top of page

Longitudinal Modeling of Response Process Data

Most likely due to the challenges encountered interpreting time-dependent effects in a way that is familiar to most practitioners, eye tracking studies using longitudinal models remains quite rare. With the use of averaged, summed down or other aggregate versions of the original data, there is always a potential for the actual patterns of change to be obscured, severely limiting the breadth and depth of potential insights into time-varying processes.

We draw from the current developments in the field of educational assessment, supporting the use of item process data, such as eye movements, response times, and brain waves for validation and test development practices, and propose a longitudinal modeling approach, despite its popularity, has not been extended to modeling item-level eye-fixation data.

 

We explore the various ways in which item-level eye-tracking data can be analized to facilitate our understanding of skill development levels of examinees and to identify item characteristics that, if ignored, might undermine the validity of intended person-level inferences.

We will develop and test new and alternative latent growth and growth mixture model applications to estimate multiple-choice item processing curves, and to what extent construct-related, such as a correct response, or construct-unrelated factors, such as a change in the presentation order of the correct choice or brain activity explains some variance.

Below we present some material from our previous and current research projects.

Item process data - Eye tracking technology
BAP Project - Data set 1 - Item 1

The vido below was recorded in our lab (GÜ BAP, 2019-2022), and shows the screen recording of an examinne while processing a multiple-choice test item from a reading comprehension test in English.

Lab_only_PC.png

Test setting 

a) AOIs for coding time-series 

i1.png

b) Heat map

This is a Paragraph. Click on "Edit Text" or double click on the text box to start editing the content and make sure to add any relevant details or information that you want to share with your visitors.

01_HM.png

c) Scan path

01_GP.png

Item process data - Coupling eye movement and EEG data 
120K142 TUBİTAK Project - Data set 2 - Item 1

The vido below was recorded in our lab  (TUBİTAK Project No:120K142, 2021-2024), and shows the screen recording for an examinee while processing a multiple-choice test item form and Emphaty Scale. 

Test setting 

Lab_PC.png

a) AOIs for coding time-series 

AOI.Item3.2.png

b) Heat map

This is a Paragraph. Click on "Edit Text" or double click on the text box to start editing the content and make sure to add any relevant details or information that you want to share with your visitors.

Heatmap - Item3.2_03926.png

c) xxxxx

Heatmap - Item3.2_03926.png

Section Title

Every website has a story, and your visitors want to hear yours. This space is a great opportunity to give a full background on who you are, what your team does and what your site has to offer. Double click on the text box to start editing your content and make sure to add all the relevant details you want site visitors to know.

If you’re a business, talk about how you started and share your professional journey. Explain your core values, your commitment to customers and how you stand out from the crowd. Add a photo, gallery or video for even more engagement.

bottom of page