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absolute scale [2 records]

Record 1 2014-01-30

English

Subject field(s)
  • Psychometry and Psychotechnology
CONT

There is another development that has recently appeared in a few tests that is important for the future development of test batteries. This is the appearance of absolute scales. An absolute scale is one that covers the entire range of a function, from zero (theoretically) to the full adult range. Zero is often unattainable in psychological scores; so the bottom of a scale is the lowest score for which a reliable score can be obtained. In practice such tests have an extended range from a below-average IQ of a young child to a superior adult IQ. In many areas, such as memory or tapping speed, a zero is obtainable.

French

Domaine(s)
  • Psychométrie et psychotechnique
CONT

L’échelle de réponse proposée, comme nous l’avons vu, est au mieux ordinale. Pour la transformer en une échelle absolue, il faut déterminer les écarts entre les rangs et, pour au moins l’un d’entre eux, sa distance à un zéro absolu. En ce qui concerne ce «zéro absolu», notre postulat est que les échelles d’évaluation subjectives, qui sont par nature bipolaire, en comportent un, qui est très «naturel», à savoir, le point d’indifférence ou d’incertitude qui correspond à la catégorie centrale, si le nombre de catégories est impair, ou au milieu de l’espace entre les deux catégories centrales, si ce nombre est pair.

Spanish

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Record 2 2010-03-08

English

Subject field(s)
  • Metrology and Units of Measure
  • Thermodynamics
  • Atmospheric Physics
DEF

A measure of temperature in which zero degrees is absolute zero (the temperature at which a substance possesses no heat whatever).

CONT

A temperature scale can be defined theoretically for which zero degree corresponds to zero average kinetic energy ... Such a point is called absolute zero, and such a scale is known as an absolute temperature scale. The Kelvin temperature scale is an absolute scale having degrees the same size as those of the Celsius temperature scale; the Rankine temperature scale is an absolute scale having degrees the same size as those of the Fahrenheit temperature scale.

CONT

The Rankine absolute temperature scale corresponds to degrees Fahrenheit in which water freezes at 491.69° and boils at 671.69°. The Kelvin absolute temperature scale corresponds to degrees centigrade in which water freezes at 273° and boils at 373°.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Thermodynamique
  • Physique de l'atmosphère
CONT

L'échelle de température absolue est reliée en pratique à l'échelle de Celsius par la relation : T(K) = t(°C) + 273,15.

CONT

Une autre échelle très usitée, surtout dans le domaine scientifique, est l'échelle absolue, ou Kelvin, qui fixe la température de fusion et d'ébullition de l'eau respectivement à 273,15 K et 373,15 K. Le zéro de l'échelle Kelvin est le zéro absolu.

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Termodinámica
  • Física de la atmósfera
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