Wutzke et al. (2000) studied ways to reduce attrition in ...

[lb_gilbert]

Wutzke et al. (2000) studied ways to reduce attrition in longitudinal research on heavy drinkers. They found that they could reduce attrition by
 
  a. promising the participants total confidentiality and anonymity in their participation.
  b. increasing internal motivation rather than relying on incentives to the participants.
  c. maintaining a strict policy of participation in order to establish routines for participation.
  d. maintaining contact throughout the project by sending birthday cards or regular newsletters.

Question 2

In Lewis Terman's 9-decade longitudinal study, there was a high level of attrition
 
  a. right after Terman died and the personal contact between him and participants was lost.
  b. when the female participants married and move away with their spouses.
  c. among male participants after their college years.
  d. as the participants became bored with repeated requests for information over the years.

[zoeyesther]

Answer to Question 1

d

Answer to Question 2

a

[lb_gilbert]

Excellent

[samiel-sayed]

Gracias!