Consider a study to evaluate the effect on college student grades of dormroom Internet connections. In a large dorm, half the rooms are randomlywired for high-speed Internet connections (the treatment group), and finalcourse grades are collected for all residents. Which of the following posethreats to internal validity, and why?a. Midway through the year, all the male athletes move into a fraternityand drop out of the study. (Their final grades are not observed.)b. Engineering students assigned to the control group put together alocal area network so that they can share a private wireless Internetconnection that they pay for jointly.c. The art majors in the treatment group never learn how to access theirInternet accounts.d. The economics majors in the treatment group provide access to theirInternet connection to those in the control group, for a fee.
Consider a study to evaluate the effect on college student grades of dorm
room Internet connections. In a large dorm, half the rooms are randomly
wired for high-speed Internet connections (the treatment group), and final
course grades are collected for all residents. Which of the following pose
threats to internal validity, and why?
a. Midway through the year, all the male athletes move into a fraternity
and drop out of the study. (Their final grades are not observed.)
b. Engineering students assigned to the control group put together a
local area network so that they can share a private wireless Internet
connection that they pay for jointly.
c. The art majors in the treatment group never learn how to access their
Internet accounts.
d. The economics majors in the treatment group provide access to their
Internet connection to those in the control group, for a fee.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
