One of the problems with retrospective designs is that they a. ...

[jenna1]

One of the problems with retrospective designs is that they
 
  a. are only useful in identifying cohort effects.
  b. rely on people's memories, which can be faulty.
  c. require longer than other studies as participants are observed over time.
  d. combine the weaknesses of longitudinal and cross-sectional studies.

Question 2

If you want to study people over time but don't want to rely on people's memories for past behaviors, you should use a
 
  a. prospective study.
  b. cohort study.
  c. withdrawal study.
  d. cross-sectional study.

[EAN94]

Answer to Question 1

b

Answer to Question 2

a

[jenna1]

TYSM

[upturnedfurball]

Gracias!