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melomori [17]
2 years ago
12

Jared is conducting an experiment with ESP (extrasensory perception) training. He begins with a pretest of his 40 participants a

nd divides them into two groups based on their scores. The participants with the 20 lowest scores are given extensive training on how to detect the signals. The participants with the 20 highest scores are given no training. Both groups are retested and the average score of the participants with the training improved. Why can't Jared conclude that the training caused the difference?
a. testing effect

b. history effect

c. attrition / mortality effect

d. maturation effect

e. selection effect
Social Studies
1 answer:
MrMuchimi2 years ago
5 0

Answer: a. testing effect

Explanation:

Testing effect is a type of threat to internal validity of an experiment. Internal validity is assessing whether a factor makes a difference in an experiment or not and if it does, whether there is adequate evidence to support this correlation.

Testing as a threat to internal validity is when a second test is taken on the outcome of a first test. Other internal validity threats are history, maturation, instrument modifications.

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The Battle of Bunker Hill, occasionally being called the Battle of Breed's Hill, was an event that

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2 years ago
Faced with overlapping, unrealistic deadlines at work, Ivan recruits his friends to perform some of the routine clerical tasks a
AnnyKZ [126]

Answer:

Ivan is engaged in problem-focused coping.

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Coping is a strategy used in order to reduce stress.

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2 years ago
Most weekday mornings, Aleksander argues with his parents and refuses to get up and get ready for school. This causes him to be
vladimir2022 [97]

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child abuse

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4 0
2 years ago
According to erikson, children have _____, and thus believe that they can achieve any goal
ss7ja [257]

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djyliett [7]

Answer:

Goals                          

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