In a single-group design in which treatments are alternated (ABAB design) , what is the purpose of conducting multiple initial observations before any treatment is given?
A) pretest researcher assumptions about the study sample
B) establish a baseline for comparison post-treatment
C) establish which group gets the initial "A" treatment
D) to gather information for modifying the treatment
Correct Answer:
Verified
Q12: Suppose an experimental classroom has research observers
Q13: If a pretest causes a change in
Q14: Which of the following factors is primarily
Q15: A researcher administers a standardized test to
Q16: What is the name of the type
Q18: What is a major advantage of the
Q19: What is a major threat created by
Q20: What is a "confound" in an experimental
Q21: What is the placebo effect?
A) improvement based
Q22: What is the "John Henry" effect?
A) improvement
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