Question

The key difference between an experimental and a quasi-experimental study is that the quasi-experimental study ________.

A) does not appear to be an experimental study, but it has all of the characteristics of one

B) contains an independent variable

C) has multiple dependent variables

D) does not involve random assignment

Answer 1

A quasi-experimental study differs from an experimental study in that it does not involve random assignment of subjects to treatment groups, which limits its ability to establish causality.

Step-by-step explanation:

The key difference between an experimental and a quasi-experimental study is that the quasi-experimental study does not involve random assignment. In an experimental study, subjects are randomly assigned to control or treatment groups, which helps to eliminate lurking variables and establish a causal relationship. Conversely, a quasi-experimental study lacks this randomization, often due to ethical or practical constraints, and therefore cannot establish causality with the same level of certainty.