Sternberg notes that traditional test best assess analytical and verbal skills but fail to measure creativity and practical knowledge,components also critical to problem solving and life success.

components：名词。“组成部分；因素”。它是creativity 和 practical knowledge 的同位语；形容词词组also critical to problem solving and life success 是其后置定语。

...creativity and practical knowledge,components which are also critical to problem solving and life success.

意思是：创造力和实践知识，也是解决问题和人生成功的关键因素。