Author Question: The effects of repeated testing represent a threat to internal validity primarily because A) ... (Read 115 times)

jake · **on:** Aug 4, 2018

The effects of repeated testing represent a threat to internal validity primarily because

A) participants get bored.
B) the researcher gets tired of giving the same test over and over.
C) of regression to the mean.
D) participants may gain proficiency through repeated practice.

Question 2

A confounding factor that can occur when observation procedures change during the study is called

A) regression.
B) maturation.
C) selection.
D) instrumentation.