Progress bar: {{}}/{{}}
Stanford Department of Psychology
In this experiment, we are interested in how people detect objects.
This HIT involves watching some videos in the browser, and some browsers may not support the code that we use. We have tested this on Chrome, Safari and Firefox, and so we are restricting this HIT to only these three browsers.
Legal information: By answering the
following questions, you are participating in a study being performed by
cognitive scientists in the Stanford Department of Psychology. If you have
questions about this research, please contact us at languagecoglab@gmail.com.
You must be at least 18 years old to
participate. Your participation in this research is voluntary. You may
decline to answer any or all of the following questions. You may decline
further participation, at any time, without adverse consequences. Your
anonymity is assured; the researchers who have requested your
participation will not receive any personal information about you.
We have recently been made aware that your public Amazon.com profile can be accessed via your worker ID if you do not choose to opt out. If you would like to opt out of this feature, you may follow instructions available here:
http://www.amazon.com/gp/help/customer/display.html?nodeId=16465241
Instructions
This is a visual detection task. We will be showing you several videos of a ball moving around. Each movie is less than 30s long. The progress bar at the top shows you how many trials you have completed. If you wish to take a break, please do not do so while a trial is on-going, but you may do so before moving onto the subsequent trial.
There are 3 things to do per trial, and there are 4 keys that you have to press: "b", "q", "f", and "j". Please respond as quickly as you can in steps 2 and 3 below.
1) Press "b" to start the movie.
2) Press "q" with your left hand once the character leaves the scene. There is a time limit within which you have to respond.
3) Once the "fence" falls, press "j" if the ball is present.
Press "f" if the ball is absent.
1) Press "b" to start the movie.
2) Press "q" with your left hand once the character leaves the scene. There is a time limit within which you have to respond.
3) Once the "fence" falls, press "j" if the ball is present.
Press "f" if the ball is absent.