SOCI 2150Y Lecture Notes - Lecture 7: Dependent And Independent Variables, Scientific Control, Time Series
Document Summary
Quantitative research: focus on experimental designs in research. Probability sampling: technique wherein the samples are gathered in a process that gives all the individuals in the population equal changed of being selected. Randomization: technique for assigning participants to experimental or control groups randomly (problematic for small sample studies) Matching: a procedure e experiment itself whereby pairs of subjects are matched on the basis of similarities on one or more variables; one member of the pair is assigned to the experimental group; one to the control group. Internal invalidity: refers to the possibility that the conclusions drawn from experimental results may not accurately reflect what went on in the experiment itself. External invalidity: refers to the possibility that the conclusions drawn from the experimental results may not be generalizable to the real world". Pre-experimental designs": pre-experimental designs", one-shot case study design , one-group pre-test/post-test design, static group comparison, field" experiments, web-based experiments, natural experiments .
