IQ Guides – Science-Based Insights to Understand Intelligence & Cognitive Ability

This page is curated and reviewed by , cognitive science researcher and founder of CheckIQFree.

IQ vs. Academic Achievement

IQ vs Academic Achievement: What Matters More?

Explore the real difference between IQ and academic achievement, how they relate to intelligence, learning potential, and what truly matters for long-term success.

IQ vs GPA

IQ vs GPA: Does Intelligence Predict Grades?

Explore how IQ and GPA are related, why intelligence doesn’t guarantee high grades, and what factors truly influence academic success over time.

IQ vs SAT Score

IQ vs SAT Score: Are They Related?

Explore the relationship between IQ and SAT scores, how they differ, how strongly they correlate and what each test really measures about intelligence.

Does a Low IQ Mean You Will Fail at School

Does a Low IQ Mean You Will Fail at School?

Does a low IQ mean a student will fail at school? Learn why IQ alone does not determine academic success and how learning strategies matter more.

can someone with a low iq be successful

Can a Low IQ Person Be Successful in Life?

Can someone with a low IQ still succeed in life? Learn why IQ does not determine success and how skills, habits, and mindset matter far more.

Should I Worry If My IQ

Should I Worry If My IQ Is Below Average?

Worried about having a below-average IQ? Learn what a lower IQ score really means, what it does not say about your abilities, and why it doesn’t limit success.

Average IQ by Age

Average IQ by Age: Are You Smarter Than Your Peers?

Average IQ varies by age as different cognitive skills peak over time. Discover how IQ changes with age and find out whether you are smarter than your peers.