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Anna M. Langener Anne-Wil Kramer Wouter van den Bos Hilde M. Huizenga 《The British journal of developmental psychology》2022,40(1):35-45
Numerous developmental studies assess general cognitive ability, not as the primary variable of interest, but rather as a background variable. Raven’s Progressive Matrices is an easy to administer non-verbal test that is widely used to measure general cognitive ability. However, the relatively long administration time (up to 45 min) is still a drawback for developmental studies as it often leaves little time to assess the primary variable of interest. Therefore, we used a machine learning approach – regularized regression in combination with cross-validation – to develop a short 15-item version. We did so for two age groups, namely 9 to 12 years and 13 to 16 years. The short versions predicted the scores on the standard full 60-item versions to a very high degree r = 0.89 (9–12 years) and r = 0.93 (13–16 years). We, therefore, recommend using the short version to measure general cognitive ability as a background variable in developmental studies. 相似文献
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The Battle of the Screens: Unraveling Attention Allocation and Memory Effects When Multiscreening
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Multiscreening, the simultaneous usage of multiple screens, is a relatively understudied phenomenon that may have a large impact on media effects. First, we explored people's viewing behavior while multiscreening by means of an eye‐tracker. Second, we examined people's reporting of attention, by comparing eye‐tracker and self‐reported attention measures. Third, we assessed the effects of multiscreening on people's memory, by comparing people's memory for editorial and advertising content when multiscreening (television–tablet) versus single screening. The results of the experiment (N = 177) show that (a) people switched between screens 2.5 times per minute, (b) people were capable of reporting their own attention, and (c) multiscreeners remembered content just as well as single screeners, when they devoted sufficient attention to the content. 相似文献