QUASI EXPERIMENTAL DESIGN

Quasi Experimental Design

Quasi Experimental Design

Introduction

An experimental design is one in which participants are randomly assigned to levels of the independent variable. As we saw in our discussion of random assignment, experimental designs preferred when the goal is to make cause-and-effect conclusions because they reduce the risk that the results could be due to a confounding variable. Random assignment is not an option for these variables, but we still want to make cause-and-effect inferences. Quasi-experiments designed to maximize internal validity (confidence in cause-and-effect conclusions) despite being unable to assign. At the outset, it is important to know that quasi-experiments ...