A research team is doing a study of the effectiveness of medication vs. psychotherapy for treating schizophrenia vs. bipolar disorder. Participants are randomly assigned to receive either medication or psychotherapy. Which of the following is a classificatory variable in the study?
A)Which treatment the participants received
B)The number of symptoms that improved as a result of treatment
C)The diagnoses given to the participants
D)The length of treatment

Question

Quizplus · Accepted Answer

The diagnoses given to the participants, whether they have schizophrenia or bipolar disorder, is the classificatory variable in this study as it is the basis for the grouping of the participants into the two categories being studied. The other options are not classificatory variables as they do not involve grouping or categorization of the participants based on a specific characteristic.

A Research Team Is Doing a Study of the Effectiveness