Reading a research paper for the first time
You don't read papers like a textbook. A three-pass method that works whether you're 16 or a first-year grad student, and how to know when to give up on one.
01You are not supposed to understand it the first time
Papers are written for people already deep in the field. If you read one linearly and feel lost, that isn't a sign you're not smart enough. It's a sign you're doing it wrong.
Skilled readers use a three-pass method. Almost nobody teaches this in school, so it can feel like a secret. It isn't. It's just how the work is actually done.
02Pass 1 — five minutes
Read the title, abstract, and section headings. Look at every figure and read every caption. Read the first sentence of the introduction and the first sentence of the conclusion.
At the end of five minutes you should be able to answer: what problem are they working on, what did they do, and what did they claim to find. If you can, continue. If you can't, this paper is probably too far outside your background — find a more introductory one first.
03Pass 2 — an hour
Read the full introduction and conclusion carefully. Read the figures again — figures usually carry more information per second than paragraphs.
Skim the methods, but don't try to reproduce them mentally. Note the words you don't know as you go. Look up two or three of them. Ignore the rest for now.
By the end, you should be able to explain the paper to a friend in three or four sentences, and name one thing you're still confused about.
04Pass 3 — only when you need to
Work through the methods carefully, math and all. This is where you can actually critique the paper. Most students never need this pass for most papers. Save it for papers you're building on.
A running rule: if pass 2 leaves you unable to say what the paper is about, pass 3 will not save you. Go find a review article or a textbook chapter instead and come back later.