PSY 105 Lecture Notes - Lecture 3: Francis Bacon, Karl Popper, Operational Definition
23 Nov 2017
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Scientific method uses logical reasoning derived from philosophy. Sir francis bacon emphasized avoiding biases by doing research. Karl popper stressed that a good theory must establish (in advance) the observations that would refute it. *get ethics approval before moving to step 3. An operational definition is how we (the researcher) decide to measure our variables. Usually many ways to measure a variable (sense of humor) When you do research, you have to decide how you are going to measure the variables. Population: entire group of interest to researchers. Sample: portion of any population that is selected for study. Random selection: randomly choosing a sample from population. Sampling bias: choosing a sample that does not represent your population. Two major types of research: descriptive. Research method used to observe and describe behavior. Used to determine the existence of a relationship between the variables. To demonstrate a cause and effect relationship between the variables. An intensive study of 1 or 2 people.
