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Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
The Farnsworth–Munsell 100 Hue Color Vision test is a color vision test often used to test for color blindness.The system was developed by Dean Farnsworth in the 1940s and it tests the ability to isolate and arrange minute differences in various color targets with constant value and chroma that cover all the visual hues described by the Munsell color system. [1]
The Delis–Kaplan Executive Function System ( D-KEFS) is a neuropsychological test used to measure a variety of verbal and nonverbal executive functions for both children and adults (ages 8–89 years). This assessment was developed over the span of a decade by Dean Delis, Edith Kaplan, and Joel Kramer, and it was published in 2001.
Rapid automatized naming (RAN) is a task that measures how quickly individuals can name aloud objects, pictures, colors, or symbols (letters or digits). Variations in rapid automatized naming time in children provide a strong predictor of their later ability to read, and is independent from other predictors such as phonological awareness, verbal IQ, and existing reading skills. [1]
3–7% [ 2][ 5] Dyslexia, previously known as word blindness, is a learning disability ('learning difficulty' in the UK [ 6]) that affects either reading or writing. [ 1][ 7] Different people are affected to different degrees. [ 3] Problems may include difficulties in spelling words, reading quickly, writing words, "sounding out" words in the ...
Color blindness (color vision deficiency) is the decreased ability to see color or differences in color. It can impair daily color tasks such as selecting ripe fruit or choosing clothing, as well as safety-related tasks such as interpreting traffic lights. While the disability of color blindness is considered minor, the use of color in safety ...
Pre-1900. Adolph Kussmaul. The concept of "word-blindness" ( German: "wortblindheit"), as an isolated condition, was first developed by the German physician Adolph Kussmaul in 1877. [ 1][ 2] Identified by Oswald Berkhan in 1881, [ 3] the term 'dyslexia' was later coined in 1887 by Rudolf Berlin, [ 4] an ophthalmologist practicing in Stuttgart ...
Dyslexia. Dyslexia is a disorder characterized by problems with the visual notation of speech, which in most languages of European origin are problems with alphabet writing systems which have a phonetic construction. [1] Examples of these issues can be problems speaking in full sentences, problems correctly articulating Rs and Ls as well as Ms ...
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