Maximum allowed response time for given trial

[sethamarx]

Hello,

I am writing an experiment that involves visual search circles and want to set a time limit to how many seconds a participant has to give a response before the trial is counted as incorrect. For example, I would like the participant to have 5 seconds from the onset of the visual stimuli to record a response (which is done by either pressing 'f' or 'j') before finishing the trial and moving onto the next.

Does anyone know how this would work?

Thanks

[jodeleeuw]

Hi @sethamarx,

You can use the trial_duration parameter to control the maximum length of response.

var trial = {
  type: jsPsychVisualSearchCircle,
  target: 'img/backwardN.gif',
  foil: 'img/normalN.gif',
  fixation_image: 'img/fixation.gif',
  target_present: true,
  set_size: 4,
  trial_duration: 5000
}

If no response is given, the RT will be recorded as null and correct will be false.

[sethamarx]

Thank you!