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

Author Question: Ex post facto research is less convincing than experimental research because a. there is no ... (Read 76 times)

fahad

  • Hero Member
  • *****
  • Posts: 570
on: Jun 20, 2018
Ex post facto research is less convincing than experimental research because
 
  a. there is no control over the dependent variables.
  b. differences in the independent variable were present before the start of the study.
  c. differences in the dependent variable were present before the start of the study.
  d. the independent variable preceded the dependent variable in time.
  e. b and c

Question 2

The internal validity threat that randomization eliminates in an experimental study is
 
  a. selection bias. c. instrumentation.
  b. subject effects. d. history.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

A


fahad

  • Member
  • Posts: 570
Reply 2 on: Jun 20, 2018
Excellent

debra928

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Research Methods Research Methods
Research Methods Research Methods
Popular Methods of Conducting Social Science Research Popular Methods of Conducting Social Science Research
Controlled Scientific Experiments Scientists use experimental research to test hypotheses Controlled Scientific Experiments Scientists use experimental research to test hypotheses
Post-term birth rates, by province/territory, Canada Post-term birth rates, by province/territory, Canada
Research Research
Video: Bone processes - resorption and deposition, remodeling and response to stress in adult bones

For a complete list of videos, visit our video library