This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Dr. Smith was interested in whether there would be a reduction in the number of crimes in the ... (Read 17 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
on: Aug 13, 2018
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
Reply #1 on: Aug 13, 2018
Answer to Question 1

b

Answer to Question 2

c


jc611

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Aug 13, 2018
TY


mceravolo

  • Sr. Member
  • ****
  • Posts: 349
Reply #3 on: Aug 13, 2018
You're welcome


« previous next »
 

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

(a) Zombies are a common theme in movies. However, (b) the number of zombie movies released each yea (a) Zombies are a common theme in movies. However, (b) the number of zombie movies released each yea
From left to right: Size development, biometrical changes in the cranium, reduction of toes ... From left to right: Size development, biometrical changes in the cranium, reduction of toes ...
Smith and Snell’s Five Religious Categories Smith and Snell’s Five Religious Categories
Kiki Smith, Bird Skeleton. Kiki Smith, Bird Skeleton.
Plot showing the number of genes on each human chromosome Plot showing the number of genes on each human chromosome
Locate the following places by reference number on the map:Key Locales of Political, Economic, ... Locate the following places by reference number on the map:Key Locales of Political, Economic, ...
Video: Apicomplexan life cycle Animation

For a complete list of videos, visit our video library