Skip to main content
. 2016 Feb 16;7:169. doi: 10.3389/fpsyg.2016.00169

Table 1.

Urn composition in Studies 1 and 2.

Study 1 Study 2
State (Prob) Left Urn Right Urn State (Prob) Left Urn Right Urn
Up (1/2) ● ● ○ ○ ○ ○ ● ● ● ● ○ ○ Up (1/2) ● ● ● ● ○ ○ ● ● ● ● ● ●
Down (1/2) ● ● ● ● ○ ○ ● ● ○ ○ ○ ○ Down (1/2) ● ● ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

An unknown state of the world (Up, Down) with a known prior 1/2 determines the composition of two urns (Left, Right) containing six balls each (black or white). All winning balls paid the same independently of which urn they came from.