Measure Your Mind: The Mentimeter and How to Use It

This is a fascinating artifact from the dawn of psychological testing. Published in the early 1920s, Measure Your Mind captures the optimism of an era that believed intelligence could be precisely quantified, measured, and put to work. The Mentimeter itself was a mechanical device designed to administer standardized intelligence tests, and this manual serves as both instruction guide and evangelism for the new science of mental measurement. Stockbridge and Trabue walk readers through the theory and practice of assessing human cognition before computers, before modern statistics, before the ethical debates that would later consume the field. They show how these tests could identify individual strengths and guide people toward educational and career paths. The methods were applied in schools, businesses, and military settings. Reading it now feels like glimpsing psychology's adolescent phase: earnest, pioneering, occasionally naive, but undeniably foundational to everything that followed. For anyone curious about where modern standardized testing came from, this is a front-row seat to its origins.