The Graded Naming Test (GNT) is commonly used in clinical and research settings to assess nominal functions. However, normative data for the GNT is over 20 years old and norms for the older adult population are rather limited. Hence, confounding factors such as generational familiarity due to cultural changes need to be considered when applying the currently available norms. Moreover, normative data for the older population (80–97) are virtually absent. Such factors can be powerful confounds that can lead to incorrect interpretation of test scores. We gathered data for the GNT from 326 healthy controls aged between 18 and 97 years. Surprisingly, we found no decline in performance for older adults, even for the cohort aged 80–97 years (N = 40). In contrast, the youngest cohort (aged 18–29 years) performed unexpectedly below the whole sample mean. An item‐by‐item analysis revealed that five test items were unfamiliar to the youngest age cohort. To account for this generational familiarity effect, we created a revised 25‐item GNT. The performance of the youngest cohort on the 25‐item GNT was no longer below the whole sample mean. The performance of the oldest cohort (80–97 years old) on the revised GNT was characterized by a significant decline in performance for the oldest cohort with an average NART IQ. By contrast, those with a NART IQ above the average range did not show a decline. This suggests that factors such cognitive reserve arrested the decline in performance in the oldest age cohort with higher premorbid IQ.

中文翻译：

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新修订的分级命名测试和新的规范数据，包括老年人（80-97 岁）。

分级命名测试 (GNT) 通常用于临床和研究环境中以评估名义功能。然而，GNT 的规范数据已有 20 多年的历史，老年人口的规范相当有限。因此，在应用当前可用的规范时，需要考虑混杂因素，例如由于文化变化而导致的代际熟悉。此外，老年人口（80-97 岁）的规范数据几乎不存在。这些因素可能是强大的混淆因素，可能导致对考试成绩的错误解释。我们从 326 名年龄在 18 至 97 岁之间的健康对照收集了 GNT 数据。令人惊讶的是，我们发现老年人的表现没有下降，即使是 80-97 岁的人群（N = 40）。相比之下，最年轻的队列（18-29 岁）的表现出乎意料地低于整个样本平均值。逐项分析显示，最年轻的年龄组不熟悉五个测试项目。为了解释这种代际熟悉效应，我们创建了一个修订的 25 项 GNT。最年轻的队列在 25 项 GNT 上的表现不再低于整个样本平均值。最老队列（80-97 岁）在修订 GNT 上的表现的特点是平均 NART IQ 最老的队列的表现显着下降。相比之下，那些 NART IQ 高于平均范围的人没有表现出下降。这表明认知储备等因素阻止了病前智商较高的年龄最大的队列的表现下降。