume, the first of two reports resulting from the project. Since ultimate aims of cross-cultural learning tend to be described in abstract terms, the fundamental issue had to do with specifying and clarifying these aims: terminal and enroute training objectives, assesment of outcomes, and design and implementation of learning strategies. In addition, the study investigated the relative importance of and interrelation among the domains of affect (feelings), behavior (activity), and cognition (knowledge) as they relate to adaptation. Four project tasks are identified and graphically described in each of four chapters which (1) outline a general characterization of the adapted Peach Corps volunteer, (2) recommend a new set of cross-cultural training objectives, (3) provide suggested guidelines or improvements for cross-cultural training/learning, and (4) present the cross-cultural learning measurement system, including instruments, scoring keys, and instructions. The second part of this report compiles the technical aspects detailing the work design, procedures, methods, and results of data analysis. (For related document, see Volume II, SE 016 527.) (BL)