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tjmahr / lookr

Scripts for looking-while-listening and visual-world eyetracking experiments
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additional trial-level stats #2

Open tjmahr opened 10 years ago

tjmahr commented 10 years ago

CE suggested some additional measures we can use in our eye-tracking studies.

Tracking Percent: Amount of time per trial the child’s eye-gaze was recorded. That is, # frames tracked divided by # frames in the trial, or 1 minus the proportion of missing data.

Image Percent: Amount of time per trial the child looked at one of the images (such as the left or right AOI). That is, # frames on an AOI / # frames in the trial. Then we should generalize to work for all the AOIs in the task.

Attention Switch: Number of times the child focused attention on each image. So, if a child looked first at the left image, then the right, and then looked back at the left again during a particular trial, Attention Switch would be 3. We are only differentiating between 1’s and 0’s here, not between fixations within the same image.

Longest Fixation: The length of the longest continuous fixation during each trial (the longest "dwell"). We need to identify the longest dwell by location and stimulus type.

tjmahr commented 10 years ago

3 of 4 done

tjmahr commented 9 years ago

Someday, generalize to get a list of fixations by image for each Trial.