Which of the following is a recognized type of validity in psychological research, rather than a measure of reliability?
Inter-observer\text{Inter-observer}Inter-observer
Concurrent\text{Concurrent}Concurrent
Test-retest\text{Test-retest}Test-retest
Split-half\text{Split-half}Split-half
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.