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Author Question: In a within-subjects research study, factors that change over time, such as history and maturation, ... (Read 104 times)

natalie2426

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on: Jun 19, 2018
In a within-subjects research study, factors that change over time, such as history and maturation, can be threats to ____.
 
  a. internal validity only
 b. external validity only
 c. both internal and external validity
 d. neither internal nor external validity

Question 2

A(n) ____ is usually developed to measure an abstract concept like an attitude.
 
  a. index
 b. instrument
  c. test
 d. scale


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vish98

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Reply #1 on: Jun 19, 2018
Answer to Question 1

a

Answer to Question 2

d


natalie2426

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Reply 2 on: Jun 19, 2018
Gracias!

FergA

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Reply 3 on: Yesterday
Wow, this really help

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