Which of the following are a potential weakness or potential confound with using a longitudinal design?

Question

Quizplus · Accepted Answer

Potential subject attrition is a potential weakness or confound with using a longitudinal design as participants may drop out of the study and skew results. However, the other choices (A, B, and C) are not weaknesses or confounds but rather common considerations when using a longitudinal design. Trouble identifying underlying processes of change, detecting change over time in at least two time points, and underestimating variability within age groups are issues that researchers need to be aware of and address in their design and analysis, but they do not invalidate the use of a longitudinal design.

Which of the Following Are a Potential Weakness or Potential