Lithium appears to work by affecting ________
a. hormone levels in the endocrine system
b. sodium levels in the blood
c. neurotransmitters in the brain
d. metabolism of proteins
Answer: c
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If the dots on a scatter plot show no discernible pattern (i.e., they do not seem to cluster around any line or have any direction), then the correlation depicted by the graph is probably a _____ correlation
a. perfect c. negative b. positive d. nonsignificant or zero
Unexpressed anger can lead to headaches, ulcers, depression, high blood pressure, and an increased risk of heart disease
a. True b. False
Your local newspaper publishes the result of a current scientific study that shows exercise is positively correlated with happiness. The correlation coefficient is +.72. Interpret what this result means.
What will be an ideal response?
Cognitive skills among children in __________ cultures appear to emerge on a different timetable than that seen in children living in the United States and Europe
a) non-Western b) South American c) Asian d) Western