Before beginning a study on the health effects of obesity, a group of researchers agree that, for the purposes of their research, anyone with a Body Mass Index greater than 30 kg/m² will be considered obese. This is an example of _______________.
A) a confounding variable
B) an operational definition
C) convenience sampling
D) an appeal to common sense

Question

Quizplus · Accepted Answer

This is an example of an operational definition, which is creating a clear and specific definition of a variable for the purposes of research. In this case, the researchers are defining obesity as having a BMI greater than 30 kg/m².

Before Beginning a Study on the Health Effects of Obesity