At preschool, it is steph's fourth birthday. although henry is only 3 years old, he insists that he is older than steph because he is taller than she is. henry focusing on height as a measure of age is an example of:

Henry focusing on height as a measure of age is an example of centration.

Explanation:

Centration is a term used in psychology when someone focuses on one aspect of something rather than all other relevant information. Centration is common in the preoperational phase. The preoperational stage starts around age two and goes until about age seven. Henry is focusing only on height to determine age instead of when each of them were born. This is a perfect example of centration.

b. the american revolution