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Description

André Calero Valdez is a senior researcher at the Chair for Communication Science and the Human-Computer Interaction Center at the RWTH Aachen University.

He studied computer science at the RWTH-Aachen University with a minor in psychology and has specialized in software engineering. His dissertation aimed at the development and evaluation of a usercentred small screen device for diabetes patients. His dissertation was funded by the RWTH Aachen postgraduate scholarships for students with excellent degrees.

Since 2013 André works as a post-doctoral research at RWTH Aachen University and works at the interface of algorithms and humans in various fields of application. He works in the fields of empirical social research, technology acceptance, eHealth, Industry 4.0, recommender systems, information visualization and social media.

Since 2014 André is a visiting professor at the Medical University Graz in the HCI-KDD Group of Prof. Dr. Andreas Holzinger.

Personal Website

 

Publications

Title	Author(s)
Benchmarking Crisis in Social Media Analytics : A Solution for the Data-Sharing Problem Journal Article (2021)	Assenmacher, Dennis (Corresponding author) Weber, Derek Preuss, Mike Calero Valdez, André Bradshaw, Alison Ross, Björn Cresci, Stefano Trautmann, Heike Neumann, Frank Grimme, Christian
On the Importance of Context: Privacy Perceptions of General vs. Health-specific Data in Health Recommender Systems Contribution to a book, Contribution to a conference proceedings (2020)	Burbach, Laura (Corresponding author) Plettenberg, Nils Belavadi, Poornima (Corresponding author) Nakayama, Johannes (Corresponding author) Halbach, Patrick (Corresponding author) Kojan, Lilian Alrun Undine (Corresponding author) Calero Valdez, André (Corresponding author)
Defend Your Enemy : A Qualitative Study on Defending Political Opponents Against Hate Speech Online Contribution to a book, Contribution to a conference proceedings (2020)	Kojan, Lilian Osmanbeyoglu, Hava Melike Burbach, Laura Ziefle, Martina Calero Valdez, André (Corresponding author)
Investigating Key Factors for Social Network Evolution and Opinion Dynamics in an Agent-Based Simulation Contribution to a book, Contribution to a conference proceedings (2020)	Halbach, Patrick (Corresponding author) Burbach, Laura Belavadi, Poornima Nakayama, Johannes Plettenberg, Nils Ziefle, Martina Calero Valdez, André
Netlogo vs. Julia : Evaluating Different Options for the Simulation of Opinion Dynamics Contribution to a book, Contribution to a conference proceedings (2020)	Burbach, Laura (Corresponding author) Belavadi, Poornima Halbach, Patrick Kojan, Lilian Alrun Undine Plettenberg, Nils Nakayama, Johannes Ziefle, Martina Calero Valdez, André
Filter Bubbles and Content Diversity? An Agent-Based Modeling Approach Contribution to a book, Contribution to a conference proceedings (2020)	Belavadi, Poornima (Corresponding author) Burbach, Laura (Corresponding author) Halbach, Patrick (Corresponding author) Nakayama, Johannes (Corresponding author) Plettenberg, Nils (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, André (Corresponding author)
User Behavior and Awareness of Filter Bubbles in Social Media Contribution to a book, Contribution to a conference proceedings (2020)	Plettenberg, Nils (Corresponding author) Nakayama, Johannes Belavadi, Poornima Halbach, Patrick Burbach, Laura Calero Valdez, André Ziefle, Martina
Opinion Formation on the Internet : The Influence of Personality, Network Structure, and Content on Sharing Messages Online Contribution to a book, Journal Article (2020)	Burbach, Laura (Corresponding author) Halbach, Patrick Ziefle, Martina Calero Valdez, André
Predicting Acceptance of Novel Technology from Social Network Data - An Agent-based Simulation-Approach Contribution to a book, Contribution to a conference proceedings (2019)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
Computational Methods in Professional Communication Contribution to a book, Contribution to a conference proceedings (2019)	Calero Valdez, André (Corresponding author) Adam, Lena (Corresponding author) Assenmacher, Dennis (Corresponding author) Burbach, Laura (Corresponding author) Bonart, Malte (Corresponding author) Frischlich, Lena (Corresponding author) Schar, Philipp (Corresponding author)
Evaluating Different Strategies to Restore Trust in Decision Support Systems in Cross-Company Cooperation Contribution to a book, Contribution to a conference proceedings (2018)	Philipsen, Ralf (Corresponding author) Brauner, Philipp Calero Valdez, André Ziefle, Martina
Industry 4.0 and its Future Staff : Matching Millennials' Perceptions of a Perfect Job with the Requirements of Digitalization Contribution to a book, Contribution to a conference proceedings (2019)	Schaar, Anne Kathrin (Corresponding author) Calero Valdez, André (Corresponding author) Hamann, Tatjana Ziefle, Martina (Corresponding author)
Studying the Acceptance of a Digital Diabetes Diaries Contribution to a book, Contribution to a conference proceedings (2019)	Calero Valdez, André (Corresponding author) Ziefle, Martina
Bubble Trouble: Strategies Against Filter Bubbles in Online Social Networks Contribution to a book, Contribution to a conference proceedings (2019)	Burbach, Laura (Corresponding author) Halbach, Patrick Ziefle, Martina Calero Valdez, André
"Attitude” - mHealth Apps and Users’ Insights : An Empirical Approach to Understand the Antecedents of Attitudes towards mHealth Applications Contribution to a book, Contribution to a conference proceedings (2019)	Vervier, Luisa (Corresponding author) Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
“In Clarity We Trust!” : An Empirical Study of Factors that Affect the Credibility of Health-Related Information on Websites Contribution to a book, Contribution to a conference proceedings (2019)	Vervier, Luisa (Corresponding author) Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
Trust in Cyber Security Recommendations Contribution to a book, Contribution to a conference proceedings (2019)	Nakayama, Johannes (Corresponding author) Plettenberg, Nils (Corresponding author) Halbach, Patrick (Corresponding author) Burbach, Laura (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, Andre (Corresponding author)
Follow Me: The Impact of Opinion Majorities in Social Networks and the Role of Digital Maturity Contribution to a book, Contribution to a conference proceedings (2019)	Halbach, Patrick (Corresponding author) Burbach, Laura Ziefle, Martina Calero Valdez, André
Would I Lie to You? : How Users Evaluate Faked Online Content Depending on Its Publication Type Contribution to a book, Contribution to a conference proceedings (2019)	Halbach, Patrick (Corresponding author) Burbach, Laura (Corresponding author) Nakayama, Johannes (Corresponding author) Plettenberg, Nils (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, André (Corresponding author)
'Hey, Siri', 'Ok, Google', 'Alexa' : Acceptance-Relevant Factors of Virtual Voice-Assistants Contribution to a book, Contribution to a conference proceedings (2019)	Burbach, Laura (Corresponding author) Halbach, Patrick (Corresponding author) Plettenberg, Nils (Corresponding author) Nakayama, Johannes (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, André (Corresponding author)
Who Shares Fake News in Online Social Networks? An agent-based model of different personality models and behaviors in social networks Contribution to a book, Contribution to a conference proceedings (2019)	Burbach, Laura (Corresponding author) Halbach, Patrick (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, André (Corresponding author)
What happens when decision support systems fail? : the importance of usability on performance in erroneous systems Journal Article (2019)	Brauner, Philipp (Corresponding author) Philipsen, Ralf Calero Valdez, André Ziefle, Martina
Believability of News : Understanding Users Perceptions of Fake News and the Effectiveness of Fact-Checking Badges Contribution to a book, Contribution to a conference proceedings (2018)	Calero Valdez, André (Corresponding author) Ziefle, Martina
Human Interaction Under Risk in Cyber-Physical Production Systems Contribution to a book, Contribution to a conference proceedings (2019)	Brauner, Philipp (Corresponding author) Philipsen, Ralf Calero Valdez, André Ziefle, Martina
The users’ perspective on the privacy-utility trade-offs in health recommender systems Contribution to a book, Journal Article (2018)	Calero Valdez, André (Corresponding author) Ziefle, Martina
Requirements for Reproducibility of Research in Situational and Spatio-Temporal Visualization : Position Paper Contribution to a book, Contribution to a conference proceedings (2018)	Calero Valdez, André (Corresponding author) Schaar, Anne Kathrin Hildebrandt, Julian Romeo Ziefle, Martina
Studying Biases in Visualization Research: Framework and Methods Contribution to a book (2018)	Calero Valdez, André (Corresponding author) Ziefle, Martina Sedlmair, Michael
You Spin my Head Right Round: Threshold of Limited Immersion for Rotation Gains in Redirected Walking Journal Article (2018)	Schmitz, Patric Hildebrandt, Julian Romeo (Corresponding author) Calero Valdez, André Kobbelt, Leif Ziefle, Martina
Priming and Anchoring Effects in Visualization Journal Article (2017)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author) Sedlmair, Michael (Corresponding author)
Decisions About Medical Data Disclosure in the Internet: An Age Perspective Contribution to a book, Contribution to a conference proceedings (2018)	Ziefle, Martina (Corresponding author) Calero Valdez, André
“Should I Trust or Should I Go?” or What Makes Health-Related Websites Appear Trustworthy? - An Empirical Approach of Perceived Credibility of Digital Health Information and the Impact of User Diversity Contribution to a book, Contribution to a conference proceedings (2018)	Vervier, Luisa (Corresponding author) Calero Valdez, André Ziefle, Martina
Get Well Soon! Human Factors’ Influence on Cybersickness After Redirected Walking Exposure in Virtual Reality Contribution to a book, Contribution to a conference proceedings (2018)	Hildebrandt, Julian (Corresponding author) Schmitz, Patric Calero Valdez, André Kobbelt, Leif Ziefle, Martina
Political Opinions of Us and Them and the Influence of Digital Media Usage Contribution to a book, Contribution to a conference proceedings (2018)	Calero Valdez, André (Corresponding author) Burbach, Laura Ziefle, Martina
Human Factors in the Age of Algorithms. Understanding the Human-in-the-loop Using Agent-Based Modeling Contribution to a book, Contribution to a conference proceedings (2018)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
Acceptance of a Digital Paper-based Diabetes Diary - Understanding Precursors of Acceptance of Digitally Assisted Diabetes Care Contribution to a book, Contribution to a conference proceedings (2018)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
User Preferences in Recommendation Algorithms: The influence of user diversity, trust, and product category on privacy perceptions in recommender algorithms Contribution to a book, Contribution to a conference proceedings (2018)	Burbach, Laura (Corresponding author) Nakayama, Johannes (Corresponding author) Plettenberg, Nils (Corresponding author) Ziefle, Martina (Corresponding author) Calero Valdez, André (Corresponding author)
The Interaction of Causal Attribution of Performance and Compliance with Decision Support Systems in Cyber-Physical Production Systems - An Empirical Study Using a Business Simulation Game Contribution to a book, Contribution to a conference proceedings (2017)	Brauner, Philipp (Corresponding author) Philipsen, Ralf Calero Valdez, André Ziefle, Martina
Interdisciplinary Cooperation Management in Research Clusters: A Review of Twelve Years Contribution to a book, Contribution to a conference proceedings (2018)	Müller-Abdelrazeq, Sarah Luisa Brauner, Philipp Calero Valdez, André Jansen, Ulrich Platte, Laura Schaar, Anne-Kathrin Steuer-Dankert, Linda Zachow, Sebastian Schönefeld, Kathrin Haberstroh, Max Leicht-Scholten, Carmen Ziefle, Martina Isenhardt, Ingrid
Elitism, trust, opinion leadership and politics in social protests in Germany Contribution to a book, Journal Article (2018)	Calero Valdez, André (Corresponding author) Kluge, Johanna Ziefle, Martina
Akzeptanz autonomer Robotik : Einsatz in Industrie, Büro und Pflege : Studentische Arbeiten SS16 Book (2018)	Calero Valdez, André (Editor)
The diversity of why: a meta-analytical study of usage motivation in enterprise social networks Contribution to a book, Journal Article (2017)	Calero Valdez, André (Corresponding author) Brell, Juliana Schaar, Anne Kathrin Ziefle, Martina
Second Workshop on Health Recommender Systems (HealthRecSys 2017) Contribution to a book, Contribution to a conference proceedings (2017)	Elsweiler, David (Corresponding author) Hors-Fraile, Santiago (Corresponding author) Ludwig, Bernd (Corresponding author) Said, Alan (Corresponding author) Schäfer, Hanna (Corresponding author) Trattner, Christoph (Corresponding author) Torkamaan, Helma (Corresponding author) Calero Valdez, André (Corresponding author)
Domestic Robots for Homecare: A Technology Acceptance Perspective Contribution to a book, Contribution to a conference proceedings (2017)	Ziefle, Martina (Corresponding author) Calero Valdez, André
‘Industrie 4.0’ and an Aging Workforce : A Discussion from a Psychological and a Managerial Perspective Contribution to a book, Contribution to a conference proceedings (2017)	Schinner, Matthias Calero Valdez, André (Corresponding author) Noll, Elisabeth Schaar, Anne Kathrin Letmathe, Peter Ziefle, Martina
Measuring Insight into Multi-dimensional Data from a Combination of a Scatterplot Matrix and a HyperSlice Visualization Contribution to a book, Contribution to a conference proceedings (2017)	Calero Valdez, André (Corresponding author) Gebhardt, Sascha Kuhlen, Torsten Ziefle, Martina
How Correct and Defect Decision Support Systems Influence Trust, Compliance, and Performance in Supply Chain and Quality Management : A Behavioral Study Using Business Simulation Games Contribution to a book, Contribution to a conference proceedings (2017)	Brauner, Philipp (Corresponding author) Calero Valdez, André Philipsen, Ralf Ziefle, Martina
User Groups and Different Levels of Control in Recommender Systems Contribution to a book, Contribution to a conference proceedings (2017)	Mendez, Christine Lukarov, Vlatko Greven, Christoph (Corresponding author) Calero Valdez, André (Corresponding author) Dietze, Felix Schroeder, Ulrik Ziefle, Martina
That’s so Meta! Usability of a Hypergraph-Based Discussion Model Contribution to a book, Contribution to a conference proceedings (2017)	Dietze, Felix Calero Valdez, André (Corresponding author) Karoff, Johannes Greven, Christoph Schroeder, Ulrik Ziefle, Martina
Augmenting research cooperation in production engineering with data analytics Journal Article (2017)	Thiele, Thomas David (Corresponding author) Calero Valdez, André Stiehm, Sebastian Richert, Anja Simone Ziefle, Martina Jeschke, Sabina
Scientific Cooperation Engineering Contribution to a book (2017)	Jeschke, Sabina (Corresponding author) Bleck, Wolfgang Richert, Anja Simone Schuh, Günther Schulz, Wolfgang Ziefle, Martina Bräkle, André Calero Valdez, André Dahmen, Kirsten Jansen, Ulrich Jooß, Claudia Müller-Abdelrazeq, Sarah Luisa Prahl, Ulrich Schaar, Anne Kathrin Sharma, Mamta Thiele, Thomas David
Recommender Systems for Health Informatics: State-of-the-Art and Future Perspectives Contribution to a book (2016)	Calero Valdez, André (Corresponding author) Ziefle, Martina Verbert, Katrien Felfernig, Alexander Holzinger, Andreas
Defective Still Deflective - How Correctness of Decision Support Systems Influences User’s Performance in Production Environments Contribution to a book, Contribution to a conference proceedings (2016)	Brauner, Philipp (Corresponding author) Calero Valdez, André Philipsen, Ralf Ziefle, Martina
Gender Differences in Usage Motivation for Social Networks at Work Contribution to a book, Contribution to a conference proceedings (2016)	Brell, Juliana Calero Valdez, André (Corresponding author) Schaar, Anne Kathrin Ziefle, Martina
Strategic Knowledge Management for Interdisciplinary Teams - Overcoming Barriers of Interdisciplinary Work Via an Online Portal Approach Contribution to a book, Contribution to a conference proceedings (2016)	Hamann, Tatjana Schaar, Anne Kathrin Calero Valdez, André (Corresponding author) Ziefle, Martina
An Open-Source Object-Graph-Mapping Framework for Neo4j and Scala: Renesca Contribution to a book, Contribution to a conference proceedings (2016)	Dietze, Felix Karoff, Johannes Calero Valdez, André (Corresponding author) Ziefle, Martina Greven, Christoph Schroeder, Ulrik
Human Factors in Information Visualization and Decision Support Systems Contribution to a conference proceedings (2016)	Calero Valdez, André Brauner, Philipp Ziefle, Martina Kuhlen, Torsten Sedlmair, Michael
On Studying Human Factors in Complex Cyber-Physical Systems Contribution to a conference proceedings (2016)	Brauner, Philipp (Corresponding author) Calero Valdez, André (Corresponding author) Philipsen, Ralf (Corresponding author) Ziefle, Martina (Corresponding author)
Trustworthiness of visualizations of mobility-induced CO2 emissions Contribution to a conference proceedings (2016)	Platte, Laura (Corresponding author) Freitag, Svenja Schubert, Lisa Molis, Jerg Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
Graph Complexity in visual recommender systems for scientific literature Contribution to a conference proceedings (2016)	Abels, Stephan (Corresponding author) Greven, Christoph Calero Valdez, André (Corresponding author) Schroeder, Ulrik Ziefle, Martina (Corresponding author)
Towards Interactive Recommender Systems with the Doctor-in-the-Loop Contribution to a conference proceedings (2016)	Holzinger, Andreas (Corresponding author) Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
HCI for Recommender Systems : the Past, the Present and the Future Contribution to a book, Contribution to a conference proceedings (2016)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author) Verbert, Katrien
Using Liferay as an Interdisciplinary Scientific Collaboration Portal. A Comparative Usability Study of version 6.1 and 6.2 Contribution to a book, Contribution to a conference proceedings (2016)	Calero Valdez, André (Corresponding author) Bräkling, André Schaar, Anne Kathrin (Corresponding author) Schuh, Günther Ziefle, Martina (Corresponding author)
Preparing production systems for the Internet of Things : The potential of socio-technical approaches in dealing with complexity Contribution to a conference proceedings (2016)	Calero Valdez, André Brauner, Philipp Ziefle, Martina (Corresponding author)
Social Media Applications for Knowledge Exchange in Organizations Contribution to a book (2016)	Calero Valdez, André (Corresponding author) Schaar, Anne Kathrin Bender, Jens Aghassi, Susanne Schuh, Günther Ziefle, Martina
User-centered Design of Business Communities. The Influence of Diversity Factors on Motives to use Communities in Professional Settings Contribution to a book, Contribution to a conference proceedings, Journal Article (2015)	Schaar, Anne Kathrin (Corresponding author) Calero Valdez, André Ziefle, Martina
Orchestrating collaboration - Using visual collaboration suggestion for steering of research clusters Contribution to a book, Contribution to a conference proceedings, Journal Article (2015)	Calero Valdez, André (Corresponding author) Özdemir, Denis Yazdi, Mohammed Amin Schaar, Anne Kathrin (Corresponding author) Ziefle, Martina (Corresponding author)
Reducing Complexity with Simplicity : Usability Methods for Industry 4.0 Contribution to a conference proceedings (2015)	Calero Valdez, André Brauner, Philipp Schaar, Anne Kathrin Holzinger, Andreas Ziefle, Martina
Older Users’ Rejection of Mobile Health Apps a Case for a Stand-Alone Device? Contribution to a book, Contribution to a conference proceedings (2015)	Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
What Should I Read Next? : a Personalized Visual Publication Recommender System Contribution to a book, Contribution to a conference proceedings (2015)	Bruns, Simon (Corresponding author) Calero Valdez, André (Corresponding author) Greven, Christoph (Corresponding author) Ziefle, Martina (Corresponding author) Schroeder, Ulrik (Corresponding author)
What Do My Colleagues Know? : Dealing with Cognitive Complexity in Organizations Through Visualizations Contribution to a book, Contribution to a conference proceedings (2015)	Calero Valdez, André (Corresponding author) Bruns, Simon (Corresponding author) Greven, Christoph (Corresponding author) Schroeder, Ulrik (Corresponding author) Ziefle, Martina (Corresponding author)
Nutzungsmotivation von sozialen Netzwerken im Arbeitskontext Contribution to a book (2015)	Schaar, Anne Kathrin (Corresponding author) Calero Valdez, André (Corresponding author) Ziefle, Martina (Corresponding author)
Unterstützung interdisziplinärer Integration am Beispiel einer Exzellenzcluster-Community Contribution to a book (2015)	Thiele, Thomas David (Corresponding author) Schröder, Stefan Calero Valdez, André Jooß, Claudia Richert, Anja Ziefle, Martina Isenhardt, Ingrid Jeschke, Sabina
Konzeption einer Community-Plattform Contribution to a book (2015)	Siegers, Jan (Corresponding author) Bender, Jens (Corresponding author) Calero Valdez, André (Corresponding author) Löcker, Ann-Kathrin (Corresponding author) Schaar, Anne Kathrin (Corresponding author)
Evaluierung, Optimierung und Validierung Contribution to a book (2015)	Calero Valdez, André (Corresponding author) Löcker, Ann-Kathrin (Corresponding author) Schaar, Anne Kathrin (Corresponding author)
Analyse der potenzieller Nutzer Contribution to a book (2015)	Calero Valdez, André (Corresponding author) Löcker, Ann-Kathrin (Corresponding author) Schaar, Anne Kathrin (Corresponding author)
Scientific Cooperation Engineering in the Cluster of Excellence Integrative Production Technology for High-Wage Countries at RWTH Aachen University Contribution to a book (2014)	Jooß, Claudia (Corresponding author) Welter, Florian Leisten, Ingo Richert, Anja Simone Schaar, Anne Kathrin Calero Valdez, André Nick, Eva-Maria Prahl, Ulrich Jansen, Ulrich Schulz, Wolfgang Ziefle, Martina Jeschke, Sabina
Technology acceptance and diabetes : user centered design of small screen devices for diabetes patients Dissertation / PhD Thesis (2014)	Calero Valdez, André
Scientific Cooperation Engineering Making Interdisciplinary Knowledge Available within Research Facilities and to External Stakeholders Contribution to a conference proceedings (2014)	Calero Valdez, André Schaar, Anne Kathrin Vaegs, Tobias Thiele, Thomas David Kowalski, Thomas Aghassi, Susanne Jansen, Ulrich Schulz, Wolfgang Schuh, Günther Jeschke, Sabina Ziefle, Martina
Enhancing Interdisciplinary Cooperation by Social Platforms Contribution to a book, Contribution to a conference proceedings (2014)	Calero Valdez, André Schaar, Anne Kathrin Ziefle, Martina Holzinger, Andreas
Motivational features of a mobile web application promoting a healthy lifestyle Contribution to a conference proceedings (2010)	Holzinger, Andreas Dorner, Stefan Födinger, M. Ziefle, Martina Calero Valdez, André