ap psych key terms unit one

correlational research

research that investigates the relationship between two variables that occurs naturally

longitudal studies

studies that happen over a long period of time with the same subjects

cross-sectional studies

test a wide array of subjects from different backgrounds to increase geralizability

conceptual definition

theory or issue being studied

operational definition

the way in which the theory will be directly observed (think how it will be measured)

internal validity

certainty with which results are attributed to the manipulation of independent variable rather than confounding

external vadility

extent to which it’s generalizable

type one error

false positive

type two error

false negative