Repeated Measures Design Flashcards
What are the two types of a repeated measures design?
Counterbalancing and randomisation
What does a repeated measures design involve?
Every participant experiencing each of the experimental conditions
What does counterbalancing involve?
Equal numbers of participants undertaking the required tasks in different orders
When is counterbalancing not appropriate?
When one condition helps the performance of the other condition more than the other way round
What does randomisation involve?
A random strategy determining the order of the experimental conditions
What random strategy can be used in randomisation?
Tossing a coin
When does randomisation work best? Give an example
When there is a large number of items within each condition. E.g. An investigation that involves showing twenty photos to the participants and randomisation would order these
Why is randomisation important?
Because it avoids bias which might occur if the order is always the same
