Multiple Choice
With which of the following findings would a maturation threat be of most concern?
A) "Skills in long division showed marked improvement after three weeks of instruction in computer use."
B) "Third-grade reading scores demonstrated substantial gains after six months of perceptual training."
C) "Knowledge of history improved greatly after a year of inquiry training."
D) "Foreign language usage was greatly enhanced by two years' study in a language laboratory."
Correct Answer:

Verified
Correct Answer:
Verified
Q26: In which of the following is a
Q27: In an experimental study, a subject characteristics
Q28: Matching<br>-Subject characteristics threats<br>A) Age, gender, and class<br>B)
Q29: Matching<br>-Instrumentation threat<br>A) Age, gender, and class<br>B) Unreturned
Q30: Referring to the study in item 2
Q31: Loss of subjects is a serious threat
Q32: Which is the least-effective means of controlling
Q34: Instrument decay refers to the possibility that:<br>A)
Q35: Loss of subjects in a study can
Q36: Data collector characteristics may be a threat