Examlex
Compare rheumatism with osteoarthritis.
Alternative Explanations
Different reasons or theories proposed to explain the same phenomenon, especially when the original explanation is challenged.
True Experiment
A type of scientific experiment where the researcher manipulates one variable and controls/randomizes the rest to observe the effect on a dependent variable.
Quasi-Experiment
A research design lacking random assignment of subjects to experimental and control groups, yet employing intervention and examination of its effects.
Random Assignment
A method used in experiments that randomly allocates participants to different groups in order to eliminate bias and ensure the groups are comparable.
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