Which of the following findings suggests that young infants develop an early understanding of quantitative relations?
a. Infants crawled to boxes that had the greatest number of crackers in them.
b. Infants pointed at arrays that had a greater number of dots.
c. Infants looked longer at impossible outcomes than at possible outcomes.
d. Infants matched very low numerals with their corresponding amounts.
C
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People hear a tone, followed by a puff of air to the eyes, which causes an eyeblink. After a few pairings, people blink their eyes when they hear the tone. What is the conditioned stimulus?
a. The tone b. The air puff c. Blinking d. The time between the tone and the air puff
Rafael's brother always says, "I'm going to get you," just before he hits Rafael. Alan's brother often says, "I'm going to get you," but doesn't always hit Alan afterwards. Based on the work by Rescorla, you should predict that when these boys hear the words, "I'm going to get you," Rafael will show
a. an unconditioned response, while Alan will show a conditioned response. b. a stronger conditioned response than Alan will show. c. a weaker conditioned response than Alan will show. d. a conditioned response, while Alan will show an unconditioned response.
Glial cells transmit information across long distances
a. True b. False Indicate whether the statement is true or false
What is the estimated prevalence of major depressive disorder in preschoolers?
a) .05% b) .25% c) 1% d) 2.5%