Transaction history and customer value: which products or services has the customer purchased from the organisation in the past? How may the customer’s payment behaviour be characterised? There are additional summarising criteria which may be used to describe the transaction history, examples include the Recency Frequency Monetary Value scores (see Chapter 11), lifetime values, share of wallets, and customer contribution margins (see Chapter 14). Direct marketing practice has taught us that historical buying behaviour is one of the best predictors of future purchase behaviour.