Scientific Learning Corporation announced that Jeffrey D. Thomas has assumed the role of CEO replacing Robert Bowen, who will continue to serve as Chairman of the Board of Directors. Thomas was named co-CEO in February after serving as the board’s Lead Independent Director. Before joining Scientific Learning, Thomas was involved with several private-equity backed education companies in CEO and executive chairman positions. He served for over 11 years as CEO of the Ambassadors Group Inc. and six years as president and CFO of Ambassador International.