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The Matched Pairs Design. By Christian Ing, Brittany Omotosho, and Aaron Faulkner . WHAT IS THE MATCHED- PAIRS DESGIN???. The matched-pairs design is an experimental design in which the experimental units are paired up. The pairs are matched up so that they are somehow related.
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The Matched Pairs Design By Christian Ing, Brittany Omotosho, and Aaron Faulkner
WHAT IS THE MATCHED- PAIRS DESGIN??? • The matched-pairs design is an experimental design in which the experimental units are paired up. • The pairs are matched up so that they are somehow related. • There are only two levels of treatment in a matched-pairs design. • In a matched-pairs design, one matched individual will receive one treatment while the other matched individual receives a different treatment.
Continuation of explanation • The assigning of the matched pair to the treatment is done randomly by either flipping a coin or using a random number generator. • After assigning the treatment to the pair, we look at the difference between the results of the matched pair. • The matched-pairs design was to measure a response variable on the subject of experimentation before and after receiving treatment. • The individual is matched against itself. These experiments are known as pretest-protest experiments.
Examples of Matched-pairs design • Aaron Faulkner and his sibling being set in a room with music and a room without music to see if music has an effect on homework completion. • Brittany’s mother and Brittany being put in separate rooms. One room with yellow walls and another room with red walls to determine if color has an effect on emotions. • Christian and his brother being put into separate rooms. Both subjects are blindfolded. One room has an air freshener and one room has dirty laundry to check if smell has an effect on the perception of blind individuals.
Example problem • An educational psychologist wanted to determine whether listening to music has an effect on a student’s ability to learn. Design an experiment to help the psychologist answer the question.
Solution • Match the students based on gender and IQ level. • Randomly select a student from each pair for treatment. • Administer treatment and exam to each matched pair. • For each matched pair, compute the difference in scores on the exam.
