In probability calculus, a negation is the probability that:

A) an event will not occur
B) one event will cause another
C) the same event will occur twice
D) two events will both occur
E) one or the other of two events will occur

Maddie,age 4,has recently begun coordinating the two sides of her body more efficiently.This improvement can be attributed to:

A) the growth of her corpus callosum.
B) her arms and legs growing longer.
C) her brain's lateralization.
D) adequate calcium in her diet.

Which statement best reflects an example of regression toward the mean

A)  People who originally score near the average on some trait are measured a second time, and their new score falls at the extreme high or low end of the scale. 
B)  People who originally score extremely high or low on some trait are measured a second time, and their new score falls closer to the average. 
C)  People recover from a mental or physical illness without any form of intervention. 
D)  People's expectations lead them to experience some change, even though they receive a fake or ineffective treatment.

In one of the first social psychological experiments ever conducted, researcher Norman Triplett built a "competition machine," in which children wind up a fishing reel. He found that the children were able to wind more quickly when ____.

A) they worked as a group side by side than when they worked alone
B) they worked alone than when they worked as a group side by side
C) they were explicitly asked to work as fast as possible
D) they were explicitly asked to take their time to "get it right"

How is behavior therapy different than psychoanalysis?

A) Behavior therapy involves free association and dream analysis, while psychoanalysis focuses on the use of classical conditioning to change patterns of thinking.
B) In behavior therapy, a therapist employs principles of learning to help clients change undesirable behaviors, while psychoanalysis involves digging deeply into one's unconscious.
C) In psychoanalysis, a therapist employs principles of learning to help clients change undesirable behaviors, while behavior therapy involves digging deeply into one's unconscious.
D) Psychoanalysis involves using free association to work through repressed desires, while behavior therapy focuses on how undesirable behaviors are predicted unconsciously, in our dreams.

What term refers to the fear of open, crowded places?

A) Acarophobia
B) Agoraphobia
C) Acerophobia
D) Agraphobia