At the start of every block, the two urns are shuffled anew and then remain in their same position until the end of a given block.
{% if participant.cognitive_load == 1 %}
At the beginning of every block, you have to memorize a new {{ player.session.length_multi_digit }}-digit number.
{% elif participant.cognitive_load == 0 %}
At the beginning of every block, you will be shown a new {{ player.session.length_multi_digit }}-digit number.
You don't have to memorize it because it will be shown to you again later when you will be asked to enter it.
{% endif %}
You will then see the urn choices of type A participants of the last of the 4 rounds
of a block.
In some blocks you will see the urn choices of type A participants of
your own group, the
{% if participant.group_assignment == C.GROUP_TRIANGLE %} triangle
{% elif participant.group_assignment == C.GROUP_SQUARE %} square
{% endif %} group, and in some blocks you will see the choices of the other group, the
{% if participant.group_assignment == C.GROUP_TRIANGLE %} square
{% elif participant.group_assignment == C.GROUP_SQUARE %} triangle
{% endif %} group.
At the same time, in a given block it can either be very likely (90%) that you share the winning color with your own group, the
{% if participant.group_assignment == C.GROUP_TRIANGLE %} triangle
{% elif participant.group_assignment == C.GROUP_SQUARE %} square
{% endif %} group, or it can be very unlikely (10%).
Importantly, type A participants of the two groups,
triangle and square, earn points for the opposite colour. This means that one of both urns
will always be optimal for one group while the opposite urn is optimal for the other group in a given block.
{% if participant.cognitive_load == 1 %}
Finally, you have to recall the number that you had to memorize and enter it.
{% elif participant.cognitive_load == 0 %}
Finally, you will be shown the number again, and you have to correctly enter it.