PSYC 340 Lecture Notes - Lecture 19: Design Of Experiments
6 Oct 2020
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Document Summary
The experiment allows for determination of a causal relation between two variables. Random assignment of subject to experimental conditions. Manipulation of an independent variable (iv: believed to be a causal variable) Manipulation of a dependent variable (dv: assumed to be controlled by the iv) Rigorous study of single cases over varied experimental conditions and time. Key is repeated measurement and evaluation of variability, A case study includes historical and biographical information on a single person. Used to provide a detailed description of a rare phenomenon. Cross-sectional studying subjects at one point in time conserving researcher"s time and providing immediate data. Observation that people of different age groups differ in their values and experiences. Longitudinal-studying the same subjects over a period of time allowing for greater scope of evaluation. Dropout or loss of participants during an experiment or during a clinical trial, which may cause imbalance in groups.
