While professional-grade software often requires a subscription, you can effectively train yourself using these and resources. Most free options provide introductory testing or foundational video tutorials to help you recognize the seven universal emotions: happiness, sadness, fear, disgust, anger, contempt, and surprise. 1. Free Online Diagnostic & Demo Tools
Beginners who want to test their baseline accuracy.
Micro expression training tools are designed to sharpen the ability to detect fleeting facial muscle movements that last half a second or less. These involuntary "emotional leakages" are considered highly reliable indicators of genuine feelings. Primary Free Training Resources