Instructions - Page 1 of 5
Rounds
The experiment consists of
10 rounds
.
Objective
Your objective in each round is to guess the location of a
£1.00 prize
that has been hidden by the computer.
Boxes
There are
3 boxes
, labelled
A
,
B
and
C
. At the start of each round, the computer randomly selects one box and hides the
prize
in it, leaving the other 2 boxes
empty
. There is an equal chance of the prize being in any of the 3 boxes. The computer then
closes
all 3 boxes so that you cannot see inside.
First Choice
You begin each round by choosing one of the 3 closed boxes. This is your
first
choice of box.
Second Choice
After you have chosen a box, the computer randomly selects one of the
other
boxes that is
empty
, opens it and shows you that it is empty.
Note that the computer does
not
open the box you chose,
nor
does it open the box containing the prize.
You must now decide whether to
stick with
your first choice of box
(still
closed
)
or
change to
the other
closed
box. This is your
second and final
choice of box.
Win Prize
The computer now opens the two remaining closed boxes. You
win
the prize if it was hidden in your
final
choice of box.