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Difficulty level of the items (p), is assumed to be the same for each item, however, in practice, KR-21 can be applied by finding the average item difficulty across the entirety of the test. KR-21 tends to be a more conservative estimate of reliability than KR-20, which in turn is a more conservative estimate than Cronbach's α .
The FIG gives difficulty points for number of somersaults, number of body twists and the body position in somersaults (piked or straight). The total sum of the individual elements forms the difficulty score component of competitor's final score: [14] [15] Each 1/4 rotation of a somersault = 0.1 DD; Completed 360° somersault (bonus) = 0.1 DD
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Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Sport, Exercise, and Performance Psychology is a peer-reviewed academic journal published by the American Psychological Association.The journal was established in 2011 and covers research "that supports the application of psychological principles to facilitate peak sport performance, enhance physical activity participation, and achieve optimal human performance". [1]
The Wisconsin Card Sorting Test (WCST) is a neuropsychological test of set-shifting, which is the capability to show flexibility when exposed to changes in reinforcement. [1] [2] The WCST was written by David A. Grant and Esta A. Berg.
The term "sport psychology" was first used back in 1900 by Pierre de Coubertin. The field saw notably contributions from the pioneers in Wundt and de Coubertin in the early 1900s. [6] The birth of sport psychology in Europe happened largely in Germany. The first sport psychology laboratory was founded by Dr. Carl Diem in Berlin, in the early ...
Sources of information available during and after each attempt to solve a problem are remembered and form the basis for learning, which is defined as a relatively permanent improvement in skill that results from practice (Guthrie 1952 as cited by Guadagnoli and Lee 2004). Two sources of information are critical for learning: