Adverse selection occurs when one party in a transaction has more information than the other, especially in insurance and finance-related activities.
For other uses of Ada, see Ada (disambiguation). Ada is a city in and the county seat of Pontotoc County, Oklahoma, United States. The population was 16,810 at the 2010 census, an increase of 7.1 percent from 15,691 at the 2000 census. The city was named for Ada Reed, the daughter of an early settler, and was incorporated in 1901.
During the period of 1901-1907, Sayre was part of Roger Mills County in Oklahoma Territory. At the time Oklahoma became a state, Beckham County was created and Sayre, which was within the boundary of Beckham County, was named as the temporary county seat.