Emotional understanding advances from early to middle childhood because children ____
a. become able to understand not only their own emotions, but also the emotions of others
b. have formal training in school regarding emotions
c. are able to play sports and to be involved in athletics, which helps them appreciate their emotions and the emotions of others
d. they become intensely interested in making a good impression on members of the opposite sex
Answer: A
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In experimental psychology, the proportion of the top third of the class that correctly answered the last question of the final was .93 while .89 of the bottom third of the class answered correctly. The professor should decide not to include this question in the next final because the discrimination index indicates
a. negative discrimination. b. chance level performance. c. that students were incorrectly prepared. d. that the item does not discriminate well.
The sampling distribution of the variance is
a. positively skewed. b. negatively skewed. c. normal. d. rectangular.
In the early stages of shaping a rat to press a lever, the teacher would:
A. deliver a food pellet if the rat simply faced the lever B. feed the rat many food pellets to familiarize the rat with the reinforcer C. delay the delivery of food pellets to present a challenge to the rat D. wait for the rat to press the lever three times in a row before delivering a food pellet
In the male, __________ are produced when meiosis is complete
A) no sperm B) four sperm C) 40,000 sperm D) no sex cells