Vin Diesel (born Mark Sinclair or Mark Sinclair Vincent; July 18, 1967) is an American actor, producer, director, and screenwriter. He came to prominence in the late 1990s, and became best known for appearing in several successful Hollywood films such as Saving Private Ryan (1998), Pitch Black (2000), The Fast and the Furious (2001), xXx (2002), The Chronicles of Riddick (2004), Fast & Furious (2009), Fast Five (2011), and Fast & Furious 6 (2013). He is also the founder of the production companies One Race Films, Racetrack Records, and Tigon Studios.
A psychologist evaluates, diagnoses, treats, and studies behavior and mental processes. Some psychologists, such as clinical and counseling psychologists, provide mental health care, and some psychologists, such as social or organizational psychologists conduct research and provide consultation services.