Though it's best diagnosed by a professional, doing so is often costly. That said, there are a few easy indicators for identifying a dyslexia in you or your child.
You can also use this Free Online Dyslexia Test.
Know The Signs
First, look for the usual signs -- the most dominant is reversing letters and words like "saw" and "was." For children, new guidelines say that after a year of reading/writing instruction, if a student is still reversing letters and words, that may be indicative of dyslexia. Temperament is also important; often, dyslexics are in a "dyslexic fog," a step behind everyone else as they take longer to process information. On the flipside, dyslexics can and usually are still sociable, perceptive, and witty.