Welcome to the Experience Sampling Method (ESM) Item Repository!



We are an open science initiative, which aims to support the further development of Expierence Sampling Methodology (ESM) research by creating an open repository of existing ESM items. To achieve this, we established the ESM Item Repository in 2018. The repository portal launched in October 2019 and to date the repository contains 3300+ items, contributed by researchers from 11 different countries, and we have more on the way!



The primary aims of the ESM item repository are to:

  • Provide a source to help researchers find items, learn about their use, and identify relevant items for constructs of interest
  • Support the integration of knowledge about existing items
  • Help researchers identify overlapping items
  • Support the conceptual development and psychometric evaluation of current and new items

 

If you would like to find out more about how to use the ESM Item Repository or contribute items, you can find all the information by navigating through our website.

Blog

How to develop and evaluate ESM items with the ESM-Q



Gudrun Eisele, November 2025

Best Practices for Submitting ESM items: A Step-by-Step Guide



Steffie Schoefs, September 2025

Six Things You Can Do With Your ESM Items (Besides Just Analyzing the Data)


Milla Pihlajamäki, June 2025

ESM Beyond Scales and Checkboxes: A Tool for Coding Open-Ended Data


Anna M. Langener & Marie Stadel, April 2025

Factor Analysis: Overrated, Misused, But Still Useful


Benjamin Kunc, March 2025

The Everyday Measures of Temporal Emotions (EMOTE) database: An open platform to request and deposit ESM data


Imogen Smith, Pete Koval, Elise Kalokerinos, & Daniel Russo-Batterham. February 2025

OUR TEAM

Principal Investigator

Olivia Kirtley

Scientific Team

Olivia Kirtley

Principal Investigator
Scientific Team Lead


I lead the repository team and guide the scientific and conceptual direction of the project. I work on collecting item contributions for the repository, designing user materials for the repository, problem-solving, and output. 

Coding Team

Yoram K. Kunkels

Laura Van Heck

Postdoctoral Scientist
Coding Team Lead 


I am a scientific researcher and programmer at the Central Bureau of Statistics of the Netherlands. From our start at the 2018 ESM Network Meeting, I have worked on front- and backend development and maintenance of the Repository code. I am now leading the coding team.

PhD candidate
Coding Team Member 


Since joining the ESM Item Repository team in 2022, I have worked on data management and programming code for the search portal. I also am streamlining and standardising the submission of new items, to make the process faster and easier for contributors and the information clearer for our users.

Data Team

Steffie Schoefs

Louise Bresseel

Study Coordinator

Data Team Lead 


I am a research coordinator at KU Leuven, and I coordinate the collecting and processing items for inclusion in the ESM Item Repository.

Research Assistant

Data Team Member


I joined the ESM item Repository team in 2025. I am part of the data team, identifying and harvesting ESM items from the literature to be included in the Repository, as well as cleaning and preprocessing these data.


Principal Investigator
Scientific Team Lead


I lead the repository team and guide the scientific and conceptual direction of the project. I work on collecting item contributions for the repository, designing user materials for the repository, problem-solving, and output. 

Gudrun Eisele

Postdoctoral Research Fellow
Scientific Team Co-Lead


I am responsible for overseeing the scientific objectives of the ESM item repository. Together with the team, I conducted a Delphi study with international ESM experts to develop ESM Q, a consensus-based quality assessment tool for ESM items.

Milla Pihlajamäki

Martien Wampers

PhD candidate

Coding Team Member


I joined the ESM item Repository team in 2023. I am part of the coding team and am working on data management and programming code for the search portal.


Data manager


I am a data manager at KU Leuven. I provide database management support for the item submission system.


ALUMNI

Anu Hiekkaranta

Martine van Nierop

Benjamín Šimsa

Johan Le Grange

Tessa Biesemans

Beatriz Diaz

Christina Stefani

Nieke Vermaelen

PhD Candidate


In the ESM Item Repository, I worked on planning and conducting the Delphi study with ESM experts, to develop quality criteria for ESM items. I also assisted with item submissions and communication with contributors. In addition, I worked on graphics and outreach materials.

Admin support


I'm based at KU Leuven, Belgium. I took care of all admin needs in this project and have built this website!

Intern


I was an intern at KU Leuven and I worked on collecting and processing items for inclusion in the repository. I also worked with the coding team to keep the back end of the repository running smoothly.

Intern


I was an intern at KU Leuven and I worked on collecting and processing items for inclusion in the ESM Item Repository.

Research Coordinator


I take care of all admin support and the coordination of the project.

Intern


I was an Erasmus+ intern at the CCP in 2024, and I worked on the Repository Special Collection for ESM items on suicidal and non-suicidal self-injurious thoughts and behaviours.

Intern

Data Team Member


I am a an intern at the CCP and I am assisting the Data Team with harvesting and processing items for the Repository.


Research assistant

Data Team Member


I was part of the data team, identifying and harvesting ESM items from the literature to be included in the Repository, as well as cleaning and preprocessing these data.


Daphne Tuyaerts

Mette Bekius

Davinia Verhoeven

Nian Kemme

Malte Lüken

Wiktor Januszewski

Benjamin Kunc

Research assistant


I was a research assistant at KU Leuven, and I worked on collecting and processing items for inclusion in the ESM Item Repository

Translator


I supported the project by translating incoming questionnaires from multiple languages into English.

Research Assistant


For the Repository I mainly worked on cleaning the data before we upload them into our database, so that search queries will provide researchers with the correct data.

Research assistant


I am a research assistant at KU Leuven, and I work on collecting and processing items for inclusion in the ESM Item Repository

PhD Candidate


I worked with the team on coding solutions.

Intern

Data Team Member


I am a an intern at the CCP and I am assisting the Data Team with harvesting and processing items for the Repository.


PhD candidate

Coding Team Member


I joined the ESM item Repository team in 2023. As a member of the coding team, I am involved in the development and maintenance of the Repository search portal.