Reliability Flashcards
What is internal reliability?
Extent to which a test/measure is consistent within itself
What is external reliability?
Extent to which a test produces consistent results over several occasions
What are reliability issues?
Lack of operationalised variables - makes replication impossible and makes inter-rater reliability issues more likely
Order effect - can occur in a repeated measures design
Lack of standardised procedure - jeopardise reliability
Inconsistent measuring tools - jeopardise reliability
Uncontrolled environment - jeopardise reliability
How can reliability issues be dealt with?
Increasing levels of control - use standardised procedures, instructions and scientific measuring equipment, reducing the effect of extraneous variables
Counterbalancing - Involves splitting sample into two halves where they complete conditions in opposit order, negating impact of order/practice effects
How can reliability be assessed?
What is split-half reliability?
What is test-retest reliability?
What is inter-rater reliability?
