Imagine the following correlation: The more overweight the child, the slower his or her running speed. Given only this information, which of the following could be true?
a. Being overweight causes children to run slower.
b. Children who are slow runners are at a higher risk of being overweight.
c. Having respiratory problems (such as asthma) as a child can cause children to run slower and to become overweight.
d. Both A and B are possible.
e. All of the above could explain the correlation — the researcher would need to do more to find out if any are actually true.
e
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A numerical scale with a true zero point allows for values that are ratios of one another. This is known as a(n) ______.
A. ordinal scale B. nominal scale C. interval scale D. ratio scale
Following release from the presynaptic cell, neuropeptides a. cannot be deactivated by enzymes, whereas small-molecule transmitters diffuse away or are deactivated by reuptake. b. are deactivated by reuptake, whereas small-molecule transmitters diffuse away or are deactivated by enzymes. c. can diffuse away from synapses, whereas small-molecule transmitters are deactivated by reuptake
d. and small-molecule transmitters can be deactivated by diffusion, enzymes, or reuptake.
Alcohol probably produces its main effects by acting as an agonist at ________ receptors.
A. serotonin B. glutamate C. GABAA D. dopamine
The oldest continuously inhabited town is ____
a. Alexandria c. Jericho b. Rome d. Constantinople