RESEARCH DESIGNS
EXPERIMENTAL DESIGNS
When the Research Question Deals “with what happens if”
Experimental Designs-random assignment
QUASIEXPERIMENTAL DESIGN no random assignment to groups
Causality
EXPERIMENTATION
LOGIC OF A TRUE EXPERIMENT
Experimental Designs
Pretest-postest experiment
Solomon Four group
Postest Only
Repeated Measures
FACTORIAL DESIGN
Advantages of Experiments
Disadvantages of Experiments
quasiexperimental designs
Nonequivalent control group
Postest only-nonequivalent control group
Time Series-non equivalent groups
Time series design
Crossover design
Advantages of Quasi-Experiments
Disadvantages
EVALUATION RESEARCH
objectives:
Nonexperimental designs
DESCRIPTIVE/EXPLORATORY SURVEY
Descriptive/Survey Research
Descriptive Surveys
Descriptive Correlational Studies
advantages
Disadvantages:
EX POST FACTO DESIGNS
Types of Ex Post Facto Studies
advantages:
disadvantages:
Methodological Research
METAANALYSIS-synthesis of research findings
Email: rosemary schiller@villanova.edu