Experiment
Survey
Case Study
Observation
Correlation
Longitudinal
1. An operational definition allows anyone to replicate the experiment in the exact same way.
2. It also allows for an objective description of how a variable will be measured.
IV: vitamin
DV: IQ
Population: All USA college students
Sample: SC college students
This sample is NOT random.
Informed consent - all participants must know what their participation will involve and the potential risks
Confidentiality - researchers are responsible for keeping all data completely confidential and if possible anonymous.
Debriefing - after the study is complete, a researcher should tell the participants the purpose of the research and the methods used.
Deception - deception should only be used when the benefits outweigh the risks and there is no other way to test the hypothesis.