When two variables increase and decrease together.

The participants in research who serve as the baseline for comparison.

The school of thought based on the premise that psychological practices can only be based on what is observable.

As miles driven in a car increases, the gallons of gas remaining decreases.

In testing the effects of different kinds of light on plant growth, plant growth would be the...

The research method in which the researcher does not at all interfere with or try to control any part of the research.

The participants in research who receive the experimental treatment to measure its effects.

When researchers meet with participants at a study's conclusion to reveal information and ensure their well-being.

One of the first people to advocate for the better treatment of the mentally ill.

Indicated by p-value

The type of graph that depicts the direction and strength of a correlation

The first person to study the unconscious mind through psychoanalysis and free association.

A variable outside of what is being controlled in the experiment that has an unwanted effect on the results.

Research must maintain utmost protection of all participants’ information and identity.