Order Effects
Order effects occur when a participant in an experiment is able to perform a task and then perform it again at some later time. Generally, they either have a positive (subjects become better at performing the task) or negative (subjects become worse at performing the task) effect. Repeated measures designs are almost always affected by order effects; the primary exception to this rule is in the case of a longitudinal study. How well these are measured is controlled by the exact type of repeated measure design that is used. To counteract order effects there is a method which you can use called counter balancing.
Examples of order effects are as follows: practice, boredom and fatigue which can compromise the reliability (consistency) of the results.
Read more about this topic: Repeated Measures Design
Famous quotes containing the words order and/or effects:
“Being a Georgia author is a rather specious dignity, on the same order as, for the pig, being a Talmadge ham.”
—Flannery O’Connor (1925–1964)
“Some of the greatest and most lasting effects of genuine oratory have gone forth from secluded lecture desks into the hearts of quiet groups of students.”
—Woodrow Wilson (1856–1924)