Please pay close attention! You will have 3 seconds to view the first item in a pair, 5 seconds to submit your estimate of the pair’s average value and 3 seconds to see the second object and the true value of the pair.

You should pay attention to the values of the different objects, so you can update your estimate of the average value of found objects, and guess it accurately. Also, at the end of the experiment, you will get a chance to choose between items you had seen before. If you make the right choice, you'll get double your commission for that object.

And, when estimating the value of a pair, please decide your estimate quickly as the window of time for this estimate can time out.