insomnia

n. difficulty in initiating or maintaining a restorative sleep, which results in fatigue, the severity or persistence of which causes clinically significant distress or impairment in functioning. Such sleeplessness may be caused by a transient or chronic physical condition or psychological disturbance. Also called agrypnia; ahypnia; ahypnosia; anhypnia. See disorders of initiating and maintaining sleep; fatal familial insomnia; initial insomnia; intermittent insomnia; middle insomnia; primary insomnia; pseudoinsomnia; terminal insomnia. —insomniac n.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

January 22nd 2025

data analysis

the process of applying graphical, statistical, or quantitative techniques to a set of observations or measurements in order to summarize it or to find general patterns. For example, a very basic data analysis would involve calculating descriptive statistics (e.g., mean, median, mode, standard deviation) and possibly graphing the observations with a histogram or bar graph.