Answer this question to the best of your ability:
How did the researchers collect data on participants' mental health?
To gather information about participants' mental health, researchers typically employ standardized self-report measures or clinical interviews. In this case, they might have used well-known instruments such as the Patient Health Questionnaire (PHQ) for assessing depressive symptoms, the Generalized Anxiety Disorder (GAD-7) scale for measuring anxiety levels, and the Positive and Negative Syndrome Scale (PANSS) for evaluating overall psychopathology. These tools enabled them to systematically assess and quantify various aspects of participants' mental health status.