Poets called it the Golden Age. A golden age now describes a historical period of great artistic,scientific or economic progress.

VOA: special.2010.06.06

And then finally, at around age twelve, you could get abstract and scientific reasoning.

最后,大约在十二岁的时候,儿童的抽象推理和科学推理能力得以完善

耶鲁公开课 - 心理学导论课程节选