Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
New Topic  
Fineal Fineal
wrote...
Posts: 1063
Rep: 0 0
6 years ago
Latona did an experiment at a military barracks over the space of a few months to examine the effect of group size on group morale. He randomly assigned soldiers to the experimental and control groups and did a pretest and posttest. Midway through the experiment, some of the soldiers were re-assigned to different stations across the U.S. causing the sample size to drop. Which source of internal invalidity does this example reflect?
a.   history
b.   maturation
c.   instrumentation
d.   selection biases
e.   mortality
Textbook 
The Practice of Social Research

The Practice of Social Research


Edition: 13th
Author:
Read 128 times
3 Replies
Replies
Answer verified by a subject expert
humano123humano123
wrote...
Posts: 493
6 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Fineal Author
wrote...
6 years ago
wrote...
4 years ago
Thank you
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1291 People Browsing
Related Images
  
 1836
  
 1362
  
 301
Your Opinion
Who's your favorite biologist?
Votes: 586

Previous poll results: Where do you get your textbooks?