A consumer's income increases. Following this change, they are observed to increase their weekly purchases of fresh salmon but decrease their weekly purchases of canned tuna. According to the standard economic assumption that, for most goods, a person will choose to consume more (or at least not less) as their purchasing power grows, which statement provides the best analysis of this consumer's choices?

Analyzing Consumer Spending Changes

According to the standard economic assumption regarding how consumption changes with purchasing power, a model that shows a consumer buying less of a specific good after a significant salary increase is inherently flawed because it violates a fundamental principle of consumer choice.

Evaluating a Core Assumption in Consumer Choice

Interpreting Consumer Behavior

Rationale for a Core Economic Assumption

An economist is studying how consumer spending on four different items changes in response to a significant, across-the-board increase in household income in a city. Match each observed outcome to the economic principle it illustrates regarding the relationship between income and demand.

In consumer theory, it is generally assumed that an increase in a person's purchasing power will not lead them to buy less of a valued good. When, contrary to this standard assumption, an individual's consumption of a specific item decreases as their income grows, the income effect for that item is described as being ____.

A recent college graduate gets a high-paying job and immediately stops buying generic-brand instant noodles, which they had consumed frequently as a student. Despite common examples like this, why is it a standard and useful assumption in many economic models that a person will choose to consume more, or at least not less, of a good as their income increases?

Evaluating a Public Policy Model