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"ACM SIGCHI General Interest Announcements (Mailing List)" <[log in to unmask]>
Christoph Bartneck <[log in to unmask]>
Tue, 14 Oct 2003 14:10:26 +0200
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Christoph Bartneck <[log in to unmask]>
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Call for Papers
Special Issue on Subtle Expressivity for Characters and Robots
of the The international Journal of Human-Computer Studies


This special issue is devoted to theoretical and empirical studies of
subtle expressivity for characters and robots. It is associated with
the workshop on the same theme held at CHI2003 in
Ft. Lauderdale. However, we seeks submissions not only from just the
workshop participants, but from all researchers who have been working
on the topic.

People both consciously and unconsciously use subtle expressions to
indirectly communicate their emotions and intentions through
variations of gaze direction, voice tone and gesture speed. People
also perceive changes in the internal states of others from subtle
changes in their expressivities while interacting with them. Subtle
expressivity plays the supporting part to the leading role of explicit
expressivity, such as contents of speech or category of facial
expressions. However, subtle expressivity plays an important role to
give moderate effects or gently regulate the relationship among the
participants through a continuous interaction.

The human-computer interaction (HCI) research community has come to
recognize life-likeness and personality as important objectives of
software design that seeks to reduce cognitive load. However, we
are far from having coherent understanding of what subtle expressivity
actually is and how products and processes can address it. We might
question whether designing for subtle expressivity will result in
gentle emotional effects on people and whether the processes and
topics involved differ in any significant way from designing for
believability or personality.


We invite for contributions from HCI experts, who have designed,
implemented and evaluated subtle expressivity on interactive media for
giving moderate emotional effects on users through
interaction. Examples include embodied characters, communication
robots and conversational systems.

Relevant topics include:

* Concepts, theories and guidelines: Conceptual contribution for
design of subtle expressions including psychological theory or
software quality models.

 - How to create emotional expressions in the various communication
 - What kind of vocabulary of emotional and conversational expressions
does the character need?
 - What minimal set of subtle expressions is necessary to realize
life-likeness of characters?

* Implementation methods: Case study for software/hardware products
using subtle expressivity.

 - How can technology adapt to user preferences?
 - What types of software architectures are necessary for an emotional
   expressive character?
 - What subtle expressions to software architecture are important in
   designing characters and robots?

* Measuring methods: Evaluation contribution of moderate effects of
subtle expressivity.

 - How can these effects be measured?
 - On what attributes of the interaction between the character and the
user will the expressions have effects?
 - How can subtle expressions enhance empathic interaction?

Prospective authors should keep in mind that the focus of the journal
is on human-computer interaction. Papers describing subtle
expressivity for characters and robots should clearly emphasize this
aspect, and should include the results of an evaluation.


Papers all also expected to conform with the IJHCS guidelines which
are on the Elsevier web site at:
under the "Author Gateway" link.

Send your submission to [log in to unmask]

Submission Deadline: January 31st, 2004
Notification:        March 31st, 2004