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DASS, the Depression Anxiety Stress Scales, [1] is made up of 42 self-report items to be completed over five to ten minutes, each reflecting a negative emotional symptom. [2] Each of these is rated on a four-point Likert scale of frequency or severity of the participants' experiences over the last week to emphasize states over traits.
"Degrees Lovibond" or "°L" scale is a measure of the colour of a substance, usually beer, whiskey, or sugar solutions. The determination of the degrees Lovibond takes place by comparing the colour of the substance to a series of amber to brown glass slides, usually by a colorimeter. The scale was devised by Joseph Williams Lovibond. [1]
The Lovibond comparator is an example of a colorimeter made in Britain by The Tintometer Ltd. It was invented in the 19th century by Joseph Williams Lovibond and updated versions are still available.
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J.W. Lovibond developed the world's first practical colorimeter as a means of ensuring the high quality of his beer. By the time of his death in 1918 he had established himself as a pioneer in the field of colour science and his company, The Tintometer Limited, was already known throughout the world for its range of instrumentation and ...
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In psychometrics, item response theory (IRT, also known as latent trait theory, strong true score theory, or modern mental test theory) is a paradigm for the design, analysis, and scoring of tests, questionnaires, and similar instruments measuring abilities, attitudes, or other variables.
(The Center Square) – To pay for a new child tax credit and jails, Ohio Gov. Mike DeWine wants to raise taxes for gamblers, smokers and recreational marijuana users. DeWine proposed a $1,000 ...