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Marks and Channels AE

✓ Published3🌍 Public
AAlena Egorova
Last edited Feb 13, 2023
Created on Feb 6, 2023
Forked from Marks and Channels

The visualization displays eye-tracking data from 86 undergraduate students solving math problems, focusing on average fixation duration and response patterns. It shows a simple bar chart where each rectangle’s height represents a data value, with white lines marking the minimum threshold. The example uses d3-selection and d3’s join pattern to render twelve small multiples of the same chart, each built with a reusable `length` function that draws rect and line elements. The fixed dataset contains five pairs of numbers, and the charts are laid out as separate SVG elements with a cadetblue background.

AI-generated description

This is a dataset from WPI MAPLE Lab study conducted in 2021-2022. 86 undergraduate students solved math problems in the lab and their eye-movements during the solving process were collected with eye-tracking software. Each participant solved 24 problems: 12 with and 12 without brackets.

Data dictionary:

  • Participant_ID' - Anonymized participant ID. Categorical.
  • 'Problem_ID' - Problem title. Categorical.
  • 'Order' - The order of the problem in the experiment. Ordinal.
  • 'Brackets' - If equation contains brackets. Categorical.
  • 'Response_time' - How long did it take fot participant to response. Quantitative.
  • 'Correct_or_not' - If participant’s response was correct ot not. Categorical.
  • 'Average_duration_of_fixations' - How long participant fixated on each digit (on average). Quantitative.
  • 'No_fixation_percentage' - On how many digits participant did not fixate? Quantitative.

The following information could be visualized:

  1. Did average fixation duration change over the time of the experiment? Did it change differently in different participants?
  2. Was response time associated with correctness? Did this association change over the time of the experiment?
  3. Did people tent to answer longer in problems with brackets and did this association change over the time of the experiment?
  4. Was tendency to use peripheral vision associated with response corectness? Did this association change over the time of the experiment?
MIT Licensed

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