The information needed to determine the internal and external validity of an experimental study is discussed. Internal validity is the degree to which a study establishes the cause-and-effect ...

Once you have determined your research question, the next step is to decide on a research design. As random assignment tends to be challenging in SoTL, most projects tend to fall into the ...

Methods are usually classified as either "experimental" or "observational," a dichotomy that has governed social science research for centuries. By implication, this dichotomization precludes a ...

We performed a systematic review of articles published during a 2-year period in 4 journals in the field of infectious diseases to determine the extent to which the quasi-experimental study design is ...

When randomised controlled trials are not possible to conduct due to feasibility, ethical, or policy reasons, quasi-experimental study designs can be used to evaluate the causal impact of health ...