Articles About cognitive bias
The Pygmalion Effect: What a Teacher Believes Before Meeting You
A teacher's expectation moves a child most in the first days of term and almost not at all by the end of the month. That timing is the finding nobody quotes.
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52
22 Aug
The Anchoring Effect: The First Number You Hear Decides the Rest
An irrelevant number moves what you think a thing is worth. Fifty years on the effect still replicates. The usual explanation is in worse shape.
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47
16 Aug
The Halo Effect: One Good Trait Rewrites Everything Else You Notice
Thorndike called it a constant error in 1920. More than a century later psychologists still cannot agree how much of it is bias and how much of it is real.
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49
16 Aug
The Dunning-Kruger Effect: The Statistical Artifact Hiding Inside a Famous Chart
The pattern shows up in random numbers with no people in them. Here is what the 1999 study measured and what still survives when the statistics change.
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47
15 Aug