为什么每道题都感觉很难（这正是重点）

🧠 为什么重要

NCLEX 是一种 COMPUTER ADAPTIVE TEST（CAT，计算机自适应测试）。每次你回答后，它都会重新估计你的能力，然后选一道你大约有 50% 机会答对的题。答对一道，下一道会稍难一点；答错一道，下一道会稍容易一点。它在寻找你开始答错的确切水平，而不是数你答对了多少题。你会看到 85 到 150 道题，总共有五小时，包括休息时间。有些题目是不计分的预测试题，用来在考生身上试用，你无法分辨是哪几道。

The NCLEX is a COMPUTER ADAPTIVE TEST (CAT). After every answer it re-estimates your ability, then picks a question you have roughly a 50% chance of getting right. Get one right and the next is a bit harder; miss one and the next is a bit easier. It is hunting for the exact level where you start missing, not counting how many you get right. You will see between 85 and 150 items and have five hours total, including breaks. Some items are unscored pretest questions being tried out on candidates, and you cannot tell which ones they are.

🏥 真实场景

📊 两名考生参加考试。一名在 85 道题时停下，另一名在 150 道题时停下。两人都通过了。第一名很早就明显高于通过标准；计算机有 95% 的把握，于是停下了。第二名徘徊在分数线附近，所以计算机一直抽样到最大值。考试时间长不是一个判决。只有最终的能力估计才是。

📊 Two candidates sit the exam. One stops at 85 questions, the other at 150. Both pass. The first was clearly above the passing standard early; the computer was 95% sure and stopped. The second hovered near the line, so the computer kept sampling until the maximum. A long exam is not a verdict. Only the final ability estimate is.

📌 要点总结

• 每道题的难度都定在对你来说大约 50% 的答对机会，所以总感觉像在挣扎Every item is pitched at about a 50% chance for YOU, so it always feels like a struggle
• 85 到 150 道题，五小时，你拿到多少题与通过或失败无关85 to 150 items, five hours, and the number you get says nothing about pass or fail
• 不计分的预测试题混在其中且看不见，所以永远不要在任何一道题上省力Unscored pretest items are mixed in and invisible, so never 'skip effort' on one

✅ 自我测试