In experiment 3 all of the conditions and procedures were the same as in experiment 1 and experiment 2, except that the reward items were not visible to the children while they waited. In the previous experiments both of the reward objects were directly available to the children while they waited in the delay period. To achieve this change in condition the children were told that the food items needed to be kept fresh. The marshmallow and pretzel stick were then placed under the opaque cake tin and put under the table out of sight of the child. In this experiment the same "think food rewards" were given to the children as in experiment 2.
