测试-重新测试可靠性-确定测量值在多个测试会话中保持一致-对于测量至关重要,理解,并预测婴儿语言发育的个体差异。然而,以前在婴儿言语感知任务中建立测量可靠性的尝试是有限的,经常使用的婴儿措施的可靠性在很大程度上是未知的。当前的研究调查了在ManyBabies1合作研究项目的背景下,在大样本(N=158)中,婴儿对婴儿定向语音的偏好高于成人定向语音的重测可靠性。要求实验室带来参与的婴儿进行第二次预约,重新测试婴儿对婴儿主导演讲的偏好。Thisapproachallowsustoestimatetest-retestreliabilityacrossthreedifferentmethodsusedtoinvestigatepreferentlistingin婴儿期:thehead-turnpreferenceprocedure,中央固定,和眼动追踪。总的来说,我们在婴儿言语偏好的测量中没有发现测试-重测可靠性的一致证据(总体r=0.09,95%CI[-0.06,0.25]).虽然增加了婴儿需要参与分析的试验数量,但显示了重测可靠性的数字增长,这也大大减少了研究的有效样本量。因此,未来对婴儿发育的研究应考虑到并非所有的实验措施都适用于评估婴儿之间的个体差异.研究重点:我们在一个大的预登记样本中(N=158)评估了婴儿对婴儿主导语音的重测可靠性。在婴儿言语偏好的测量中,没有一致的重测可靠性证据。应用更严格的标准纳入参与者可能会导致更高的测试-重测可靠性,但以样本量大幅减少为代价。依赖于稳定的个体差异的发展研究应考虑其措施的潜在可靠性。
Test-retest reliability-establishing that measurements remain consistent across multiple testing sessions-is critical to measuring, understanding, and predicting individual differences in infant language development. However, previous attempts to establish measurement reliability in infant speech perception tasks are limited, and reliability of frequently used infant measures is largely unknown. The current study investigated the test-retest reliability of infants\' preference for infant-directed speech over adult-directed speech in a large sample (N = 158) in the context of the ManyBabies1 collaborative research project. Labs were asked to bring in participating infants for a second appointment retesting infants on their preference for infant-directed speech. This approach allowed us to estimate test-retest reliability across three different methods used to investigate preferential listening in infancy: the head-turn preference procedure, central fixation, and eye-tracking. Overall, we found no consistent evidence of test-retest reliability in measures of infants\' speech preference (overall r = 0.09, 95% CI [-0.06,0.25]). While increasing the number of trials that infants needed to contribute for inclusion in the analysis revealed a numeric growth in test-retest reliability, it also considerably reduced the study\'s effective sample size. Therefore, future research on infant development should take into account that not all experimental measures may be appropriate for assessing individual differences between infants. RESEARCH HIGHLIGHTS: We assessed test-retest reliability of infants\' preference for infant-directed over adult-directed speech in a large pre-registered sample (N = 158). There was no consistent evidence of test-retest reliability in measures of infants\' speech preference. Applying stricter criteria for the inclusion of participants may lead to higher test-retest reliability, but at the cost of substantial decreases in sample size. Developmental research relying on stable individual differences should consider the underlying reliability of its measures.