Hello,
I am trying to modify the Tower of London script so that it automatically calculates a variable similar to that of Anderson, Anderson and Lajoie (1996). Basically, the total time taken to successfully complete the item in the minimum number of moves is transformed into a score from 3-12. Then, the number of incorrect attempts is subtracted from this score to get an item score. Summing these gives the score I want.
So, what I need is a variable that specifies the total time taken for that item, over a possible maximum of three attempts. What I am having trouble with is how I should specify this variable under the <expressions> section and the trial elements section (specifically: start round, reset round, select object, feedback trial). So far, my attempts have yielded a variable identical to values.t_choiceend or a variable that resets for each attempt of the same item.
If anyone has any advice, that would be greatly appreciated! Once I have this new variable that specifies the total item time, I think I am fine with getting the syntax to compute the Anderson et al. (1996) variable I want.
Thank you!
Nicola