Psychologist is a professional or academic title used by individuals who are either:

There are many different types of psychologists, as is reflected by the 56 different divisions of the American Psychological Association (APA). Psychologists are generally described as being either "applied" or "research-oriented". The common terms used to describe this central division in psychology are "scientists" or "scholars" (those who conduct research) and "practitioners" or "professionals" (those who apply psychological knowledge). The training models endorsed by the APA require that applied psychologists be trained as both researchers and practitioners, and that they possess advanced degrees.

Most typically, people encounter psychologists and think of the discipline as involving the work of clinical psychologists or counseling psychologists. While counseling and psychotherapy are common activities for psychologists, these applied fields are just one branch in the larger domain of psychology. Research and teaching comprise a major role among psychologists. Technological advances in the future may increase the usage of computerized testing and assessment services in order to do some of the jobs of psychologists, including recognizing mental disorders.

Richard Ellef Ayoade ( /aɪ.oʊˈɑːdeɪ/, eye-oh-WA-dee, born 12 June 1977) is a British comedian, actor, writer and director, best known for his role as Maurice Moss in The IT Crowd.

Ayoade was born in Whipps Cross, London, an only child to a Norwegian mother, Dagny (née Baassuik), and a Nigerian father, Layide Ade Laditi Ayoade. Ayoade studied at St. Joseph's College in Ipswich, Suffolk and later studied law at St Catharine's College, Cambridge (1995–1998) where he won the Martin Steele Prize for play production and was president of the Footlights from 1997 to 1998.

While in Footlights, Ayoade acted in and wrote many shows. He and Footlights vice-president John Oliver wrote two pantomimes together: Sleeping Beauty, and Grimm Fairy Tales. Ayoade acted in both Footlights' 1997 and 1998 touring shows: Emotional Baggage and Between a Rock and a Hard Place (directed by Cal McCrystal).

Ayoade co-wrote the stage show Garth Marenghi's Fright Knight with Matthew Holness, whom he also met at the Footlights, appearing in the show at the Edinburgh Fringe in 2000 where it was nominated for a Perrier Award. In 2001 he won the Perrier Comedy Award for co-writing and performing in the sequel to Fright Knight, Garth Marenghi's Netherhead.

James Kimberley Corden (born 22 August 1978) is an English actor, television writer, producer and presenter. He is co-creator and star of BBC comedy shows Gavin & Stacey and Horne & Corden, and acted in the 2009 film Lesbian Vampire Killers. He attracted attention for his performance in the lead role in the award-winning comedy play One Man, Two Guvnors, which transferred from the National Theater to the West End and then to Broadway.

Corden was born to Malcolm and Margaret Corden in Hillingdon, Greater London, and grew up in Hazlemere, Buckinghamshire. He has an older sister, Andrea Henry, and a younger sister, Ruth Corden.

Corden obtained his first part at eighteen years old in the musical Martin Guerre. He then starred in the British television series Fat Friends as Jamie Rymer, and played Gareth Jones in the series Boyz Unlimited. His television work includes a credited minor role as Razor #1 in Renford Rejects (Series 1 Episode 2, 1998), a role playing a bookish student in Teachers (Series 1, 2000) and he also made a guest appearance in Little Britain. Corden's film credits include Whatever Happened to Harold Smith? (1999) and Mike Leigh's All or Nothing (2002).

Jack Peter Benedict Whitehall (born 7 July 1988) is an English comedian, television presenter and actor, and a former host of the E4 show Big Brother's Big Mouth in 2008, Celebrity Big Brother's Big Mouth in January 2009, and the Channel 4 topical entertainment show the TNT Show.

Whitehall was born in Westminster, London, to actress Hilary Amanda Jane (née Isbister) and Michael John Whitehall. His father was an agent for Judi Dench, Colin Firth and Richard Griffiths, and wrote the memoir Shark-Infested Waters. Whitehall has a sister, Molly Louisa (born 1989), and a brother, Barnaby William (born 1992). His godfather is the actor Nigel Havers. He attended the Harrodian School in London, where he was a fellow pupil with Twilight Saga star Robert Pattinson. He has made jokes about this, often mentioning that he resented Pattinson for taking all the best acting roles in the school plays,. He went on to attend The Dragon School in Oxford and then Marlborough College, an independent school in Wiltshire. Whitehall took a gap year where he decided to pursue a career in stand-up comedy. He attended the University of Manchester to study History of Art, but did not graduate. While at the university he lived in the Owens Park Tower.

Kay Redfield Jamison (born October 14, 1946) is an American clinical psychologist and writer whose work has centered on bipolar disorder which she has suffered from since her early adulthood. She is Professor of Psychiatry at the Johns Hopkins University School of Medicine and is an Honorary Professor of English at the University of St Andrews.

Jamison began her study of clinical psychology at University of California, Los Angeles in the late 1960s, receiving both B.A. and M.A. degrees in 1971. She continued on at UCLA, receiving a Ph.D. in 1975, and became a faculty member at the university. She went on to found and direct the school's Affective Disorders Clinic, a large teaching and research facility for outpatient treatment. She also took sabbatical leave to study zoology and neurophysiology at the University of St. Andrews in Scotland.

After several years as a tenured professor at UCLA, Jamison was offered a tenured post as Professor of Psychiatry at the Johns Hopkins University School of Medicine, perhaps the first time such a post had been offered to a psychologist. Jamison has given visiting lectures at a number of different institutions while maintaining her professorship at Hopkins. She was distinguished lecturer at Harvard University in 2002 and the Litchfield lecturer at the University of Oxford in 2003. She was Honorary President and Board Member of the Canadian Psychological Association from 2009–2010.