Which hormone tends to arouse the body and is associated with fear?
a. melatonin
b. epinephrine
c. norepinephrine
d. estrogen
B
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There are many jokes out there about the advantage that having opposable thumbs gives human beings over most animals. As your authors note, however, it is not until the age of ____ that children actually start to use their thumbs as part of the grasping process!
a. 3–4 months b. 5–6 months c. 7–8 months d. 9–10 months
Pedro is infected with the bacteria Streptococcus pneumoniae. Pedro's white blood cells generate what substance in response to the Streptococcus pneumoniae to help Pedro's body fight off the infection?
A. antibodies B. antigens C. antidotes D. antibactercides
Who is likely to be the least appropriately gender typed?
a. Sarah, who was raised by a lesbian couple b. Jim, who was raised by a gay couple c. Maddie, who was raised by a single dad d. Allen, who was raised by a single mom
The grid floor in an operant chamber is electrified. Each time a rat presses a lever, however, the shock is turned off for 1 minute. The rat quickly learns to press the lever the second that the grid becomes electrified. Lever pressing has been:
A) positively reinforced. B) negatively reinforced. C) positively punished. D) negatively punished.