Asked by Sukhwinder Singh on Jul 29, 2024
Verified
To examine the value of looking at old tests, Professor King hands out copies of old tests to the first 20 students who come to class one day. Later she finds that these students got better grades than the other students in the class. What is wrong with this experiment?
A) It was triple blind.
B) There is a lack of random assignment to groups.
C) There is a lack of demand characteristics.
D) The Clever Hans effect occurs.
Random Assignment
A method used in experiments to distribute participants randomly across different groups to ensure unbiased results.
Demand Characteristics
Implicit cues in an experiment that influence the participants' behavior towards a particular outcome.
- Comprehend how the use of random assignment increases the reliability of outcomes in experimentation.
- Analyze the shortcomings and limitations of experimental designs.
Verified Answer
EM
Elise MartinezAug 01, 2024
Final Answer :
B
Explanation :
The experiment lacks random assignment to groups, meaning that the group of students who received old tests could have been inherently different from the other students in the class. This could account for the difference in grades rather than the use of old tests. The other answer choices do not apply to this situation.
Learning Objectives
- Comprehend how the use of random assignment increases the reliability of outcomes in experimentation.
- Analyze the shortcomings and limitations of experimental designs.
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