Dr.Barnes wants to prove that intelligence is stable by comparing the IQ scores of a group of individuals tested at two different ages.He is most likely to obtain the evidence he wants if he first tests individuals at age ________ and then again at age ________.

Question

Quizplus · Accepted Answer

Testing individuals at an early age such as 1 year or 3 years would not provide meaningful results as IQ scores can fluctuate greatly during childhood. Testing individuals at age 11 and then again at age 15 would provide a better indication of the stability of intelligence as the scores tend to stabilize during the teenage years. Testing individuals at age 1 and again at 17 is too wide of a timeframe and does not provide a consistent measure of intelligence.

DrBarnes Wants to Prove That Intelligence Is Stable by Comparing