To do or not to do: Differences in user experience and retrospective judgments depending on the presence or absence of instrumental goals. - Marc Hassenzahl; Daniel Ullrich (Interact. Comput., 2007)

Erleben. Gestalten. Die Usability Professionals 09 in Berlin. - Marc Hassenzahl; Henning Brau; Sarah Diefenbach; Kirstin Kohler; Franz Koller; Matthias Peissner; Kostanija Petrovic; Meinald T. Thielsch; Daniel Ullrich; Dirk Zimmermann (i-com, 2009)

Branchenreport Usability 2010. - Sarah Diefenbach; Daniel Ullrich (UP, 2010)

INTUI. Exploring the Facets of Intuitive Interaction. - Daniel Ullrich; Sarah Diefenbach (MuC, 2010)

From magical experience to effortlessness: an exploration of the components of intuitive interaction. - Daniel Ullrich; Sarah Diefenbach (NordiCHI, 2010)

Fünf Jahre Usability Professionals Forum. - Sarah Diefenbach; Marc Hassenzahl; Daniel Ullrich; Matthias C. Schroeder (i-com, 2010)

Erwartungshaltung versus Usability: Der Effekt von negativer Erwartungshaltung auf die Akzeptanz von Software-Systemen. - Roman Szymanski; Daniel Ullrich (UP, 2011)

Branchenreport Usability 2011. - Daniel Ullrich; Sarah Diefenbach (UP, 2011)

Erlebnis intuitive Interaktion - ein phänomenlogischer Ansatz. - Daniel Ullrich; Sarah Diefenbach (i-com, 2011)

Branchenreport Usability 2012. - Daniel Ullrich; Nina Kolb; Sarah Diefenbach (UP, 2012)

Automatisierte nichtinvasive Emotionsmessung. Ein Erfahrungsbericht von der Vision bis zur Realisierung. - Paul Gerber; Daniel Ullrich (i-com, 2012)

Branchenreport UX/Usability 2013. - Sarah Diefenbach; Nina Kolb; Daniel Ullrich (UP, 2013)

Komponenten und Einflussfaktoren der intuitiven Interaktion: Ein integratives Modell. - Daniel Ullrich (i-com, 2013)

Branchenreport UX/Usability 2014. - Sarah Diefenbach; Daniel Ullrich (UP, 2014)

Berichte aus der Usability/UX Branche: Ausbildungswege, Arbeitsfeld und aktuelle Diskussionen. - Nina Kolb; Sarah Diefenbach; Daniel Ullrich (i-com, 2014)

Branchenreport UX/Usability 2015. - Sarah Diefenbach; Stefan Tretter; Daniel Ullrich; Nina Kolb (UP, 2015)

Die Intuitivitäts-Illusion: Intuitives Nutzererleben durch Attributionsfehler. - Stefan Tretter; Daniel Ullrich; Sarah Diefenbach (MuC, 2015)

An Experience Perspective on Intuitive Interaction: Central Components and the Special Effect of Domain Transfer Distance. - Sarah Diefenbach; Daniel Ullrich (Interact. Comput., 2015)

Murphy Miserable Robot: A Companion to Support Children's Well-being in Emotionally Difficult Situations. - Daniel Ullrich; Sarah Diefenbach; Andreas Butz (CHI Extended Abstracts, 2016)

Branchenreport UX/Usability 2016 - Ergebnisse der jährlichen Befragung unter UX/Usability Professionals in Deutschland. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Kolb (UP, 2016)

Social Robots for the 21st Century. - Daniel Ullrich; Andreas Butz (Computer, 2016)

Technology for Behavior Change - Potential, Challenges, and Ethical Questions. - Sarah Diefenbach; Andreas Kapsner; Matthias Laschke; Jasmin Niess; Daniel Ullrich (i-com, 2016)

Truly Social Robots - Understanding Human-Robot Interaction from the Perspective of Social Psychology. - Daniel Ullrich; Sarah Diefenbach (VISIGRAPP (2: HUCAPP), 2017)

More than Just Human: The Psychology of Social Robots. - Daniel Ullrich; Sarah Diefenbach (VISIGRAPP (Revised Selected Papers), 2017)

(Dis)Respectful Technologies: Wie Technik soziale Normen im Arbeits- und Privatleben aushebelt - und was sich dagegen tun lässt. - Sarah Diefenbach; Daniel Ullrich; Manuela Kronseder; Mariella T. Stockkamp; Miriam Weber (UP, 2017)

Branchenreport UX/Usability 2017. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2017)

Robot Personality Insights. Designing Suitable Robot Personalities for Different Domains. - Daniel Ullrich (i-com, 2017)

Empowerment in HCI - A Survey and Framework. - Hanna Schneider; Malin Eiband; Daniel Ullrich; Andreas Butz (CHI, 2018)

Who do you follow?: Social Robots' Impact on Human Judgment. - Daniel Ullrich; Andreas Butz; Sarah Diefenbach (HRI (Companion), 2018)

Paradoxe Effekte von Gamification: Spielerisch vorbei am Ziel. - Sarah Diefenbach; Daniel Ullrich (UP, 2018)

Branchenreport UX/Usability 2018. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2018)

Minimal Design, Maximum Confusion - Wie das Minimal Design Dogma die Usability aushebelt. - Daniel Ullrich; Sarah Diefenbach (UP, 2018)

Die Roboterpersönlichkeit - Konzeption, Gestaltung und Evaluation der Persönlichkeit von sozialen Technologien. - Lara Christoforakos; Sarah Diefenbach; Daniel Ullrich; Marietta Herzog (UP, 2019)

Branchenreport UX/Usability 2019. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2019)

Robotervertrauen: Eine Exploration vertrauensförderlicher Attribute der Robotergestaltung mittels Clusteranalyse. - Daniel Ullrich; Sarah Diefenbach; Lara Christoforakos; Tinatini Surmava; Cedric Quintes (MuC (Workshopband), 2019)

OMG I'm Laughing so Hard - Alienation in Digital Communication and Potential Countermeasures. - Cedric Quintes; Daniel Ullrich (i-com, 2019)

Branchenreport UX/Usability 2020. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich (UP, 2020)

The Eternal Robot: Anchoring Effects in Humans' Mental Models of Robots and Their Self. - Daniel Ullrich; Andreas Butz; Sarah Diefenbach (Frontiers Robotics AI, 2020)

Branchenreport UX/Usability 2021. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2021)

Can Robots Earn Our Trust the Same Way Humans Do? A Systematic Exploration of Competence, Warmth, and Anthropomorphism as Determinants of Trust Development in HRI. - Lara Christoforakos; Alessio Gallucci; Tinatini Surmava; Daniel Ullrich; Sarah Diefenbach (Frontiers Robotics AI, 2021)

The Development of Overtrust: An Empirical Simulation and Psychological Analysis in the Context of Human-Robot Interaction. - Daniel Ullrich; Andreas Butz; Sarah Diefenbach (Frontiers Robotics AI, 2021)

Branchenreport UX/Usability 2022. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2022)

Invisible but Understandable: In Search of the Sweet Spot between Technology Invisibility and Transparency in Smart Spaces and Beyond. - Sarah Diefenbach; Lara Christoforakos; Daniel Ullrich; Andreas Butz (Multimodal Technol. Interact., 2022)

Social Robot Personality: A Review and Research Agenda. - Sarah Diefenbach; Marietta Herzog; Daniel Ullrich; Lara Christoforakos (Emotional Machines, 2023)

Designing for Technology Transparency - Transparency Cues and User Experience. - Ilka Hein; Sarah Diefenbach; Daniel Ullrich (UP, 2023)

Branchenreport UX/Usability 2023 - Ergebnisse der jährlichen Befragung unter UX/Usability Professionals in Deutschland. - Stefan Tretter; Sarah Diefenbach; Daniel Ullrich; Nina Gerber (UP, 2023)

Designing Dynamic Robot Characters to Improve Robot-Human Communications. - Carl Oechsner; Daniel Ullrich (CoRR, 2023)

The Fernstudent. A User-Centered Design Case Study on Improvements of Hybrid Teaching Through A Physical Avatar in the Classroom. - Daniel Ullrich; Andreas Martin Butz; Sarah Diefenbach (CHI Extended Abstracts, 2024)

Actual Versus Attributed Consciousness: Studying AI From a User Perspective. - Ilka Hein; Daniel Ullrich; Sarah Diefenbach (MuC (Workshopband), 2024)

Creating Subtle Transparency in Smart Spaces: Visual Cues to Communicate Attention and Intention of Assistive Systems. - Ilka Hein; Daniel Ullrich; Sarah Diefenbach (NordiCHI (Adjunct), 2024)

Where the Wild Things Are - A Trip to the Pervasive Multiverse and Its Inhabitants. - Andreas Butz; Carl Oechsner; Svenja Schött; Daniel Ullrich; Sarah Diefenbach; Sidney Fels (IEEE Pervasive Comput., 2024)

Responsible Automation: Exploring Potentials and Losses through Automation in Human-Computer Interaction from a Psychological Perspective. - Sarah Diefenbach; Daniel Ullrich; Tim Lindermayer; Kaja-Lena Isaksen (Inf., 2024)