used to ensure that the experimental and control groups were equivalent on some criterion

The mean and median will be greater than the mode

An educated guess that derives logically from a theory; a prediction that can be tested

is a summary of how often different scores occur within a sample of scores

a broad idea or set of closely related ideas that attempts to explain observations & to make predictions about future observations

a type of reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed

a numerical measurement that describes a value's relationship to the mean of a group of values

What the experimenter manipulates/controls to see what the effects are of the experiment

Research in order to solve practical problems

experiments that are conducted out in the world

unconscious tendency for researchers to treat members of the experimental and control groups differently to increase the chance of confirming their hypothesis

The tendency upon hearing about research findings (etc.) to think that they knew it all along

when giving a drug to participants in the experimental group, participants in the control group are given an inert but identical substance

Research that explores questions that are of interest without real world application

Involves asking people to fill out surveys