Aphasia occurs when a brain disorder affects a person’s language abilities, such as speaking, reading, and writing. The type of aphasia a person has depends on where damage occurs in the brain.

Expressive aphasia makes it hard to speak clearly, even though people can understand speech. Speech therapy can help improve communication skills for those with expressive aphasia. Expressive aphasia ...

Example code for the book Fluent Python by Luciano Ramalho (O'Reilly, 2014). BEWARE: This is a work in progress, like the book itself. Code here may change and disappear without warning. If a piece of ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...