A longitudinal design is essentially a A) between-subjects ...

[rosent76]

A longitudinal design is essentially a
 
  A) between-subjects design.
  B) within-subjects design.
  C) between-groups design.
  D) within-groups design.

Question 2

What is a common problem with longitudinal designs?
 
  A) Attrition (participants dropping out)
  B) Participants may be unwilling to complete the survey several times.
  C) Long-term studies are often expensive.
  D) All of the above

[Sassygurl126]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: D

[rosent76]

TYSM

[jordangronback]

Thanks for the timely response, appreciate it