[open] One up one down forward digit span task
I am trying to put together a up-and-down forward digit span task, where a participant is presented with a series of numbers and then, when prompted, will recall and enter the numbers. I am hoping that the series will start with a digit span length of 5 and then increase by 1 digit span each time a score of over 50% is achieved for a trial, potentially up to a digit span of 15 with a maximum of 10 trials. Each time a participant gets below 50% the digit span should be decreased by one. I have tried to use the GUI staircase function to achieve this. But I have failed on all accounts.
Any advice or comments would be appreciated.
Many thanks in advance