ABSTRACT

Objective

The Wechsler Preschool and Primary Scale of Intelligence – Fourth Edition Australian and New Zealand Standardised Edition (WPPSI-IV^A&NZ) is one of the most widely used intelligence assessments for children aged 2 years 6 months to 7 years 7 months. Given the impact of clinical and placement decisions that are supported by WPPSI-IV^A&NZ results, it is important to provide evidence of criterion-related validity. Criterion-related validity refers to the degree to which test scores are associated with an external criterion (e.g., pre-existing diagnosis or classification).

Method

Two studies of children with intellectual giftedness (n = 19) and intellectual disability (n = 15) were conducted to determine if the constructs measured by the WPPSI-IV^A&NZ perform as expected in criterion groups with known characteristics.

Results

Independent sample t-tests revealed mean composite scores for intellectually gifted children were significantly higher than matched controls, with the exception of the Processing Speed Index and Cognitive Proficiency Index. Children with intellectual disability on average obtained significantly lower mean scores on all composites relative to matched controls.

Conclusion

Results indicated that the WPPSI-IV^A&NZ can provide valid estimates of intellectual ability for children with intellectual giftedness and intellectual disability that align with their previous diagnosis or classification.

中文翻译：

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WPPSI-IVA&NZ 智障儿童的表现

摘要

客观的

Wechsler 学龄前和小学智力量表 - 第四版澳大利亚和新西兰标准版 (WPPSI-IV ^A&NZ ) 是最广泛使用的智力评估之一，适用于 2 岁 6 个月至 7 岁 7 个月的儿童。鉴于 WPPSI-IV ^A&NZ结果支持的临床和安置决定的影响，提供与标准相关的有效性的证据非常重要。与标准相关的有效性是指测试分数与外部标准（例如，预先存在的诊断或分类）相关联的程度。

方法

对具有智力天赋 ( n = 19) 和智力障碍 ( n = 15)的儿童进行了两项研究，以确定 WPPSI-IV ^A&NZ测量的结构在具有已知特征的标准组中是否如预期的那样执行。

结果

独立样本 t 检验显示，智力天才儿童的平均综合分数显着高于匹配的对照组，但处理速度指数和认知能力指数除外。与匹配的对照组相比，智障儿童在所有复合材料上的平均得分明显较低。

结论

结果表明，WPPSI-IV ^A&NZ可以为具有智力天赋和智力障碍的儿童提供与其先前诊断或分类一致的智力能力的有效估计。