The Index of Consumer Expectations (ICE) measures household optimism about future finances and business conditions. It comes from the University of Michigan Surveys of Consumers, run by the Survey Research Center in the Institute for Social Research. The monthly series began in January 1978 within a programme founded in 1946, and each survey asks about 50 core questions. The sample represents adults 18 and older in the coterminous United States, the 48 states plus the District of Columbia, excluding Alaska and Hawaii.
It uses a rotating panel that mixes fresh interviews with re-interviews from about 6 and 12 months earlier. It tracks attitudes, not actual spending, retail sales or inflation. Here Michigan means the university, not a state-only sample, and the index feeds leading activity gauges.