Intelligence Research & Cognitive Science Blog

A practical checklist of 12 red flags that expose junk IQ tests and 8 markers of legitimate assessments. Learn how to evaluate any online IQ test using psy...

Some online IQ tests are scientifically credible. Most aren't. Learn the psychometric red flags that reveal whether your IQ score actually means anything.

TalentSmart data shows EQ accounts for 58% of job performance across all roles. Explore the salary premiums, promotion rates, and leadership outcomes tied...

Research shows well-designed online IQ tests correlate r = 0.70-0.85 with clinical assessments. This data-driven analysis examines the validation evidence,...

Lumosity paid $2 million to settle false advertising claims about brain training. But does that mean all brain games are useless? Review the evidence on Du...

Your IQ score depends on when the test was normed. Learn how normative samples are built, why the WAIS and Stanford-Binet must be updated regularly, and ho...

IQ measures reasoning ability, but common sense drives everyday decisions. Explore Sternberg's triarchic theory, practical intelligence research, and real-...

How much of your IQ actually comes from your parents? Explore twin studies, heritability data, and the surprising ways genetics and environment shape intel...

Can brain scans predict IQ? This article covers what fMRI, MRI, and EEG studies reveal about the neural basis of intelligence - from brain size and cortic...

Your grandparents would score about 15-20 IQ points lower on today's tests - not because they were less capable, but because of the Flynn effect. Here is...

Not all online IQ tests are created equal. This guide covers what validation studies show about internet-based IQ tests, the specific red flags that signal...

Modern IQ tests use AI-powered scoring algorithms, adaptive item selection, and natural language processing to grade responses. Here is how the technology...