This topic contains a solution. Click here to go to the answer

Author Question: Dr. Smith was interested in whether there would be a reduction in the number of crimes in the ... (Read 61 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
Dr. Smith was interested in whether there would be a reduction in the number of crimes in the central city once closed-circuit cameras went up and were monitored by police. To accomplish this study, Dr. Smith looked at the police records for the four-square-block area where the cameras were installed each week for six months. Dr. Smith was using what method?
 
  a. cohort design
  b. time-series design
  c. classical experiment
  d. quasi-experimental design

Question 2

External validity in an experimental design refers to:
 
  a. the researcher's ability to be sure that they are measuring what they think they are measuring
  b. the lack of concern with issues internal to the study
  c. the ability to apply findings to other populations
  d. the ability to know your measures are consistent



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mceravolo

  • Sr. Member
  • ****
  • Posts: 349
Answer to Question 1

b

Answer to Question 2

c





 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

For a complete list of videos, visit our video library