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Often discussed in tandem with KR-20, is Kuder–Richardson Formula 21 (KR-21). [4] KR-21 is a simplified version of KR-20, which can be used when the difficulty of all items on the test are known to be equal. Like KR-20, KR-21 was first set forth as the twenty-first formula discussed in Kuder and Richardson's 1937 paper.
A desirable difficulty is a learning task that requires a considerable but desirable amount of effort, thereby improving long-term performance. It is also described as a learning level achieved through a sequence of learning tasks and feedback that lead to enhanced learning and transfer.
For example, in the above five-point Likert item, the inference is that the 'distance' between category 1 and 2 is the same as between category 3 and 4. In terms of good research practice, an equidistant presentation by the researcher is important; otherwise a bias in the analysis may result.
Further, the logit (log odds) of a correct response is () (assuming =): in particular if ability θ equals difficulty b, there are even odds (1:1, so logit 0) of a correct answer, the greater the ability is above (or below) the difficulty the more (or less) likely a correct response, with discrimination a determining how rapidly the odds ...
Task difficulty has received considerable attention in prior research (Fleighman and Quaintance 1984; Gentile 1998). Important to the challenge point framework, task difficulty is not explicitly defined. Alternately, two broad categories can encompass these elements: Nominal task difficulty
Smiling tadpole person (combined head and body) drawn by a child aged 4 + 1 ⁄ 2. The Draw-a-Person test (DAP, DAP test), Draw-A-Man test (DAM), or Goodenough–Harris Draw-a-Person test is a type of test in the domain of psychology. It is both a personality test, specifically projective test, and a cognitive test like IQ. The test subject ...
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 ...
Standardized tests have a consistent, uniform method for scoring. [4] This means that all test takers who answer a test question in the same way will get the same score for that question. The purpose of this standardization is to make sure that the scores reliably indicate the abilities or skills being measured, and not other variables. [3]