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Reaction times – card sorting Task one 1. 2. 3. 4. Shuffle a deck of cards Time how long it takes to deal the cards randomly into two piles Repeat twice with each person in the pair Average the four times Use the table below to record your results Turn Task 1 Time in seconds 1 2 3 4 Average Turn Task 2 Time in seconds Turn Task 3 Time in seconds Turn Task 4 Time in seconds 1 2 3 4 Average 1 2 3 4 Average 1 2 3 4 Average Prediction Prediction Prediction Before you start the following tasks, make a prediction of the average time you think you will get. Task two Time how long it takes to sort the cards into a red pile and a black pile Task three Time how long it takes to sort the cards randomly into four piles Task four Time how long it takes to sort cards into four piles according to suit Questions 1. 2. 3. 4. 5. 6. Did your results agree with your predictions? Were the results similar to those of other groups? Why might there be differences? What is the time difference between tasks 1 and 2? How could you explain this? What is the time difference between tasks 1 and 3? How could you explain this? What is the time difference between tasks 2 and 4? How could you explain this? What is the time difference between tasks 3 and 4? How could you explain this?