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absolute error

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

In psychophysics, the difference between the judged value of a stimulus and its true value, ignoring the direction of the difference. Compare relative error. [Alluding to the mathematical...

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absolute refractory period

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A refractory period (2), lasting up to 2 milliseconds after the onset of an action potential, during which no stimulus (5) can initiate another nerve impulse in the neuron. Compare relative...

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abstinence syndrome

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A pattern of signs and symptoms associated with withdrawal in a drug-dependent person who is suddenly deprived of a regular supply of the drug and is forced to practise abstinence (1).

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achievement test

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

Any test of acquired ability or skill, a typical example being a test of scholastic attainment. See also competency test. Compare ability test, aptitude test.

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adrenalin rush

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A sudden increase in competitive drive displayed by an athlete or sports competitor, supposedly associated with the release of adrenalin into the bloodstream. This expression is based on a...

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alpha motor neuron

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

The largest type of spinal motor neuron, supplying skeletal muscles and forming alpha fibres. Also called an alpha motoneuron. Compare gamma motor neuron, Renshaw cell.

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anticholinergic

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

Of or relating to any drug such as atropine or scopolamine that blocks nerve impulses in the parasympathetic nervous system or counteracts the effects of acetylcholine, such blocking also...

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attention span

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

1 The length of time for which a person can attend to something.

2 Another name for the span of apprehension. See also chunking, magical number seven.

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attribution theory

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A theory designed to explain how people perceive, infer, or ascribe causes to their own and other people's behaviour. Basic research in this area has established that we tend to attribute...

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autogenic training

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

A form of psychotherapy in which the client is taught self-hypnosis and biofeedback as techniques of managing stress. It involves a sequence of graded mental exercises (concentrating in...

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