Millisecond Forums

Hi, I'm trying to program an experiment similar to the 'staircase method' experiment in the inquisit task library, except rather than using shades of colour, using electric shock stimuli to determine someone's pain threshold. This will involve sending through an electric shock, asking the participant whether it is painful, and if they say 'no' increasing the shock level until the first 'yes' (called a reversal), and then having six reversals before determining the threshold. I have used inquisit with the parallel ports to send shock stimuli in the past, but inquisit sees these as individual stimuli, rather than as having an inherent order like say the colour numbering (where 0 = none of the colour, 255 = maximum amount of that colour), so I'm not sure if it will be possible to do the conditional branching in a method similar to the 'staircase method' experiment, or whether it is possible at all in inquisit. Has anyone had any experience with numbering ported stimuli, and have an idea of whether it will be possible for inquisit to work out what an increase or decrease along this order would be? Thank you very much in advance!