When you were learning to play the piano, you used EGBDF: Every Good Boy Does Fine to remember the lines of the treble clef. What memory strategy is this?

Which of the following is an example of a positive symptom of schizophrenia?

A. Carrie hears voices that tell her she is the devil's daughter. B. Jillian no longer experiences pleasure. C. Kiera responds to her family with a reduction in speech. D. Samaira stares into space for extended periods of time.

To study the effectiveness of a new anti-anxiety drug, researchers randomly assign equally anxious people to two groups, one getting Drug X and the other getting no drug. The researchers mistakenly conclude that Drug X works because people in the drug group show fewer signs of anxiety than the others. What is the mistake?

a. They never introduced an independent variable. b. They did not create a placebo control group. c. They never did a pretest of anxiety symptoms. d. They did not operationally define what the experimental group was.