Multiple Choice
During the first quarter of his freshman year in high school,Dinky received a very low score on a vocabulary test.Three months later Dinky took test again,and he scored much higher on the test.Dinky's improvement can be explained by:
A) maturation
B) regression toward the mean
C) testing effects
D) all of the above (all are good explanations)
Correct Answer:

Verified
Correct Answer:
Verified
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