This document discusses the key social science disciplines of anthropology and economics. It provides an overview of their definitions and main areas of focus. Anthropology is defined as the study of humankind and examines aspects of human existence and culture. Its main branches are cultural anthropology, linguistic anthropology, biological anthropology, and archaeology. Economics is defined as the study of efficient allocation of scarce resources to satisfy human needs and wants. It is divided into microeconomics, which focuses on individual choices, and macroeconomics, which examines entire economies. The document also outlines some important principles and methods of research within each discipline.