Evidence-based management: the process of translating principles based on the best scientific evi- Research in organizational behaviour dence into organizational practices: by using evidence-based management, managers can make decisions based on the best available scientific evidence rather than personal preference and unsystematic experience. Hypothesis: a formal statement of the expected relationship between two variables. Variables: measures that can take on two or more values. Independent variable: the variable that predicts or is the cause of variation in a dependent variable. Dependent variable: the variable that is expected to vary as a result of changes to the independent variable. Moderating variable: a variable that affects the nature of the relationship between an independent and dependent variable such that the relationship depends on the level of the moderating variable. Mediating variable: a variable that intervenes or explains the relationship between an independent and dependent variable. Reliability: an index of the consistency of a research subject"s responses.