What are order effects
These are the consequences of participating in a study more than once , they cause changes in performance between conditions
What are the two types of order effects
practice and fatigue effect
What is practice effect
This is when the participants performance improves because they experience the experimental task more than once
Fatigue effect
a situation where participants performance declines because they experience the experimental task more than once e.g due to physical tiredness or boredom
How can order effects be reduced
Researchers can use counterbalancing to reduce order effects