What is the term for the variation in consumption caused by a price change that shifts the consumer's position along the same indifference curve?

Explanation

The substitution effect describes how a consumer adjusts their consumption when a price change causes them to move along a fixed indifference curve, substituting one good for another while maintaining the same level of utility. Other effects like the income effect involve changes in real purchasing power, and inferior or normal effects refer to types of goods, not the movement along the curve.