PSYCH 1X03 Chapter Notes - Chapter 2: Type I And Type Ii Errors, Scientific Method, Operational Definition
30 Jan 2018
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Ob-ob mouse: over-obese mice; they are mutate so that their body converts most of the food into fats rather than into energy that they use, therefore, they will consume more food and become fatter. Operational definition: this describes the actions or operations that will be made to objectively measure or control a variable. Section 1: the scientific approach to psychology i. Newton"s four basic principle of the scientific method. Parsimony: when 2 equally good explanations are presented, scientist tend to choose the simpler one. Decided by numbers of assumptions that it presented: natural order: we will attribute the same effects to the same cause, generalization: ascribing the same effect to the same cause. Conservatism: support current explanation until new facts accumulate the the current explanation can"t deal with. Section 7: looking for flaws & evaluating research. Type i error: when we claim that iv manipulation had an effect when any difference between groups is really the result of sampling error.
