Here's the next series, which deals with your ability to concentrate and make decisions:
One: There was no change in your usual capacity to concentrate or make decisions.
Two: You occasionally felt indecisive or found that your attention wandered.
Three: Most of the time, you struggled to focus your attention or to make decisions.
Four: You couldn't concentrate well enough to read or you couldn't make even minor decisions.
(IF NEC: Which of these four statements was most true of you during your worst [(several days/two weeks)] of being [(sad/or/discouraged/or/uninterested)] in the past 12 months?