With reference to a practical investigation you conducted into cognitive processing (e.g. memory, perception, or attention):
Identify a suitable inferential statistical test that was, or could have been, used to analyse the raw data collected.
Justify the choice of this test, making direct reference to the design, purpose, and data type of your specific investigation.
62 exam-style questions on OCR A Level Psychology Practical activities. Each one has a worked solution and a mark scheme showing where the marks go.