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Reaction Time Statistics:

Here are some interesting statistics from the Reaction Time database.
These change in real time, as more people take the test.

The average (median) reaction time is 215 milliseconds.
I've recorded 894937 clicks so far.

Quick Jump: Overall | Time Waited | By Time of Day | By Month

Overall Distribution of Reaction Times:

You can clearly see a nice bell curve here, peaking around 200 milliseconds.

At about 120 ms, it becomes apparent that most of these clicks are the result of clicking too soon, and just getting lucky. Otherwise, you might see a smoother ramp from 0 to 130, but it seems to just be noise.

The cutoff for leaderboard scores used to be 130, but some of the fastest 99.9 percentile of players on the site complained, pointing out how often they got legitimate scores in that range. Now it's 100 ms.

 

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Time Waited Before Green Light vs. Average Reaction Time

2500
232.4772 
2600
230.2268 
2700
227.4258 
2800
226.0379 
2900
224.7455 
3000
223.4690 
3100
223.0716 
3200
222.0453 
3300
222.5157 
3400
220.5597 
3500
220.6177 
3600
219.5232 
3700
220.1928 
3800
219.8852 
3900
220.6412 
4000
220.7194 
4100
220.9503 
4200
220.1383 
4300
220.9681 
4400
220.6550 
4500
221.7961 
4600
223.3180 
4700
222.6419 
4800
221.7287 
4900
222.1684 
5000
223.6465 

Reaction times, by day of the week:

Sunday
225.2574 
Monday
224.4039 
Tuesday
225.9568 
Wednesday
224.7316 
Thursday
223.6774 
Friday
222.8775 
Saturday
226.2109 

Reaction times, by time of day:

0:00
203.1194 
1:00
202.8437 
2:00
211.6198 
3:00
208.3757 
4:00
210.1069 
5:00
208.8244 
6:00
206.0284 
7:00
201.8020 
8:00
208.2441 
9:00
208.3391 
10:00
206.4671 
11:00
205.8534 
12:00
206.5786 
13:00
206.3983 
14:00
208.9341 
15:00
200.4355 
16:00
203.4517 
17:00
202.7894 
18:00
199.8783 
19:00
204.1346 
20:00
205.5346 
21:00
203.1114 
22:00
208.7238 
23:00
205.8575 

Reaction times, by month:

2006-12
231.8037 
2007-01
230.1930 
2007-02
221.4461 
2007-03
213.5912 
2007-04
218.2763 
2007-05
223.6359 
2007-06
227.8772 
2007-07
218.9913 
2007-08
223.1547 
2007-09
225.2974 
2007-10
225.6755 
2007-11
226.1824 
2007-12
224.9115 
2008-01
224.2142 
2008-02
228.6326 
2008-03
225.4958 
2008-04
224.1358 
2008-05
221.8752 
2008-06
223.0666 
2008-07
219.0635 
2008-08
223.5781 
2008-09
227.9092 
2008-10
228.1353 

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