In developing an IQ test, one might influence the shape of the population distribution by:

Question

Quizplus · Accepted Answer

Adding questions to an IQ test can influence the shape of the population distribution. The more difficult the questions, the fewer people will get them right, resulting in a population distribution that is more negatively skewed. Conversely, the easier the questions, the more people will get them right, resulting in a population distribution that is more positively skewed. Testing only males or females would not change the shape of the distribution as there are no inherent differences in intelligence between genders. Creating a nonverbal or culture-fair test may affect individual scores, but would not necessarily affect the shape of the population distribution.

In Developing an IQ Test, One Might Influence the Shape