Why can we never be sure that a sample represents a population?
a. Random selection never works the way it is supposed to work.
b. Samples created by random selection are almost never perfectly representative.
c. A random sample may poorly represent a population, or it may accurately represent a different population.
d. If selection is conducted correctly, samples always accurately represent the populations they are supposed to represent.
C
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In the DSM-5 classification of mood disorders, an emphasis is placed on the distinction between
a. depressive and bipolar disorders. b. disorders with and without psychotic features. c. conditions precipitated by an identifiable stressor and conditions without identifiable stressor. d. disorders with somatic symptoms and disorders without somatic symptoms.
Melissa is often described by her teacher as a "model" child or unusually "good."
However, she also tends to have low self-esteem and is somewhat apprehensive, lacking in curiosity, and dependent on adults for approval. Melissa's parents are most likely using which parenting style? a. authoritative b. authoritarian c. overly permissive d. democratic