Price elasticity of demand is to responsiveness of quantity demanded as consumer confidence is to what?

Price elasticity of demand is a measure of how much the amount people buy changes when the price changes. Consumer confidence is a measure of how optimistic people feel about the economy and their own financial situation. Just as elasticity tells us how responsive buying is to price, consumer confidence tells us how responsive spending is to feelings about the future. For example, when confidence is high, people are more likely to buy more and spend more, just as a high elasticity means people will buy more when prices drop. Thus, consumer confidence is to consumer spending what price elasticity of demand is to quantity demanded.