Reaction times
Hello there!
I have a simple sentence-picture-matching experiment with 2 pics and a sounding stimuli sentence.
In the logger file I have several columnes representing experimental response times ("response_time_picture_x_v_experiment", "response_time_response_experiment" and "average_response_time"). How do I know which time represents what?
Am I right that "response_time_picture_x_v_experiment" is the response time when the actual button press was recorded as X and V are my key buttons?
At which point is the "response_time_response_experiment" recorded?
Which time do I need to take into account to simply calculate the reaction times? Would it be the average one?
Comments
Hi,
every item in Opensesame gets its own time (when the item was presented to the screen) and the response time if it required a response. That means, that your item, "picture_x_v_experiment" required a response which is stored in "response_time_picture_x_v_experiment". These timings are relative to the beginning of the experiment, so not response times per trial that you are probably interested in. If you used a keyboard item to collect a response, the response times variable will be called "response_times", I believe, you can also try to compute the response time yourself by subtracting the time when a response was given, from the time the stimulus was presented.
Does that help?
Eduard
Sure, thank you!