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Lindsley indicated that it took 20 to 30 minutes to share one project because each chart had to be explained and described. Thus, the standard celeration chart was developed in which the x-axis is an add scale to accommodate a full school semester (140 days). The y-axis was on a multiply scale accommodating frequencies ranging from 1 per day to ...
Ogden R. Lindsley (August 11, 1922, in Providence, Rhode Island – October 10, 2004) was an American psychologist. He is best known for developing precision teaching (including the Standard Celeration Chart). In 1948, he obtained an A.B. in Psychology from Brown University and two years later in 1950 a Sc.M. in Experimental Psychology.
In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc. This line, designated 6/6 (or 20/20), is the ...
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
Sloan letters, designed by Louise Sloan in 1959, are a set of optotypes used to test visual acuity generally used in Snellen charts and logMAR charts. This set of optotypes consists of ten specially formed "letters", C, D, H, K, N, O, R, S, V and Z. [1] These letters, unlike the ones used in older Snellen charts, are designed to give acuity ...
Behaviour therapy. ICD-9-CM. 94.33. MeSH. D001521. [edit on Wikidata] Behaviour therapy or behavioural psychotherapy is a broad term referring to clinical psychotherapy that uses techniques derived from behaviourism and/or cognitive psychology. It looks at specific, learned behaviours and how the environment, or other people's mental states ...
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