A study has found a positive correlation between smoking cigarettes and schizophrenia. What is a possible explanation for this finding?
a. Emotional problems experienced during childhood cause schizophrenia.
b. Some property of nicotine could be part of the cause of schizophrenia.
c. The gene that carries schizophrenia also increases the potential for smoking.
d. A fourth variable could be causing both.
Answer: b.
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Which form of consolidation is believed to take place within the first few hours after a piece of data has been learned?
a) grounded consolidation b) higher-order consolidation c) systemic consolidation d) synaptic consolidation
Why are groups often homogeneous (comprised of members who are alike in age, sex, beliefs, and opinions)?
a. People who are already similar to each tend to be drawn to joining the same groups. b. Evolutionary pressures caused people with similar genes to join groups and people with dissimilar genes to avoid each other. c. Groups are more productive when they are homogeneous. d. Social loafing prevents us from seeking out new people and experiences.