Psychometric property that indicates how consistent results are
What is reliability?
100
A type of descriptive statistic that may be a better measure of central tendency when outliers are present.
What is the median?
100
Changes in a developmental variable that are due to the passage of time that influence the results
What is maturation?
100
A task that is too easy results in scores that are very high, disguising any differences.
What is ceiling effects?
100
A type of study that that usually involves expedited review because risks are no more than everyday life.
What is a minimal risk study?
200
A measurement scale in which data is divided into mutually exclusive categories which have an associated order.
What is an ordinal scale?
200
Rejecting the null when it is really true
What is a Type I error?
200
When events other than the IV accoutn for changes between pre and post testing
What is history?
200
A type of variable that involves already-existing attributes of a subject in a study.
What is a subject variable?
200
Deliberately taking someone else's ideas and claiming them as one's own.
What is plagiarism?
300
A continuous measurement scale which has a true zero and allows for all math computations.
What is a ratio scale?
300
Retaining the null when it is really false.
What is a Type II error?
300
Loss of subjects over time results in changes to group or individual performance that then affects the results.
What is attrition?
300
A type of validity that allows generalization beyond the experimental sample.
What is external validity?
300
A field that tries to associate itself with real science by relying heavily on anecdotal evidence, sidestepping disproof and reducing complex phenomena to overly simplistic concepts.
What is pseudoscience?
400
A measurement scale associated with categorical data, reported as names, frequencies or percentages.
What is a nominal scale?
400
A measure of variability that may be appropriate to use when outliers are present.
What is interquartile range?
400
Controls may act in an atypical way due to other benefits they are receiving from the study or because they know they are being observed or measured in some way.
What is special treatment or reaction of controls?
400
An uncontrolled extraneous variable that influences the DV
What is a confound?
400
A type of research design where for any 2 levels of an IV, the comparision is made between two different groups of subjects.
What is a between subjects design?
500
Measurement property inolving measuring what something is designed to measure.
What is validity?
500
Statistics that allow you to infer general conclusions and test your hypothesis based on sample data.
What is inferential statistics?
500
Extreme scores that revert to the average when a test is re-administered.
What is regression to the mean?
500
A way to solve the problem of creating equivalent groups by giving each subject an equal chance to be assigned to any group in a study.
What is random assignment?
500
A type of factorial design where there are two IVs, each with two levels.