This document discusses the concepts and processes involved in theory building for business research. It defines key terms like concepts, propositions, hypotheses, variables, and levels of abstraction. Concepts are abstract ideas that represent classes of objects or occurrences, and are building blocks for theories. Propositions are statements about relationships between concepts. Hypotheses, which exist at the empirical level, are testable statements about relationships between variables. The scientific method involves using both deductive and inductive reasoning to develop theories through increasingly abstract conceptualization, then empirically validating those concepts.