An independent samples t-test was performed comparing the mean logic scores of college students suffering with schizophrenia and college students who were not suffering from schizophrenia. As predicted, people with schizophrenia (M = .76, SD = .20) were more illogical than the college students without schizophrenia (M = .17, SD = .13), t(17) = 7.53, p=.003, d = 1.5,95 % CI [.43, 76].

What is the independent variable? What are the levels?

What is the dependent variable?

How many people were included in the analysis? How do you know?

Is the effect size considered small, medium, or large? How do you know?