What is an Assessment Centre?
More commonly used for recruitment, assessment centres are a combination of various tasks and exercises (e.g. roleplays, group discussions, presentations, interviews, etc.) which are designed to examine the extent to which your skills, personality and interests match with a particular role and organisation.
What is a Development Centre?
A development centre is similar to an assessment centre in content, but is instead a method to provide an insight into strengths and development areas with the help of trained 'assessors'. Any development areas identified are then usually targeted with suggestions for development activities. The approach can vary, but generally the focus is on development and growth of skills.