A checklist cannot tell you if someone is dyslexic. It is a tool used to help understand whether there is a likelihood of dyslexia, and whether further investigation should take place. Dyslexia can only be diagnosed through a formal Diagnostic Assessment.
The Adult Dyslexia Checklist contains questions that help predict dyslexia. The scores for each answer show the relative importance of that question.
Alongside each line you can keep a tally of your score and at the end find your total.