Center of Human-Machine-Systems Technische Universität Berlin Franklinstr. 28/29, Sekr. FR2-6 10587 Berlin, Germany email: sascha.mahlke (at) zmms.tu-berlin.de

Currently, I am working as senior user researcher with USEEDS° in Berlin, Germany. USEEDS° provides services for user centered thinking in three areas: Design°, Innovation° and Know-How°.

From 12/07 to 10/08, I was a user researcher with D-LABS in Potsdam, Germany. D-LABS develops innovative and useful concepts for software products and IT-services. Occasionally, I posted about interesting news, ideas and opinions on the D-LABS blog.

I was a PhD student at the Research Trainig Group Prospective Interaction Design from 10/2004 to 11/2007. In my project I worked on theories, methods and empirical studies on users' experience of interaction with interactive products and systems. My supervisors were Prof. Dr. Manfred Thüring, chair of Cognitive Psychology and Cognitive Ergonomics at TU Berlin, and Prof. Dr. Lucienne Blessing, former chair of Engineering Design and Methodology at TU Berlin and now vice-rector for research at the University of Luxembourg. I was sponsored by the German Research Foundation (DFG).

From 11/2006 to 03/2007 I visited the Human Oriented Technology Lab (HOT Lab) at Carleton University in Ottawa, Canada. Prof. Dr. Gitte Lindgaard, Chair of User-Centered Product Design, supported the work on my thesis. My stay was supported by the German Academic Exchange Service.

Before joining the Prospective Interaction Design Group, I worked as a research scientist at the Center for Human-Machine-Systems from 07/2003 to 12/2004 on different industry projects for Volkswagen AG Group Research in the field of driving assistance as project manager (NightVision, Warning strategies and driver fatigue, project director: Prof. Dr. Manfred Thüring). From 11/2002 to 06/2003 I coordinated together with Prof. Dr. Leon Urbas, now chair of Process Control Engineering at TU Dresden, as part of the MoDyS Research Group the development of the project proposal for the Research Trainig Group Prospective Interaction Design. That time I was sponsored by the Technische Universität Berlin.

From 04/1996 to 09/2002 I studied Psychology at the Institute of Psychology and Ergonomics at Technische Universität Berlin. I was as a research student at MoDyS Research Group from 06/2001 to 09/2002 working on task analysis methodology for user modeling and supervised the video analysis laboratory, sponsored by VolkswagenStiftung. I also worked at eye square GmbH from 08/2000 to 01/2002 in the area of usabilty testing and research. Eye square is a Berlin-based, internationally-active market research institute with a focus on usability testings and expert reviews and is a leading provider of eye tracking analysis in market research.

• User Centeret Product Innovation: Research Methods, Ideation, Scoping
• Improving user research methods to support interaction design
• User experience (in cooperation with Anna Pohlmeyer, TU Berlin)

• Innovation and design research
  • Innovation and UCD
  • User-driven innovation
  • Methods & Processes
• Design research
  • Contextual inquiry in software design projects
  • Synthesis of contextual data for design
  • Improving contextual design techniques
• Beyond usability: experience of interaction
  • Quality of product use: non-instrumental qualities (aesthetic and symbolic aspects)
  • Emotional experiences in HCI
  • Psychophysiological methods in interactive contexts
  • User experience and motivation
• Usability Research
  • Grounding usability methods in theory
  • Application of usability approaches in the design of in-vehicle information systems
• User modeling in HCI
  • Modeling interaction to support interaction design
  • Task analysis methodology for user modeling
• Domains
  • Software / web applications
  • Consumer electronic products
  • In-vehicle information systems

Journals

• Mahlke, S., Lemke, I. & Thüring, M. (2007). The diversity of non-instrumental qualities in human-technology interaction. mmi interaktiv, 13, 55-64.
• Thüring, M. & Mahlke, S. (2007). Usability, aesthetics, and emotions in human-technology-interaction. International Journal of Psychology, 42, 253-264.
• Mahlke, S., Rösler, D., Seifert, K., Krems, J.F. & Thüring, M. (2007). Evaluation of six night vision enhancement systems: Qualitative and quantitative support for intelligent image processing. Human Factors, 49, 518-531. [Copyright (2007) by the Human Factors and Ergonomics Society, all rights reserved. Making more than one copy of this paper is prohibited except by written permission of HFES.]

Books and book chapters

• Mahlke, S. & Lemke, I. (2009). Erleben von Interaktion. In G. Spehr (Ed.), SOUND STUDIES. Funktionale Klänge. Berlin: transcript-Verlag (pp.245-260).
• Mahlke, S. & Minge, M. (2008). Consideration of Multiple Components of Emotions in Human-Technology Interaction. In Ch. Peter & R. Beale (Eds.), Affect and Emotion in HCI (LNCS 4868). Berlin: Springer.
• Mahlke, S. (2008). User Experience of Interaction with Technical Systems. Theories, Methods, Empirical Results, and Their Application to the Design of Interactive Systems. Saarbrücken, Germany: VDM Verlag.
• Pataki, K., Schulze-Kissing, D., Mahlke, S. & Thüring, M. (2005). Anwendung von Usability-Maßen zur Nutzeneinschätzung von Fahrerassistenzsystemen. In K. Karrer, B. Gauss, B. & Ch. Steffens (Eds.), Beiträge zur Mensch-Maschine-Systemtechnik aus Forschung und Praxis (pp. 211-228). Düsseldorf: Symposion.

Peer-reviewed conferences

• Mahlke, S. (2008). Learning from Users to Innovate: User Research and Innovation. Proceedings upaEurope2008.
• Mahlke, S. & Lindgaard, G. (2007). Emotional Experiences and Quality Perceptions of Interactive Products. In J. Jacko (Ed.) Human-Computer Interaction, Part I, HCII 2007, LNCS 4550 (pp.164-173). Berlin: Springer.
• Mahlke, S. & Thüring, M. (2007). Studying Antecedents of Emotional Experiences in Interactive Contexts. CHI 2007 Proceedings (pp. 915-918). New York: ACM Press.
• Rösler, D., Krems, J., Mahlke, S., Thüring. & Seifert, K. (2006). Evaluation of night vision enhancement systems: Driver needs and acceptance. In C. Stiller & M. Maurer (Eds.). Fahrerassistenzsysteme (pp. 97-103). Karlsruhe: fmrt Karlsruhe e.V.
• Mahlke, S. (2006). Studying user experience with digital audio players. In R. Harper, M. Rauterberg & M. Combetto (Eds.) Entertainment Computing, ICEC 2006, LNCS 4161 (pp.358-361). Berlin: Springer.
• Mahlke, S. (2006). Aesthetic and Symbolic Qualities as Antecedents of Overall Judgements of Interactive Products. In N. Bryan-Kinns, A. Blanford, P. Cruzon & L. Nigay (Eds.) People and Computers XX - Engage (pp. 57-64). London: Springer.
• Mahlke, S., Minge, M. & Thüring, M. (2006). Measuring multiple components of emotions in interactive contexts. CHI 2006 Extended Abstracts (pp. 1061-1066). New York: ACM Press.
• Mahlke, S. (2005). An integrative model on web user experience. In P. Isaías & M. B. Nunes (Eds.), Proceeding of ICWI2005, Volume II (pp. 91-95). Lisbon, Portugal: IADIS.
• Mahlke, S. (2005). Understanding users' experience of interaction. In N. Marmaras, T. Kontogiannis & D. Nathanael (Eds.), Proceedings of EACE '05 (pp. 243-246). Athens, Greece: National Technical University.
• Mahlke, S. (2002). Factors influencing the experience of website usage. CHI 2002 Extended Abstracts (pp. 846-847). New York: ACM Press.

Other conferences

• Mahlke, S., Weber, K., Pohlmeyer, A. & Minge, M. (2009). Wie wird User Experience in der Praxis gemessen und gestaltet. Usability Professionals 09.
• Mahlke, S. (2007). Qualitätswahrnehmungen und emotionales Erleben bei der Interaktion mit technischen Systemen. In M. Rötting, G. Wozny, A. Klostermann & J. Huss (Eds.), Prospektive Gestaltung von Mensch-Technik-Interaktion, 7. Berliner Werkstatt Mensch-Maschine-Systeme (pp. 245-250). Düsseldorf, Germany: VDI Verlag.
• Lemke, I., Mahlke, S. & Thüring, M. (2007). Beyond usability - Ästhetische und symbolische Aspekte des Nutzererlebens bei interaktiven Produkten. In K. F. Wender, S. Mecklenbräuker, G. D. Rey, T. H. Wehr (Eds.) Beiträge zur 49. Tagung experimentell arbeitender Psychologen (p. 233). Lengerich, Germany: Pabst Science Publishers.
• Mahlke, S. (2006). Emotionen in der Mensch-Technik-Interaktion: Implikationen für zukünftige Anwendungen. In USEWARE 2006: Nutzergerechte Gesteltung technischer Systeme, VDI-Berichte 1946 (pp. 197-206). Düsseldorf: VDI Verlag.
• Mahlke, S. (2006). Studying emotions and non-instrumental qualities as parts of the user experience. In B. Fields, T. Stockman, L. V. Nickerson & P. Healey (Eds.) Proceedings HCI 2006, Volume 2 (pp. 244-246).
• Mahlke, S. (2006). Emotionen als Aspekt des Nutzungserlebens: Implikationen für die Praxis. In T. Bosenick, M. Hassenzahl, M. Müller-Prove & M. Peissner (Eds.) Usability Professionals 06 (pp. 140-145).
• Minge, M., Mahlke, S. & Thüring, M. (2006). Methoden zur Messung emotionaler Aspekte bei der Interaktion mit technischen Systemen. In H. Hecht, G. Meinhardt & S. Berti (Eds.) Experimentelle Psychologie, Beiträge zur 48. Tagung experimentell arbeitender Psychologen. Regensburg, Germany: Roderer.
• Krems, J., Rösler, D., Mahlke, S. & Thüring. (2006). Empirische Bewertung von NightVisionSystemen. In H. Hecht, G. Meinhardt & S. Berti (Eds.) Experimentelle Psychologie, Beiträge zur 48. Tagung experimentell arbeitender Psychologen. Regensburg: Roderer.
• Mahlke, S. (2005). Vom Usability Testing zur Evaluation des Nutzererlebens. In L. Urbas & Ch. Steffens (Eds.), Zustandserkennung und Systemgestaltung, 6. Berliner Werkstatt Mensch-Maschine-Systeme (pp. 251-254). Düsseldorf, Germany: VDI Verlag.
• Mahlke, S. (2002). Einflussgrößen auf das Erleben der Nutzung von Webangeboten. Abstract in M. Baumann, A. Keinath & J. F. Krems (Eds.) Experimentelle Psychologie, Abstracts der 44. Tagung experimentell arbeitender Psychologen (p. 164). Regensburg: Roderer.

Position Papers and Workshop Contributions

• Mahlke, S. (2008). Visual aesthetics and the user experience. Position Paper for the workshop "The Study of Visual Aesthetics in Human-Computer Interaction" at Schloss Dagstuhl (Germany).
• Mahlke, S. (2007). User experience: usability, aesthetics and emotions in human-technology interaction. Position paper for the workshop "UX Maifesto", HCI2007 (Lancaster, GB).
• Mahlke, S. (2007). User experience of driver assistance systems. Position paper for the workshop "Automotive User Interfaces", Mensch & Computer 2007 (Weimar, Germany).
• Bruder, C., Mahlke, S., el Marjani, R., Minge, M. & Wand, A. (2006). Gerätesimulation mit Squeak. Position paper for the workshop "Squeak als Simulationswerkzeug in Forschung und Lehre zur MCI ", Mensch & Computer 2006 (Gelsenkrichen, Germany).
• Mahlke, S. & Minge, M. (2006). Emotions and EMG measures of facial muscles in interactive contexts. Position paper for the workshop "HCI and the Face", CHI2006 (Montreal, Canada).
• Mahlke, S. (2005). Studying affect and emotions as important parts of the user experience. Position paper for the workshop "The role of emotion in Human-Computer Interaction", HCI2005 (Edinburgh, Scotland).

Miscellaneous

• Mahlke, S. (2008). User Experience of Interaction with Technical Systems. On-line version of my dissertation, Berlin University of Technology
• Kindsmüller, M. C. & Mahlke, S. (2007). Editorial: User Experience – Recent approaches to intuitive use and hedonic aspects in human-technology interaction. mmi interaktiv, 13, 1-64.
• Mahlke, S. (2007). Interview with Gitte Lindgaard on visual appeal and aesthetics in human-technology interaction. mmi interaktiv, 13, 96-102.
• Mahlke, S. (2007, March). Usability, aesthetics, emotions and the user experience. HOT Topics, 6 (2).
• Mahlke, S. (2007, March). Interview with Marc Hassenzahl on user experience. HOT Topics, 6 (2).
• Mahlke, S. (2002). Einflussgrößen auf das Erleben von Webangeboten. Technische Universität Berlin. Unpublished Master Thesis.

Talks/Posters

• 04.12.08 - upaEurope2008 (Turin, Italy): Learning from Users to Innovate: User Research and Innovation
• 13.11.08 - World Usabiltiy Day (Berlin, Germany): Nutzerfeedback im Design-Prozess
• 15.07.08 - Schloss Dagstuhl (Wadern, Germany) at workshop The study of visual aesthetics in HCI: Visual aesthetics and the user experience
• 07.02.08 - TU Berlin (Berlin, Germany): User experience of interaction with technical systems (defense of my dissertation)
• 11.10.07 - BWMMS2007 (Berlin, Germany): Qualitätswahrnehmungen und emotionales Erleben bei der Interaktion mit technischen Systemen as part of the symposium on 'User Experience'
• 03.09.07 - M&C 2007 (Weimar, Germany) at workshop Automotive UI: User experience of in-vehicle information systems
• 25.07.07 - HCII2007 (Bejing, China): Emotional Experiences and Quality Perceptions of Interactive Products as part of the symposium on 'Emotions in HCI: Theory, Synthesis and Evaluation'
• 26.06.07 - IDL@FHPotsdam (Potsdam, Germany): Nutzererleben der Interaktion mit technischen Systemen
• 02.05.07 - CHI2007 (San Jose, CA, USA): Studying Antecedents of Emotional Experiences in Interactive Contexts
• 09.03.07 - HOT Lab @ Carleton University (Ottawa, Canada): User Experience with Interactive Systems
• 11.10.06 - Useware2006 (Düsseldorf, Germany): Emotionen in der Mensch-Technik-Interaktion: Implikationen für zukünftige Anwendungen
• 21.09.06 - ICEC2006 (Cambridge, GB): Studying user experience with digital audio players (poster and poster madness)
• 14.09.06 - HCI2006 (London, GB): Aesthetic and hedonic qualities as antecedents of overall judgements of interactive products
• 12.09.06 - HCI2006 (London, GB) at Doctoral Consortium: Studying emotions and non-instrumental qualities as parts of the user experience
• 05.09.06 - Usability Professionals 06 (Gelsenkirchen, Germany): Emotionen als Aspekt des Nutzungserlebens: Implikationen für die Praxis
• 05.09.06 - M&C2006 (Gelsenkirchen, Germany) at workshop Squeak als Simulationswerkzeug in Forschung und Lehre zur MCI: Gerätesimulation mit Squeak (together with Carmen Bruder)
• 29.06.06 - Seminar Datenerhebung in der Medienforschung an der UdK Berlin (Berlin, Germany): Usability Evaluation
• 17.06.06 - Seminar Usability Evaluation an der UdK Berlin (Berlin, Germany): Nutzererleben der Interaktion mit technischen Systemen: Theorien, Methoden und empirische Fragestellungen
• 12.06.06 - prometei Ringvorlesung (Berlin, Germany): Nutzererleben der Interaktion mit technischen Systemen: Theorien, Methoden und erste empirische Ergebnisse
• 24.04.06 - CHI2006 (Montreal, Canada): Measuring multiple components of emotions in interactive contexts (poster)
• 22.04.06 - CHI2006 (Montreal, Canada) at workshop "HCI and the Face": Emotions and EMG measures of facial muscles in interactive contexts
• 09.03.06 - Spring School Center of Human-Machine-Systems (Burg, Germany): Usabilityforschung(together with Krisztin Pataki, Iris Menrath, Michael Schulz & Andreas Wand)
• 14.10.05 - BWMMS2005 (Berlin, Germany): Vom Usability Testing zur Evaluation des Nutzererlebens (poster)
• 29.09.05 - EACE2005 (Chania, Greece): Understanding users' experience of interaction
• 06.09.05 - HCI2005 (Edinburgh, Scotland) at workshop "The role of emotion in Human-Computer Interaction": Studying affect and emotions as important parts of the user experience
• 01.07.05 - Colloquium Center of Human-Machine-Systems (Berlin, Germany): Night vision enhancement systems: Is it enough to see more at night?
• 17.03.05 - Spring School Center of Human-Machine-Systems (Berlin, Germany): Nutzungserleben der Interaktion mit technischen Systemen
• 20.04.02 - CHI2002 (Minneapolis, MS, USA) - Factors influencing the experience of website usage (poster)

Supervised Theses / Mentoring

• Marnie Ann Spiegel (PhD, ongoing)
• Anna Pohlmeyer on User Experience and Elderly Users (PhD, ongoing)
• Iris Lemke on Beyond usability - aesthetic and symbolic aspects of the user experience (Dipl, 2007)
• Andreas Wand on Performed and perceived usability (Dipl, 2006)
• Michael Minge on Methods for studying emotional aspects of the user experience (Dipl, 2005)

Teaching / Mentoring

• BTK Berlin (User-Centered Design Course, Summer 2010)
• Research Training Group prometei @ Berlin University of Technology (Mentoring)
• Center of Excellence "Cognitive Interaction Technology" (CITEC) @ Bielefeld University (Mentoring)

Affiliations

• ACM SIGCHI (ACM's Special Interest Group on Computer-Human Interaction)
• UPA (Usability Professionals' Association)
• GC UPA (Berufsverband der deutschen Usability-Professionals)

Committees

• Reviewer for International Journal of Human-Computer Studies, Behaviour & Information Technology, Journal of Usability Studies, Human Factors, CHI, CSCW, B-HCI, MobileHCI, DUX, IHCI.
• Chairman Friends of the Center of Human-Machine System (Förderkreis des ZMMS)
• Scientific Board Member Center of Human-Machine-Systems, Berlin University of Technology (from 07/05 to 12/07)
• Program Committee Member
  • Workshop on Design principles for software that engages its users (FUN'2007) at INTERACT 2007
  • Interfaces and Human-Computer Interaction 2007 & 2008
  • 7. Berliner Werkstatt Mensch-Maschine-Systeme 2007