Lasky R E, Klein R E, Yarbrough C, Kallio K D
Child Dev. 1981 Sep;52(3):847-56.
The behavioral development of rural Guatemalan infants was assessed shortly after birth on a Neonatal Assessment Scale (NAS) and at 6, 15, and 24 months of age on a Composite Infant Scale (CIS). Summary variables based on NAS performance poorly predicted later assessed performance even as recently as 6 months after birth. The CIS was modestly correlated with later performance (between 3 and 7 years of age). These results are similar to those concerning samples from developed nations. Summary variables reflecting failure of easy items, the items most strongly predictive of 4-year performance, and the first principal component factor score all were highly correlated with each other. Of the variables generated they had the most predictive validity. A motor item variable had at least as impressive predictive validity as the mental items at 6 and 15 months. By 24 months the mental variable was a better predictor than the motor variable. In terms of predicting later performance, there seemed to be little justification for weighting items other than to achieve a characterization of overall performance.
危地马拉农村婴儿的行为发育在出生后不久通过新生儿评估量表（NAS）进行评估，并在6个月、15个月和24个月大时通过综合婴儿量表（CIS）进行评估。基于NAS表现的汇总变量对出生后6个月时的后期评估表现预测效果不佳。CIS与后期表现（3至7岁）呈适度相关。这些结果与来自发达国家样本的结果相似。反映简单项目失败的汇总变量、对4岁表现预测性最强的项目以及第一个主成分因子得分彼此高度相关。在生成的变量中，它们具有最强的预测效度。一个运动项目变量在6个月和15个月时具有至少与智力项目一样令人印象深刻的预测效度。到24个月时，智力变量比运动变量的预测性更好。在预测后期表现方面，除了对整体表现进行描述外，对项目加权似乎没有什么正当理由。
