APA 2180 Lecture Notes - Lecture 12: Concurrent Validity, Convergent Validity, Internal Validity
4 Mar 2019
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Document Summary
Validity: the extent to which an indicator really measures the concept. Determinants (epidemiology): defined characteristics associated with change in health. Internal validity: is considered the basic minimum for experimental research. Randomization: the solution to getting two groups as similar as possible is to allocate subjects using some random system, by tossing a coin maybe: heads they go to the treatment group, tails to the control group. Frequency also includes the number of existing cases, the number of new cases and the death rate as well. Seeing how many health problems are in a population. Monitoring how good the prevention strategies are. Measurement to deviate from the true value. Selection bias (people who are selected vs people who are not selected) Randomized control trial (top of pyramid in experimental studies, for cause and effect) True experiment research (controlled, involve treatments of subjects) Non-experimental research (involve no treatment of subjects) Something is being manipulated on a health outcome.
