Glossary K

Koniocellular neurons refer to ganglion cells located throughout the retina

Koran refers to the holy book of Islam. Koran is also spelled Quran or Qur’an.

Korsakoff psychosis refers to an amnestic disorder caused by damage to the thalamus as a result of chronic, heavy alcohol use.

Korsakoff's syndrome refers to a permanent form of Dementia associated with long-term alcohol use in which the person develops retrograde and anterograde amnesia, leading to an inability to remember recent events or learn new information.

Krause's end bulbs refer to proprioceptor sensitive to touch and thermal changes found in the skin, subcutaneous tissue, lip and eyelid mucosa, and external genitals.
KSAs is the acronym for knowledge, skills, abilities, and other characteristics that are needed to complete a job or task successfully.

Kuder-Richardson 20 refers to a formula for estimating the internal consistency of a test. The KR20 or KR20 method is equivalent to the average split-half correlation obtained from all possible splits of the items. For the KR20 formula to be applied, all items must be scored either 0 or 1.

Kuder-Richardson formula 20 refers to a formula for computing split-half reliability that corrects for the fact that individual scores are based on only half of the total test items; a statistic used to determine internal reliability of tests that use items with dichotomous answers (yes/no, true/ false). Kuder-Richardson formula 20 is also known as Kuder-Richardson 20 , KR20 or KR20 method. Please see also Kuder-Richardson 20