Similar tests are often used to diagnose mental disabilities and declines, including dementia。

类似的测试常被用于诊断智力残疾和包括痴呆症在内的智力衰退等。

The research by the University of Virginia found that in nine out of 12 tests the average age at which the top performance was achieved was 22.

弗吉尼亚大学开展的这项研究发现，在总共12项测试中，其中有9项获得最高分的调查对象平均年龄是22岁。

The first age at which performance was significantly lower than the peak scores was 27 – for three tests of reasoning, speed of thought and spatial visualisation. Memory was shown to decline from the average age of 37. In the other tests, poorer results were shown by the age of 42.

从逻辑推理、反应速度和空间想象力三项测试的结果来看，调查对象的得分首次明显低于之前的最高水平是在27岁。记忆力开始衰退的平均年龄是37岁。在其它几项测试中，调查对象的得分在42岁时开始降低。

However, the report published in the academic journal Neurobiology Of Ageing, found that abilities based on accumulated knowledge, such as performance on tests of vocabulary or general information, increased until at the age of 60.

但发表于《衰老神经生物学》学术期刊上的这项研究报告表明，从词汇或常识测试的结果看，基于知识积累的能力到了60岁会开始增长。

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