Which of the following is listed in the text as a factor affecting internal validity?
A) Participants growing older or becoming fatigued
B) Changes in the calibration of instruments or observers used
C) Biased selection of subjects
D) All of the answers are correct.
Correct Answer:
Verified
Q46: If an extraneous variable provides an alternative
Q47: Variables are said to be _ if
Q48: A confounding variable poses little threat to
Q49: According to the text, _.
A) confounding variables
Q50: According to the text, confounding variables:
A) are
Q52: Unobserved changes in criteria used by observers
Q53: Using participants who have been selected on
Q54: Experimental mortality refers to a source of
Q55: Performance changes observed over time due to
Q56: When specific events occur between multiple observations
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents