PSYCH 111 Lecture Notes - Lecture 2: Sampling Bias, Sample People, Milgram Experiment
Document Summary
Theory: a systematic way of organizing and understanding observations. Hypothesis: a proposed relationship between two or more variables. Variable: anything which can be measured or described along a particular dimension. Continuous variable: a variable which can be measured across continuum. Categorical variable: a variable with a fixed meaning or attribute divorced family"s kids. Operationalize definitions: describes the actions or operations that will be used to measure or control a variable. Validity: does it measure what it is suppose to measure: is the measurement conceptually. Reliability: do you get consistent measurement results when repeated. related accuracy. Direct observation: daycare: little boy was looking around, divided attention. asking for his mother. noise in background. Systematic observation: explores changes in variables of interest. Independent variable: is manipulated by the experimenter but stays same through out experiment: age. Dependent variable: is measured to asses any change in response to the manipulation. Subjects: random sample which represents the population as a whole.
