Final answer:
The Stanford-Binet intelligence test, developed by Lewis Terman, standardized test content and scoring, unlike the Binet-Simon test. Terman gathered data from thousands of children to establish average scores for each age group, resulting in a normed and standardized test.
Step-by-step explanation:
The Stanford-Binet intelligence test, developed by Lewis Terman, differed from the Binet-Simon intelligence test in that it standardized test content and scoring, while the Binet-Simon test did not. Terman standardized the administration of the test and gathered data from thousands of different-aged children to establish average scores for each age group. This allowed the Stanford-Binet test to be normed and standardized, resulting in a bell curve distribution of scores.