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The paper is over. A key appears on one channel, then another, and by evening you have matched your responses four times. Each time the total moves a little, and each time you feel less sure of it. Checking again gives you no new information, but it can make you doubt yourself more.
Why do I keep checking the answer key after an exam?
Checking feels as if it should settle the question. Research on repeated checking suggests it can do the opposite. Marcel van den Hout and Merel Kindt asked healthy volunteers to check a virtual gas stove again and again (Behaviour Research and Therapy, 2003). In the first two of three experiments, repeated checking left memory accuracy unchanged but made recollections less vivid and detailed, and in all three it lowered people's confidence in their memory.
The study used a stove, not an exam, but the pattern likely carries over: a tenth look at question 14 teaches you nothing new and may blur your memory of what you marked.
There is a second reason the urge keeps coming back: a score you don't know yet feels like an unfinished task. E. J. Masicampo and Roy Baumeister found that unfinished goals caused intrusive thoughts during an unrelated reading task and worse performance on an anagram task (Journal of Personality and Social Psychology, 2011). When participants made a specific plan for the goal, those effects disappeared, even though the goal itself was still unfinished. The fix is a plan, not one more check.
Does checking the key again change anything?
No. Your responses were fixed when you submitted. Only the official process can change your score: a provisional key, a window to challenge it, and a final key. See our guide to challenging an NTA provisional answer key. A single careful check is useful for two jobs only: deciding whether to challenge a question, and finding out which topics went wrong.
How do you check the answer key once and move on?
Use this check-once plan. It takes about 45 minutes.
Choose one key. Use the official provisional key if it has been released; before that, pick one unofficial key and ignore the rest.
Sit at a desk with your response record, the key and a notebook. Set a timer for 45 minutes.
Go through every question once and mark it right, wrong or unsure. Don't go back over any question during this pass.
Write your score as a range, not a single number: the lowest it could be if every unsure answer is wrong, and the highest if every one is right.
For each unsure question, decide now whether you would challenge it, and write down the evidence (for example, the NCERT page). If you wouldn't challenge it, leave it as unsure.
Write one line: "My range is X to Y. I will look again only when the official key or the result comes out."
Put the papers in a folder, mute the key-discussion groups, and write down tomorrow's first task.
A worked example
Suppose your one pass gives 41 right, 6 wrong and 3 unsure on a paper marked +4 for a correct answer and -1 for a wrong one. (The numbers are made up; use your exam's official marking scheme.) Your certain marks are 41 x 4 - 6 = 158. If all 3 unsure answers are wrong, you get 155; if all 3 are right, you get 170. Write "155 to 170" and stop. Another pass against the same key is unlikely to move it outside that range.
What should I do when the urge to recheck comes back?
Postpone it. In a small preliminary trial, 53 people with high levels of worry were given a single 30-minute worry period each day for two weeks, and that cut worry, anxiety and sleep problems more than the comparison instructions did (Behavior Modification, 2013). Try a version of it yourself: when the urge comes, write the question on a "later" list, and look at the list in one fixed slot, say 6 pm, for no more than 30 minutes.
When the urge hits, say this to yourself: "I've already checked. My range is 155 to 170. Nothing new arrives before the official key. My next task is..."
Parents, try this: "What's your range? Good. Let's not open it again until the official key. What's the plan for tomorrow?"
Make the next task real. If some of your 6 wrong answers were wrong-method mistakes, work each one through once in the Fermi Problem Library, where a step-by-step solver explains the reasoning rather than printing an answer. Then move on to your next exam, a break, or the ideas in what to do while waiting for results.
When is it more than a habit?
If you can't stop checking even after following a plan, or you are losing sleep, skipping meals or feeling hopeless, talk to a parent, a teacher or a school counsellor. In India you can also call Tele MANAS on 14416, the government's toll-free 24x7 mental health helpline. Our guide to exam stress and when to get help covers the signs to watch for.
Check once, write your range, and give tomorrow your attention instead.
