For this practice round, either the letter S or the letter C will appear briefly before each object.

When you see the letter S, identify whether the object is a a ◯ CIRCLE or a △ TRIANGLE.

When you see the letter C, identify whether the object is red or green.

red / <%expressions.redshapemapping%>: <%values.responsekey_red_label%> - <%expressions.buttoninstruct1%>

green / <%expressions.greenshapemapping%>: <%values.responsekey_green_label%> - <%expressions.buttoninstruct1%>


Please try to respond as quickly and as accurately as possible.



Press SPACEBAR to start.