Rational Investors, an Internet-based 401(k) software developer, is...

Rational Investors, an Internet-based 401(k) software developer, is being acquired by The McGraw-Hill Cos. to provide participant investment advice through its Standard & Poor’s division. At the same time, Standard & Poor’s is launching an interactive, Web-based service — called 401(k) Advisor — providing investment advice for 401(k) plan participants, plan sponsors and service providers. The investment advice service uses asset allocation methodology developed by Standard & Poor’s and Rational Investors’ software. All investment recommendations are delivered by Standard & Poor’s Investment Advisory Services, which is an SEC-registered investment adviser.