Mathematics, 11.02.2020 01:18, angiejtc0908
If we have learned to solve problems by one method, we often have difficulty bringing new insight to similar problems. However, electrical stimulation of the brain appears to help subjects come up with fresh insight.
In a recent experiment conducted at the University of Sydney in Australia, 40 participants were trained to solve problems in a certain way and then asked to solve an unfamiliar problem that required fresh insight. Half of the participants were randomly assigned to receive noninvasive electrical stimulation of the brain while the other half (control group) received sham stimulation as a placebo. The participants did not know in which group they were. In the control group, 20% of the participants successfully solved the problem while 60% of the participants who received brain stimulation solved the problem.
(a) Is this an experiment or an observational study?(b) From the description, does it appear that the study is double-blind, single-blind, or not blind?(c) What proportion of people who correctly solved the problem had the sham stimulation?
Answers: 2
Mathematics, 21.06.2019 14:50, alayciaruffin076
Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?
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Mathematics, 21.06.2019 21:00, edandjill24
Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.
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Mathematics, 22.06.2019 00:00, dragonslayer321
Yvaries inversely as x. y =12 when x=5. find y when x=4
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If we have learned to solve problems by one method, we often have difficulty bringing new insight to...
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