Social science, the study of societies and human behaviour using a variety of methods, including the scientific method., Scientific method, a method which subjects theories or hypotheses to falsification by empirical evidence., Theory or model, a hypothesis which is capable of refutation by empirical evidence., Ceteris paribus, the assumption that, whilst the effects of a change in one variable is being investigated, all other variables are kept constant., Positive economics, the scientific or objective study of the subject., Positive statement, a statement which can be supported or refuted by evidence., Normative economics, the study and presentation of policy prescriptions involving value judgements about the way in which scarce resources are allocated., Normative statement , a statement which cannot be supported or refuted because it is a value judgement..

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