Ronald Is in the First Grade and Is Given an Addition

question 499

Multiple Choice

Ronald is in the first grade and is given an addition worksheet to complete. At one point on the worksheet, the problems 2 + 5 = and 5 + 2 = are side-by-side. Ronald uses his fingers to count out each problem, although the same numbers are used but in a different order. Ronald is illustrating his lack of

• A)reversibility.
• B)object permanence.
• C)animism.
• D)egocentric thought.

---

Definitions:

Utility Function

A mathematical representation that ranks preferences or satisfaction levels consumers derive from different bundles of goods.

Perfect Substitutes

Products or goods that can replace each other perfectly with no loss of utility to the consumer.

Utility Function

A mathematical representation of a consumer's preference ranking over a set of goods or services, indicating satisfaction levels.

Units Of X

A generic term for measuring quantities of a variable or unspecified item, labeled as 'X'.