Question

Take 10 playing cards - 5 black and 5 red - shuffle them good (or let someone else do the shuffle) put them face down and try to guess the color of each card (red or black). Write down the percent correct. Repeat the exercise with 30 cards -15 black and 15 red. The correct way to do it is to write down your answers as you go along and compare to the actual card order in the end, otherwise you will be "counting cards" and know how many red or black still remain. Better yet, let someone else do it to you without showing you the correct cards until the end. 1) Report your percent correct for both cases. And answer the following questions: 2) Theoretically, what value of percent correct signifies absolutely no psychic powers at all? (that is, chance performance) 3) Theoretically, in which of the two cases it is "easier" to show psychic powers? (that is, high percent correct), why? 4) Does your data match the theory?

Answer 1