I’m having difficulty with the accuracy of the timing for an experiment. Some details –
I have v 2.0 installed on my lab computer, but was having considerable trouble with it in a number of domains. I was told, after emailing SuperLab support, that purchasing the newer version would likely fix these problems.
So, I am now using the downloaded demo version 4.0 in order to assess whether it is worth purchasing for us, but am still encountering problems. Specifically, my experiement is taking longer to run than it should.
My experiment consists of 8 blocks, each containing 56 fixation screens at 500ms, 56 ISIs (presented as a blank Bitmap file - 961 KB) at 2500ms, and 56 Bitmap files (2305 KB each) at 200ms. All in all, this should mean that each block adds up to 2m59s. However, when I run the paradigm, each block takes 3m26s.
My computer is a Dell with Intel Pentium 4, 1.99 GHz, 1.00 GB of RAM, running Windows XP Professional as its OS.
I hope this is enough information to garner some help. Timing is crucial to this experiment, and I was hoping you would have some insight as to why it is not accurate.
Many thanks for any help you can offer.