A participant in an experiment is told that a particular pill ...

[tth]

A participant in an experiment is told that a particular pill should improve her performance on a cognitive task. The participant is then given the pill, and she performs better than usual on the task. In actuality, the pill did not contain any ingredients that would affect her performance on the task. The participant's improved performance is most likely due to ____.
 
  a. the double-blind design
  b. random variables
  c. the placebo effect
  d. confirmation bias

Question 2

In Dr. Turgrove's experiment, he includes a control group that receives a placebo. This type of research design is meant to control which confound?
 
  a. participants' expectations
  b. experimenter bias
  c. sampling bias
  d. independent variable

[Joy Chen]

Answer to Question 1

ANSWER:
c

Answer to Question 2

ANSWER:
a

[tth]

Thank you

[Joy Chen]

No problem