Isaac is an American middle-schooler in the present day. Ade is a Nigerian 10-year-old. Thirty years ago, Isaac's father's IQ was 100 when he was in school. Ade's father's IQ was also 100 three decades ago. Today, Isaac's IQ is probably around __________; that of Ade is likely to be approximately __________.
A) 109; 109
B) 109; 100
C) 100; 100
D) 100; 109

Question

Quizplus · Accepted Answer

Due to the Flynn effect, which suggests that IQ scores tend to increase over time due to various factors such as improved education and nutrition, it is likely that both Isaac and Ade have higher IQs than their fathers did 30 years ago.

Isaac Is an American Middle-Schooler in the Present Day