The primary problem with using a pretest in an experiment is ...

[storky111]

The primary problem with using a pretest in an experiment is
 
  a) The pretest may actually encourage participants to be dishonest during the experiment.
  b) The pretest may sensitize participants and encourage them to act in a specific manner.
  c) The pretest may bias the experimenter to expect a certain experimental outcome.
  d) The pretest may lessen the impact of the experimental manipulation and dilute the findings.

Question 2

Reactivity may pose a threat to the external validity of an experiment because
 
  a) Participants may act differently since they are aware they are being observed
  b) Participants may not want to complete the experimental protocol
  c) Participants may be responding to internal scripts that are dictating their behavior
  d) Participants may attempt to discover the purpose of the experiment and act accordingly

[ririgirl15]

Answer to Question 1

Correct Answer: b

Answer to Question 2

Correct Answer: a

[storky111]

Thanks for the timely response, appreciate it

[FergA]

Gracias!