« previous next »

Author Question: The use of a placebo is typically used to a) Rule out threats to internal validity b) Test for ... (Read 55 times)

cartlidgeashley

  • Hero Member
  • *****
  • Posts: 572
on: Jun 22, 2018
The use of a placebo is typically used to
 
  a) Rule out threats to internal validity
  b) Test for ethical issues
  c) Check for the impact of contact
  d) Enable everyone to eventually receive the treatment

Question 2

No-treatment and waiting-list control groups are primarily used to
 
  a) Reduce bias in participants' responses
  b) Reduce threats to external validity
  c) Increase construct validity
  d) Increase internal validity


durant1234

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jun 22, 2018
Answer to Question 1

Correct Answer: a

Answer to Question 2

Correct Answer: d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

This internal bypass passage in the thermostat housing directs cold coolant to the water pump. This internal bypass passage in the thermostat housing directs cold coolant to the water pump.
(a) The connection required to test a Halleffect sensor. (b) A typical waveform from a Hall-effect ... (a) The connection required to test a Halleffect sensor. (b) A typical waveform from a Hall-effect ...
A Scatterplot of the Test Scores and Average Grades of 10 Students A Scatterplot of the Test Scores and Average Grades of 10 Students
a) Radioimmunosorbent test (RIST); (b) radioallergosorbent test (RAST). a) Radioimmunosorbent test (RIST); (b) radioallergosorbent test (RAST).
Controlled Scientific Experiments Scientists use experimental research to test hypotheses Controlled Scientific Experiments Scientists use experimental research to test hypotheses
Test-cross analysis of F1 plants Test-cross analysis of F1 plants
Video: Gastrin (gastric emptying) & Secretin (buffering gastric acid)

For a complete list of videos, visit our video library