A critical difference between quasi-experimental/correlational investigations and experiments is that only __________.

A) true experiments examine real-world questions
B) quasi-experimental/correlational investigations study real-world questions
C) experiments involve a change or manipulation
D) correlational and quasi-experimental investigations involve a change or manipulation

Quasi-experimental

A research design that attempts to establish cause-and-effect relationships but lacks random assignment of participants to control or experimental groups.

Correlational Investigations

Research methods that explore the relationship or association between two or more variables without determining causality.

Experiments

Controlled procedures carried out to investigate relationships between variables, often to test a hypothesis.