This document discusses hypotheses in research methods. It defines a hypothesis as a specific, testable statement of prediction about what is expected to happen in a study. The document outlines the assumption, nature, roles, importance, and characteristics of hypotheses. It discusses the sources and types of hypotheses, including simple, complex, directional, and associative hypotheses. Finally, it describes the uses of hypotheses in experimental, survey, historical, and complex causal research. Hypotheses guide research, focus studies, and allow theories to be tested through empirical investigation.