naa a22 4500 510776396 CHVBK 20180411083231.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.3758/s13428-012-0223-z doi (NATIONALLICENCE)springer-10.3758/s13428-012-0223-z Ellis Jules School of Psychology and Artificial Intelligence, Radboud University Nijmegen, P.O. Box 9104, 6500 HE, Nijmegen, The Netherlands aut A standard for test reliability in group research [Elektronische Daten] [Jules Ellis] Many authors adhere to the rule that test reliabilities should be at least .70 or .80 in group research. This article introduces a new standard according to which reliabilities can be evaluated. This standard is based on the costs or time of the experiment and of administering the test. For example, if test administration costs are 7% of the total experimental costs, the efficient value of the reliability is .93. If the actual reliability of a test is equal to this efficient reliability, the test size maximizes the statistical power of the experiment, given the costs. As a standard in experimental research, it is proposed that the reliability of the dependent variable be close to the efficient reliability. Adhering to this standard will enhance the statistical power and reduce the costs of experiments. The Author(s), 2012 Attenuation nationallicence Coefficient alpha nationallicence Efficient nationallicence Reliability nationallicence Power nationallicence Behavior Research Methods Springer-Verlag 45/1(2013-03-01), 16-24 45:1<16 2013 45 13428 https://doi.org/10.3758/s13428-012-0223-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-012-0223-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ellis Jules School of Psychology and Artificial Intelligence, Radboud University Nijmegen, P.O. Box 9104, 6500 HE, Nijmegen, The Netherlands aut NATIONALLICENCE 773 0- Behavior Research Methods Springer-Verlag 45/1(2013-03-01), 16-24 45:1<16 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer