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Lecture 8 - Scientific Method II

Lecture 8 - Scientific Method II - Poly Sci Lecture 8...

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Poly Sci Lecture 8 Outline: Scientific Method (cont.) - Quick Review - Theory - Theories and Models - Hypotheses - Hypothesis Testing - Formulating Hypothesis - Five steps involved in hypothesis testing Basis of Explanation: Theory - Theory: an explanation of how we think the world works - A theory makes a generalization (or a set of generalizations) that seeks to explain relationships between variables. - Key qualities of theories: o Theories can be Falsifiable o Parsimony: To explain as much as possible with as little as possible The preference for the least complex explanation for an observation Theories and Models - Theory: o A generalization (or a set of generalizations) that seeks to explain relationships between variables. - Model: o Represents and describes reality in simplified/abstract terms o Is derived from a theory o Causal models specify causal relationships between variables - Example: o Research question : Why do Congressmen vote the way they do?
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