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During the Course of Her Experiment, Yolanda Learned That 7

Question 18

Multiple Choice

During the course of her experiment, Yolanda learned that 7 of the 12 clients in her new 4-hour session had quit and walked out of the session before it was completed. What threat to internal validity does her experiment have?


A) experimental mortality
B) history effect
C) selection bias
D) maturation

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