Chapter 4- Research Methods Flashcards
Research methodology
ways of obtaining info
Basic components of a study
- hypothesis
- research design
- independent variable
- dependent variable
- confounding variable
Control group
people in group not exposed to independent variable
Internal validity
study studies what you want it to
Statistical significance
less than 5% chance of error
Clinical significance
Whether something will actually help people
Patient uniformity myth
The idea that everyone with the same diagnosis are the same
Case studies
- not always relevant
- good for studying specific and rare things
Correlation Expression
- from -1 to +1
- stronger correlation the closer to 1
- positive means they move together
- negative means they move opposite
Epidemiological Research
-incidence and prevalence of problems in a population
Incidence
Number of new cases in certain time period
Prevalence
At one point in time, the # of people with a disorder
Single case experimental design
Experiment with one person
Multiple baselines
Treatments start at different times across settings
-improves internal validity
Endophenotypes
Phenotype related to a specific disorder
