Articles on attention, memory and the mind
Plain-language guides to the tasks on this site, the research behind them, and realistic ways to use them.
Psychology Principles
Stroop Test Guide: How the Color-Word Task Works
A plain-language guide to the Stroop test: what you see, what is measured, how the interference effect is calculated, and how to read your own results.
Psychology Principles
What Your Reaction Time Says and What It Does Not
Reaction time tests are quick and fun, but what do the numbers mean? Learn what is measured, why devices add delay, and how to compare results fairly.
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