Psychiatrist: In treating first-year students at this university, I have noticed that those reporting the highest levels of spending on recreation score at about the same level on standard screening instruments for anxiety and depression as those reporting the lowest levels of spending on recreation. This suggests that the first-year students with high levels of spending on recreation could reduce that spending without increasing their anxiety or depression. Each of the following, if true, strengthens the psychiatrist's argument EXCEPT: ['The screening instruments used by the psychiatrist are extremely accurate in revealing levels of anxiety and depression among university students.', 'At other universities, first-year students reporting the highest levels of spending on recreation also show the same degree of anxiety and depression as do those reporting the lowest levels of such spending.', 'Among adults between the ages of 40 and 60, increased levels of spending on recreation are strongly correlated with decreased levels of anxiety and depression.', "Several of the psychiatrist's patients who are first-year students at the university have reduced their spending on recreation from very high levels to very low levels without increasing their anxiety or depression."]