PSYCH-UA 1 Lecture Notes - Lecture 2: Discriminant Validity, Convergent Validity, Operational Definition
15 Aug 2016
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Document Summary
Two types of finding information: belief: think about it experience: experience it. Empiricism: the belief that accurate knowledge of the world requires observation of it problem with empiricism: sometime our senses are deceiving. Method: a set of rules and techniques for observation that allows us to conceive information. The theory that the larger the surface area of brain devoted to a specific body part, the more sensitive it is. Formula for measurement: abstract property define operational definition . Operational definition: specifies the observable conditions that define the concept. Threshold: how finely can you discriminate between two stimuli. Scientific conclusions depend on how a property was operationally defined and how it was measured theory: hypothetical account of how and why a phenomenon occurs hypothesis: testable prediction made by a theory. Samples population: the complete collection of people whose properties we wish to know sample: the people whose properties we actually measure.
