Guides
In-depth guides to each test: what it measures, what the research says, and how to read your score.
- CRT · 9 min read
The Cognitive Reflection Test: why smart people fall for simple traps
What the Cognitive Reflection Test and the bat-and-ball problem really measure, what scores predict, and the debates about numeracy and familiarity.
- DT · 8 min read
The Dark Triad, explained without the hype
What Machiavellianism, narcissism and psychopathy really mean in personality research, how Dark Triad tests work, and what a score can and cannot tell you.
- EQ · 9 min read
Emotional intelligence: what the science actually says
Where EQ comes from, what it does and does not predict, whether it can be trained, and how our free emotional intelligence test works.
- FQ · 9 min read
Your financial mind: literacy, patience and loss aversion
What a financial literacy quiz and a loss aversion test really measure: the Big Three questions, discounting, prospect theory and the debates around them.
- 16T · 8 min read
16 personality types vs the Big Five: what your type really tells you
Where the 16 personality types come from, why researchers prefer the Big Five, and how to read a free type test's letters and percentiles.
- IQ-Q · 9 min read
What is fluid intelligence, and how is IQ measured?
What fluid intelligence is, how matrix puzzles measure it, what IQ scores like 100 or 130 mean, and what a free online IQ test can and cannot tell you.