You might speculate that substance P evolved as a specialized pain signaling mechanism with a survival advantage, since substance P is only released during ___
a. Intense stimulation likely caused by more severe injuries
b. Mild stimulation caused by minor irritations and injuries
c. Instances of fight or flight
d. Times of reproductive readiness
A
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Megan just turned 32. She is keenly aware of biological changes that occur as she gets older. What's more, she measures the sensitivity of her senses and other physical characteristics by using sophisticated testing equipment
In which of the following areas is she likely to find some decline? a) vision and hearing b) sensitivity to odors and temperatures c) sensitivity to taste, muscular strength, and hearing d) sensitivity to taste, vision, and muscular strength
In order to eliminate the third-variable problem in correlational research, which of the following techniques can a researcher employ?
a. Case studies b. Placebo techniques c. Random assignment d. Matched samples