Thorndike's experiments on problem solving in cats showed that the success of a correct movement had no effect unless food was provided as negative reinforcement
Indicate whether the statement is true or false
F
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What is one reason that the prevalence of dissociative identity disorder (DID) has been increasing?
A. Children in today's society are far more likely to experience severe trauma than they were in the past. B. DID has only recently received full acceptance by the psychiatric community, and thus professionals are now using this diagnosis. C. As of 1980, most insurance companies had to accept DID as a billable diagnosis. D. It may be that the prevalence of DID has not changed at all, but that clinicians may unknowingly encourage the emergence of new identities.
When you thread a needle, which of the following depth cues would be most important to you?
a. retinal disparity b. texture gradient c. accommodation d. convergence
Although Freud conceptualized the libido as the life energy within the id, many people think of it as the
A. death instinct. B. sex drive. C. conscience. D. Oedipal conflict.
The inability to attain an erection when desired __________
A) rarely occurs before age 50 B) is a sign of serious sexual dysfunction C) becomes more common in midlife D) is always a sign of declining testosterone