ERM covers 2 core models with broad application to CED theory, policy, and practice: Scientific-experimental: experimental & quasi-experimental designs, objectives based research, econometric cost-benefit & cost-effectiveness analysis, and theory-driven evaluation. Participant-oriented: client, stakeholder, consumer-oriented evaluation. Other models are introduced: Management-oriented systems: PERT (Program Evaluation & Review Technique), CPM (Critical Path Method), Logical Framework (Logframe developed by USAID), General Systems Theory, Operations Research, applied Program Review (used by NRC). Qualitative/ anthropological: observation, naturalistic evaluation (aka Fourth Generation evaluation), qualitative analysis, critical theory, and Grounded Theory. Prerequisite: CED801 or faculty permission.