In comparison to an experimental design, quasi-experimental designs have an additional threat to validity through introducing the risk of producing:
A) Selection biases
B) Interaction effects
C) Effect size
D) Expectancy effects

Question

Quizplus · Accepted Answer

Quasi-experimental designs often lack random assignment, which can lead to selection biases, where differences between groups can affect the outcome rather than the manipulated variable.

In Comparison to an Experimental Design, Quasi-Experimental Designs Have an Additional