The most recent (2013) version of the American Psychiatric Association's classification system for mental disorders is called the

Which of the following indicate someone who has taken charge of their life?

a. I have many options from which to select in terms of my education, career, social circle, etc. b. My friends are better than I am at making efficient and sound decision. c. Sometimes I call in sick when I am healthy because I do not want to work or study. d. During times of stress, I feel as if my life is out of control.

Reinforcers that, when introduced, increase the frequency of the preceding behavior, are called

______ reinforcers. a. manifest c. negative b. positive d. latent