Top Posters
Since Sunday
r
5
m
5
h
5
r
5
t
5
B
5
P
5
s
5
m
5
c
5
c
4
4
Home Q & A Board Laboratory Help Referencing Help
New Topic  
Cremeux Cremeux
wrote...
Go to Answer
Posts: 4510
Rep: 2 0
9 years ago
The two control groups in the California study on the effect of a new child passenger restraint law were added to control for
A) instrumentation.
B) history.
C) maturation.
D) Both A and B
Textbook 
Research Methods: A Process of Inquiry

Research Methods: A Process of Inquiry


Edition: 8th
Authors:
Read 171 times
3 Replies
Replies
Answer verified by a subject expert
stylezstylez
wrote...
#1
Top Poster
Posts: 4397
Rep: 88 0
9 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

Cremeux Author
wrote...
#2
9 years ago
Excellent, what I needed. Respect
wrote...
#3
9 years ago
A thumbs up would be nice Wink Face
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  801 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 415
  
 352
  
 501
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 820
Previous poll results: Where do you get your textbooks?