Description: This 1978 teaching session provided a basic primer on the design of the OASDI benefit formula. Areas covered included: 1. The Decoupling issue 2. The Average Indexed Monthly Earnings 3. The Primary Insurance Amount formula 4. The Indexing procedure 5. Transition arrangements 6. The Short Service problem 7. Replacement Ratio considerations 8. Impact of Wage Base changes 9. The Retirement Age and Retirement Test.