KIN 3982 Lecture 2: 2:4 Notes
Document Summary
Experimental, non-experimental, and casual-comparative studies: control group: no treatment, experimental group: receives treatment, random assignment of participants, eliminates bias. Blind experiment: subject is not sure, research knows. Treatment + random assignment + post-treatment evaluation = experimental study. Quasi-experimental study: treatment and either a post-treatment evaluation or random assignment, but not both. Non-experimental design: observations are made, but no treatment or control or groups assigned: typically used when experimental conditions are not possible, practical, or ethical. Potential pitfalls: spurious relationships: a third unmeasured variable may explain why something is happening. It could be disguised by other possible factors as well.
