Why it matters
Became a widely used index of reliability in psychology and education.
Core term · Lee J. Cronbach
Cronbach's Alpha
A statistic estimating the internal consistency of a scale or test.
Areas of life
Researchsurveysproduct analyticsassessment
How to handle it
Check whether items measure a coherent construct before interpreting total scores.
Who shaped this idea
The thinker behind it
From concept to practice
Turn Cronbach's Alpha into a question you can answer.
Psipas asks you one small, honest question at a time — and builds the picture from your answers.