What incidence measures
What incidence measures
An incidence count is the number of new cases of a condition that begin in a population during a set period, such as one year. It does not include people who already had the condition at the start of the period.
Step-by-step lessons on Edexcel GCSE Psychology 3.1.2 Incidence over time. Each one builds up to exam-style questions. Start with the more concrete compulsory topics like memory and development before tackling evaluation-heavy optional topics and research methods.