Rosenberg has written many articles in professional journals and political magazines. He also wrote, coauthored, or edited a number of books, including: Attitude Organization and Change; Theories of Cognitive Consistency; Domestic Sources of Foreign Policy; Beyond Conflict and Containment: Critical Studies of Military and Foreign Policy; and Vietnam and the Silent Majority. One of his areas of study was cognitive dissonanceand attitude change, on which he worked closely with Robert P. Abelson, among others.
Since 1973 until December 20, 2012, he hosted WGN Radio's "Extension 720," a two-hour discussion show with one hour reserved for call-ins. The program, which aired Sunday through Thursday (originally Monday through Friday) from 10 p.m. to midnight (an hour later than formerly), dealt with topics ranging from politics to financial investment to entertainment to religion to foreign policy to literature, and, as Milt says, "just about everything except pop psychology and poodle-trimming."