Red, blue, yellow or green: the prescriptions and prescriptions issued by the doctor in the four different color codes each have a different meaning and only a limited “shelf life”, which is also quite different. Basically, the following applies: a maximum of three drugs may be prescribed per prescription. Different colors identify the prescriptions The … Red, Blue, Yellow or Green: Recipes do Not Last Forever
Introduction Power with its various forms of expression plays a major role in many sports. In addition, strength abilities can be trained to a high degree. Targeted strength diagnostics therefore plays an important role in training practice. While in the past decades mainly sport motor strength tests were used to assess individual strength abilities, nowadays … Caution Error: Measurement errors in force diagnostics
Measurement errors and reliability 1st axiom of the classical test theory The first axiom of the test theory says that a measured value is always composed of the true value and a measurement error. X = W + ex Only with perfect reliability would the measurement error = 0, and the measured value be the … Measurement errors and reliability | Caution Error: Measurement errors in force diagnostics
Objectivity Validity Definition The reliability of a measuring method is defined as the degree of accuracy with which a feature is measured. A feature is considered reliable if the determined value is only slightly faulty, regardless of whether the test measures what it claims to measure. (This corresponds to the validity) Deficiencies in reliability The … Reliability
Reliability values for the practice To work with sufficiently reliable data, the following values are recommended for practical use. The measurement error is then still within the acceptable range. R? . 50 for group comparison R? . 70 (generally in research) R? . 90 in single case diagnostics Methods for determining reliability The following methods … Reliability values for the practice | Reliability
4. consistency analysis In the consistency analysis, the test is broken down into the number of parts as there are tasks. The measure for the internal consistency is the alpha coefficient according to Cronbach. All articles in this series: Reliability Reliability values for the practice 4. consistency analysis
Objectivity Reliability Definition Validity is defined as the degree of accuracy with which a test procedure actually tests the feature it is designed to measure. So… the degree to which the test measures exactly what it claims to measure. The validity is therefore an important scientific criterion of quality. The question to be answered is: … Validity
2. criteria-related validity (criterion validity) Criterion validity defines the degree of statistical agreement between the test result and the criterion for which the test was determined. (Example: 30-meter sprint is correlated with long jump performance. )Calculated correlation = criterion validity (validity coefficient) Criterion validity is considered particularly important in performance diagnostics. The criterion validity is … 2. criteria-related validity (criterion validity) | Validity
