Knowra Positive economics Positive economics Positive economics studies economic phenomena through descriptive claims that can be tested against evidence. It distinguishes explanations of how economies work from judgments about what economic outcomes ought to be.
Normative economics : Normative economics evaluates economic outcomes and policies using judgments about what ought to be. It supplies the value judgments that positive economics deliberately distinguishes from descriptive claims.
Causal inference : Methods for estimating whether changes in one factor cause changes in another. It helps distinguish causal economic explanations from mere observed correlations.
Economic model : A simplified representation of economic choices, relationships, or institutions used to explain or predict outcomes. Positive economics commonly expresses explanations as models with observable implications.
John Neville Keynes : A British economist whose 1891 book distinguished positive, normative, and applied political economy. His classification gave an early systematic form to the distinction central to positive economics.
Positive–normative distinction : The distinction between descriptive claims about what is and evaluative claims about what ought to be. This boundary defines positive economics while clarifying that policy analysis often combines both kinds of claim.
Econometric model : A statistical model that represents economic relationships and estimates them using data. Econometric models turn hypotheses about economic mechanisms into testable relationships.
Economic theory : An organized set of concepts and propositions explaining patterns in economic activity. Theories provide the connected explanations that positive claims test in parts.
Milton Friedman : An American economist known for influential work on monetary theory, methodology, and economic policy. His 1953 essay argued that economic theories should be judged by the predictions they generate.
Value judgment : An evaluation that ranks outcomes or actions as better, worse, right, or wrong. Value judgments enter economic recommendations but are not established by positive evidence alone.
Economic hypothesis : A proposed, testable claim about economic behavior or outcomes. Positive analysis begins with hypotheses whose implications can be compared with observations.
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