The estimated population standard deviation will be equal to zero when _____
a. a distribution is normal
b. the mean, median and mode all have the same value
c. all the scores in a distribution have the same value
d. a distribution is unimodal and symmetrical
C
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Studies on bipolar disorders suggest that ____
a. they are more common than depressive disorders b. they often coexist with other mental disorders c. men are more likely than women to suffer from bipolar II disorder d. relatives of individuals with both disorders are at equally high risk to develop both bipolar and depressive disorders
Researchers believe that permanently storing information in long-term memory involves chemical, functional, and ____ changes
a. biological c. social b. structural d. classical
The Minnesota Twin Studies have determined, as a result of years of research, that personality is entirely genetic and is not influenced by our surroundings or environment
Indicate whether the statement is true or false.
Which of the following statements is TRUE of process schizophrenia?
A. It is also known as Type II schizophrenia. B. It is characterized by the sudden and conspicuous onset of symptoms. C. It has proved more difficult to treat than reactive schizophrenia. D. It is primarily characterized by positive symptoms, such as hallucinations.