Is the sentence True or False?
 
THIS IS A DEMO EXPERIMENT; NO DATA WILL BE COLLECTED.
  
  In this experiment, you will see pictures of four people for four seconds.  During this time, pay attention to all of the people that you see.  After four seconds, a box will appear around one of the people.  After one second, a sentence about that person will appear. Your job is to decide whether these sentences are true
 or false.   Press P for true and Q for false.
  
  Your responses in this experiment are
  timed.  Please try to respond to each question as quickly and
 accurately as possible. 
Legal information: By answering the
  following questions, you are participating in a study being performed by
  developmental psychologists 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.
 
 
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Practice Questions:
 First you will have a chance to practice with some different pictures. Remember, first you will see four pictures, and you should pay attention to all four pictures until a box appears around one of them.  
 After the red box appears, you will see a sentence.  The sentence is about the picture with the box around it.  You must decide as quickly as possible whether the sentence is true or false of the indicated picture.  Press Q for FALSE and P for TRUE. 
  
  
   
Press space to continue.
Throughout this experiment, please use your left hand to
  press "Q" (False) and your right hand to press "P" (True). 
  
   
Please use your left hand to press "Q" (false) to continue.
Thank you.
  
   
Now please use your right hand to press "P" (true). This will begin the practice trials.
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This is the end of the practice questions.
  Remember, during the game we will be recording how quickly you
  respond, so please respond as quickly and accurately
  as possible.
  
Press space to begin the matching game!
Please answer a few questions about yourself.