Ballpark
Four quick estimates. About a minute.
No sign-up and nothing personal. When you finish, you'll see how everyone else answered.
We keep your answers, which version of each question you saw, and how long you took. No names, no emails, no accounts.
Before you start
Thanks. Here's what was going on.
The first number was the experiment.
Psychologists call that opening number an anchor. Estimates drift toward it even though it says almost nothing about the answer. This page is a pre-registered replication of the anchoring task in Many Labs 1, which ran it with more than 6,000 people in 36 samples.
Your four answers
Everyone so far
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How strong is the pull?
Each effect is a standardized difference between the two groups (Cohen's d on ranked answers, as Many Labs 1 measured it). Zero would mean the anchor did nothing; above 0.8 is conventionally large.
How it was run
The four questions, both versions of each, and the rules for which answers count all come from the Many Labs 1 materials. A coin flip on the server picked the version you saw for each question, and the design, the stopping rule and the analysis were registered before the first answer arrived. Read the method and pre-registration. The anonymous answers are public at /api/results.
Made by Aramis Lopez. Questions from Klein et al. (2014), Social Psychology 45(3), 142–152.