We are going to show you some rectangles of different sizes, and you should type in how big they look to you.

Consider the rectangle below: let's call its size 10.
Study this rectangle for a moment. Remember its size and value!

You will be shown a sequence of other rectangles and should judge their sizes based on this one. If a rectangle is twice as big as this one, answer 20. If it is half the size, answer 5. Fractional responses are allowed.

Please type in the answer as quickly as you can. For each task you can hit the enter key when you are done (this will be faster than clicking the Submit button).

Don't worry too much about being consistent or trying to remember what you assigned a rectangle before; just judge each one as it comes along. That said, very slow or wildly incorrect answers may result in a rejected HIT.

Please scroll the page as needed to ensure that the full frame is in view. Now look one last time at the rectangle and remember that its value is 10. You won't get to see it again.

When you are ready to start, click within the frame and press the space bar to start the timer and begin the tasks.