If X = experimental treatment and O = pretest or posttest observation, then "O X O X O X O" represents the _____ design.
A) repeated treatment
B) mixed factorial
C) regression discontinuity
D) interrupted time series

Question

Quizplus · Accepted Answer

The "O X O X O X O" design, where 'O' represents observations (pretests or posttests) and 'X' represents the experimental treatment applied multiple times, is indicative of a repeated treatment design. This pattern shows a series of observations and treatments applied in alternation, characteristic of repeated measures or treatments to assess the effects over time.

If X = Experimental Treatment and O = Pretest or Posttest