In this situation, even if the parents and children have comparable levels of intelligence, the children may do far better because of their familiarity with the english language. Since the test is in english, the parent may have done more poorly simply as a result of being less fluent in english. Another potential reason could be education differences, students may have had more class time on questions similar to the questions on the stanford binet test than their parents who were schooled in perhaps more traditional education systems. This would be an important result in the context of the nature-nurture debate because it would highlight the influence of nurture in relation to intelligence. Somebody who believes firmly that nature is the determinant of intelligence might take note of the fact that a child could do far better than a parent on an intelligence test, despite comparable levels of ability, due to differences in nurture rather than nature, as in more schooling in english.