Gridlock (Doctor Who)

"Gridlock" is the third episode of the third series of the British science fiction television series Doctor Who, first broadcast on BBC One on 14 April 2007. It was written by Russell T Davies and directed by Richard Clark.

In the episode, alien time traveller the Doctor (David Tennant) takes his new companion Martha Jones (Freema Agyeman) to New New York in the far future, where they discover the remainder of humanity on the planet live in perpetual gridlock within the Motorway, an underground highway system. When Martha is kidnapped, the Doctor races to find her before she enters the dangerous "fast lane".

"Gridlock" completes a loose trilogy that began with "The End of the World" (2005) and "New Earth" (2006), and contains hints at the series' story arc. The story is designed to show how the Doctor can bring hope into a world. Production of "Gridlock" took place in September and October 2006. Much of the episode was filmed in-studio and used a large amount of computer-generated imagery, so it appeared to be set in a "CGI world". Some location filming was done in Cardiff, most notably at the Temple of Peace. "Gridlock" was viewed by 8.41 million viewers in the UK and received generally positive reviews from critics.

Psychopathy

Psychopathy (/saɪˈkɒpəθi/, differentiated from—sociopathy (/soʊsiˈɒpəθi/) is traditionally defined as a personality disorder characterized by enduring antisocial behavior, diminished empathy and remorse, and disinhibited or bold behavior. It may also be defined as a continuous aspect of personality, representing scores on different personality dimensions found throughout the population in varying combinations. The definition of psychopathy has varied significantly throughout the history of the concept; different definitions continue to be used that are only partly overlapping and sometimes appear contradictory.

Hervey M. Cleckley, an American psychiatrist, probably influenced the initial diagnostic criteria for antisocial personality reaction/disturbance in the Diagnostic and Statistical Manual of Mental Disorders (DSM), as did American psychologist George E. Partridge. The DSM and International Classification of Diseases (ICD) subsequently introduced the diagnoses of antisocial personality disorder (ASPD) and dissocial personality disorder, stating that these have been referred to (or include what is referred to) as psychopathy or sociopathy. Canadian psychologist Robert D. Hare later repopularised the construct of psychopathy in criminology with his Psychopathy Checklist.