J Speech Lang Hear Res. 2014 Jun 1;57(3):887-900. doi: 10.1044/2013_JSLHR-L-13-0008.
The authors of this study investigated the validity of tense and agreement productivity (TAP) scoring in diverse sentence frames obtained during conversational language sampling as an alternative measure of finiteness for use with young children.
Longitudinal language samples were used to model TAP growth from 21 to 30 months of age for 37 typically developing toddlers. Empirical Bayes (EB) linear and quadratic growth coefficients and child sex were then used to predict elicited grammar composite scores on the Test of Early Grammatical Impairment (TEGI; Rice & Wexler, 2001) at 36 months.
A random-effects quadratic model with no intercept best characterized TAP growth, replicating the findings of Rispoli, Hadley, and Holt (2009). The combined regression model was significant, with the 3 variables accounting for 55.5% of the variance in the TEGI composite scores.
These findings establish TAP growth as a valid metric of finiteness in the 3rd year of life. Developmental and theoretical implications are discussed.
本研究的作者探讨了在会话语言抽样中获得的不同句型中的时态和一致性产性（TAP）评分的有效性，将其作为一种替代有限性的衡量标准，用于评估幼儿。
使用纵向语言样本来对 37 名典型发展的幼儿从 21 到 30 个月的 TAP 增长进行建模。然后，使用经验贝叶斯（EB）线性和二次增长系数以及儿童性别来预测 36 个月时的早期语法损伤测试（TEGI；Rice 和 Wexler，2001）的综合语法得分。
没有截距的随机效应二次模型最好地描述了 TAP 的增长，复制了 Rispoli、Hadley 和 Holt（2009）的发现。综合回归模型是显著的，这 3 个变量解释了 TEGI 综合得分的 55.5%。
这些发现确立了 TAP 的增长作为 3 岁时有限性的有效衡量标准。讨论了发展和理论上的意义。
