Recent studies have shown that ______ can learn to use numbers
a. only humans
b. dolphins and whales, as well as humans
c. rhesus monkeys, as well as humans
d. most animals
C
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Researchers are attempting to assess if cognitive behavioural therapy (CBT) is an effective treatment for depression. Participants with unipolar depression are assessed and then randomly assigned to either a treatment group or a control group. The treatment group receives CBT twice per week for 6 weeks. The control group receives no treatment. At the end of the 6 weeks, the depression levels of
both groups are reassessed. This study found that CBT treatment was more effective than no treatment but is limited because it did not control for: A) natural improvement. B) placebo effects. C) preexisting differences among participants. D) participant gender.
During most of his childhood, George was a bit on the pudgy side, but with the onset of puberty, he became categorically fat. Dieting did not seem to help, although George freely admitted that he was not very interested in dieting because eating was one of the things he truly enjoyed. He did not enjoy sports or other forms of exercise that left him out of breath, nor did he truly enjoy telling
"fat" jokes about himself and making people laugh, although his classmates at least seemed to like him for that. (a) From the text discussion of obesity, what factors might be involved in George's weight problem? (b) What self-fulfilling prophecies might be operating in George's case? What advice could we give him and his parents on helping him lose weight? What will be an ideal response?
Compared with P cells, M cells have a. smaller, slower axons
b. smaller receptive fields. c. the ability to respond to subtle contrast. d. the ability to respond to color.
Individuals who show the highest levels of BDNF are ______ likely to develop dementia and Alzheimer's.
A. 33% less B. 33% more C. 50% less D. 50% more