Center for Mind and Brain, University of California at Davis, Davis, CA, USA.
Department of Psychology, University of California at Davis, Davis, CA, USA.
Infancy. 2020 Jul;25(4):393-419. doi: 10.1111/infa.12337. Epub 2020 May 7.
As in many areas of science, infant research suffers from low power. The problem is further compounded in infant research because of the difficulty in recruiting and testing large numbers of infant participants. Researchers have been searching for a solution and, as illustrated by this special section, have been focused on getting the most out of infant data. We illustrate one solution by showing how we can increase power in visual preference tasks by increasing the amount of data obtained from each infant. We discuss issues of power and present work examining how, under some circumstances, power is increased by increasing the precision of measurement. We report the results of a series of simulations based on a sample of visual preference task data collected from three infant laboratories showing how more powerful research designs can be achieved by including more trials per infant. Implications for infant procedures in general are discussed.
与科学的许多领域一样，婴儿研究也存在效力不足的问题。由于招募和测试大量婴儿参与者的困难，这个问题在婴儿研究中更加严重。研究人员一直在寻找解决方案，正如这个特刊所展示的，他们一直专注于充分利用婴儿数据。我们通过展示如何通过增加每个婴儿获得的数据量来增加视觉偏好任务的效力，来说明一种解决方案。我们讨论了效力问题，并介绍了在某些情况下如何通过提高测量精度来增加效力的工作。我们报告了基于从三个婴儿实验室收集的视觉偏好任务数据的一系列模拟的结果，展示了如何通过每个婴儿增加更多的试验来实现更有力的研究设计。讨论了对一般婴儿程序的影响。
