Welcome Page

You are being invited to participate in a study titled "Visualization in Motion". This study is conducted by Lijie Yao and Petra Isenberg from Inria (France), Anastasia Bezerianos from LISN (France), and Romain Vuillemot from LIRIS (France).

The purpose of this study is to understand the accurate perception of data in moving charts. This experiment has two sections:

  • a training section
  • an experiment section

Please take part in this study only in case that you do not have problem with moving images on screens and do not have motion sensitivity (vestibular disorder).

The minimum screen size for this study is 13"3-inches. Normally most laptops (except the small Chromebooks, the old small MacBooks, and someother small-screen laptop hybrids) and desktops meet this requirement, however, all smartphones and most tablets will not meet the requirement.

The whole experiment will take you 25 minutes to complete. Please close unnecessary pages and reminders for the following 25 minutes. You will be compensated 3.75 GBP as long as you pass the calibration phase, pass the attention test trials, and complete the study.

Your participation in this study is entirely voluntary and you can withdraw at any time.

Please take part in this experiment only one time, if you have already completed it once, please leave the experiment. We will not pay for the participants who reload the page after finishing the calibration tool, so please do not reload the page during the experiment.

We thank you for your interest in participating in this study.

Please click the button below to proceed to the informed consent:


Before we begin with the experiment we have to learn a little more about your screen. On the next couple of pages we will therefore have to go through a calibration step.

  • Please make your browser window full screen and do not resize it anymore for the duration of the experiment.
  • Please avoid distractions during the experiment for the next 25 minutes.

We are sorry, but you cannot continue the experiment

According to the calibration tool's result, that your screen size is not big enough to do our experiment.

We indicated at the beginning of the experiment that the minimum screen size is 13"3, and if your screen size cannot reach the study request, as we wrote in our consent form, you won't get paid.

You can close the window now and return the task on the Prolific platform.

Thank you for your interest in our online study.


How experienced are you with reading donut charts like in the examples above?

1 2 3 4 5 6 7 8 9 10
Not at all experienced      Very experienced

How often do you watch team sports on TV or play video games (eg. WoW, FIFA...)?

1 2 3 4 5 6 7 8 9 10
Never      Everyday

Background Explanation

Soccer stadium image from TV

Imagine this scenario:
You are sitting in front of your TV watching a soccer match. There are two teams on the court, your home team (in red) and an away team (in grey). The soccer ball is being modified by the TV channel to give additional information about the game: The ball will be surrounded by a small chart that shows for how much time each team had possession of the ball. We call this chart a donut chart.

  • The donut has two slices, the red represents your team and the grey one represents the opponent team. The whole donut represents 100 percent(%) of the current playing time.
  • In the image on the left, your team (in red) had the ball for 60% of the time and the opponent team (in grey) had the ball for 40% of the time already played.

Task Description

Here is an explanation of the types of questions you will have to answer in the study.

What you will see:
  • You will always see a donut chart composed of two slices, one slice is in red, and the other slice in grey. For simplicity, there will be no soccer ball in the middle and no labels around the donut.