A researcher notices that there is a relationship between stress and sleep such that as stress increases, sleep decreases, but the researcher doesn't know if lack of sleep causes more stress or if higher stress levels cause people to sleep less. The relationship the researcher identified can best be described as a _____.
a. deterministic law
b. teleological law
c. causal law
d. correlational law
d. correlational law
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When we want to calculate the probability of the joint occurrence of two or more independent events, we invoke
a. the multiplicative rule. b. the additive rule. c. the sum of independent probabilities. d. Bernoulli's rule.
On average, the personalities of identical twins are no more alike than they are for fraternal twins
Indicate whether this statement is true or false.
As Tyler walks to his car late at night, he hears footsteps behind him. Feeling afraid, Tyler grips his keys and quickens his pace. It is likely that Tyler's __________ has been activated.
A. hypothalamus B. hippocampus C. amygdala D. cerebellum
In an fMRI study, when cocaine-addicted subjects experienced cocaine cravings, their brains showed greater activity in areas that become engaged when healthy subjects watch depressing videotapes.
Answer the following statement true (T) or false (F)