The studies

Do 15-Month-Old Infants Understand False Beliefs?

A study that questioned earlier findings

Do 15-Month-Old Infants Understand False Beliefs?

Kristine H. Onishi, Renée Baillargeon · 2005 · Science

Children
About 60 babies
Where
A lab in Illinois, United States
Ages
About 15 months
How
Researchers measured how long babies looked at different scenes
What it found
Babies looked longer when an actor searched where she couldn't know the toy was, which the authors read as early understanding of untrue beliefs.
Limits
Reports group results only. Later attempts to repeat studies like this often failed.

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