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Author Question: Threats to external validity a) Include testing and instrumentation b) Are of concern after the ... (Read 56 times)

abc

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Threats to external validity
 
  a) Include testing and instrumentation
  b) Are of concern after the research is conducted
  c) Are related to the artificiality of the experimental condition
  d) None of the above is true regarding external validity

Question 2

A threat to internal validity that occurs when a pretest effects future performance on a posttest is known as
 
  a) Maturation
  b) Instrumentation
  c) History
  d) Testing



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ong527

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Answer to Question 1

c

Answer to Question 2

d




abc

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Reply 2 on: Jul 31, 2018
Thanks for the timely response, appreciate it


lkanara2

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Reply 3 on: Yesterday
Excellent

 

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