Evidence-Based Practice Flashcards
Independent Variable
activity or factor believed to bring about change in dependent variable
Dependent Variable
change or difference resulting from intervention; outcome
Null hypothesis
no relationship exists between variables
Data types: Nominal, Ordinal, Interval, Ratio
Nominal: categories based on characteristics (male/female)
Ordinal: ranked categories (GPA, MMT)
Interval: classified based on scale w/o true zero
Ratio: classifies based on equal interval true zero
Effect size
the size of differences between sample means
generalizability
degree at which the study’s findings based on a sample apply to the entire population
internal validity
the degree to which the observed differences on the dependent variable are a result of manipulation of the independent variable
external validity
the degree to which the results are generalizable to individuals outside the study
face validity
the assumption of validity based on the appearance of an instrument as a reasonable measure.
content validity
the degree to which an instrument measures an intended content area
concurrent validity
teh degree to which the scores on one test are related to the scores on another test
predictive validity
the degree to which a test is able to predict future performance
construct validity
the degree a test measures intended hypothesis
hawthorne effect
the subject’s knowledge of participation in an experiment influences the results
interrater reliability
the degree 2 or more raters can get same rating
intrarater reliability
one rater, multiple ratings
test-retest reliability
test is stable over time
split-half reliability
one half of test compared to the other for internal consistency.