Part of Yale's Overcoming Dyslexia course, this lesson focuses on how clinicians and educators identify dyslexia in students. The instructor walks through the diagnostic criteria and early signs that distinguish dyslexia from other reading difficulties, framing diagnosis as the necessary first step before intervention. The lesson is compact, covering the core markers used in assessment rather than a full case study, and sets up the next part in the sequence for a deeper look at testing methods. It suits viewers who want a concise, academically grounded introduction to how reading disorders are recognized in practice, drawn from Yale's ongoing work on dyslexia research and education.