The period of sensorimotor intelligence, according to Piaget, comes to an end shortly after the first birthday
Indicate whether this statement is true or false.
False
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Although testing can identify substance use months after it occurred, its downsides are that the amount of drug a person took, and when a person took the drug, cannot be clearly established
a. urine b. hair c. blood d. spectrometry
Recognizing and reacting to individuals based on group affiliation was probably a very important skill for early hunter–gatherers, whose survival often depended on quickly identifying others as potential friends or foes. This categorization was made primarily on the basis of ____
a. ?levels of competence b. ?strength c. ?physical appearance d. ?levels of warmth
A normal, healthy animal never contracts the flexor muscles and the extensor muscles of the same leg at the same time. Why not?
A. When the interneuron sends excitatory messages to one, inhibitory messages go to the other. B. Both muscles are mechanically connected in a way that makes it impossible for both to contract at the same time. C. Such coordination is learned through prenatal movement. D. Both muscles are controlled by branches of the same axon.
A stimulus that does not produce an unconditioned response is known as
(a) a harmless stimulus (b) an unconditioned stimulus (c) a neutral stimulus (d) unscientific