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81.
Michael L. Thomas Gregory G. Brown Virginie M. Patt John R. Duffy 《Educational and psychological measurement》2021,81(1):155
The adaptation of experimental cognitive tasks into measures that can be used to quantify neurocognitive outcomes in translational studies and clinical trials has become a key component of the strategy to address psychiatric and neurological disorders. Unfortunately, while most experimental cognitive tests have strong theoretical bases, they can have poor psychometric properties, leaving them vulnerable to measurement challenges that undermine their use in applied settings. Item response theory–based computerized adaptive testing has been proposed as a solution but has been limited in experimental and translational research due to its large sample requirements. We present a generalized latent variable model that, when combined with strong parametric assumptions based on mathematical cognitive models, permits the use of adaptive testing without large samples or the need to precalibrate item parameters. The approach is demonstrated using data from a common measure of working memory—the N-back task—collected across a diverse sample of participants. After evaluating dimensionality and model fit, we conducted a simulation study to compare adaptive versus nonadaptive testing. Computerized adaptive testing either made the task 36% more efficient or score estimates 23% more precise, when compared to nonadaptive testing. This proof-of-concept study demonstrates that latent variable modeling and adaptive testing can be used in experimental cognitive testing even with relatively small samples. Adaptive testing has the potential to improve the impact and replicability of findings from translational studies and clinical trials that use experimental cognitive tasks as outcome measures. 相似文献
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Responses from almost 1,250 academic authors around the world were analysed to obtain their views on electronic publishing of learned journals. Currently, having a print version of journals is still more important to them than an electronic version. The issue of greatest importance to authors and readers is the continuing availability of back volumes, and there are strong concerns about pricing of electronic journals. The potential gains in publication speed through publishing electronically appear not to be a priority. Electronic preprint and reprint archives are used very little at present, with the exception of the physics and mathematics communities. Of all publisher‐mediated tasks, the peer‐review process is the most valued, followed by provision of citation‐linking. Respondents' views of future developments in electronic publishing are also explored. 相似文献
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