Persons with schizophrenia are randomly assigned to either an attention-training group or a social skills training group. Scores on a measure of thought disorder were examined after the end of the training sessions. is/are the independent variable(s) and is/are the dependent variable(s).

A. The treatment group; the thought disorder scores
B. Schizophrenia; the thought disorder scores
C. The thought disorder scores; the treatment group
D. The gender of the participants; the treatment group

A. The treatment group; the thought disorder scores                                                  

Explanation:

Independent variable: In research, the independent variable is described as a variable that is considered independent of any change and can be manipulated, changed, or altered by the experimenter in order to see its effect on the dependent variable.

Dependent variable: In research, the term dependent variable is defined as a variable that is considered as under control of the researcher and can be measured or tested by the researcher. If a researcher makes any change in the independent variable then it will affect the dependent variable directly.

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