TEDx and other upcoming invited lectures, exhibitions & new publications.

University of Cambridge, Centre for Research in the Arts, Social Sciences and Humanities. The skillful body and affordances for material mimesis. December 17-18, 2015.

Bi-City Biennale of Architecture/Urbanism Shenzhen and Hong Kong’s Aformal Academy, December 6, 2015.

Keynote at Society for Phenomenological Philosophy, Amsterdam, Nov. 7th, 2015.

Exhibition on RAAAF’s work.French Architecture Instititute. Platform for artistic creation, Cité de l’architecture, Paris. Opening and debate with TVK, 22/10/2015.

University of Cincinnati, The Rich Landscape of Affordances. Workshop title: ‘Affordances and brain-body-environment-systems‘, October 8, 2015. With a.o. Randall Beer, Tony Chemero and Harry Heft.

Chicago Architecture Biennial, Exhibition with RAAAF. October 1, 2015-January 3, 2016.

Radboud University, Neurophilosophy, August 12, 2015.

TEDxGhent talk. Situating the Embodied Mind in a Landscape of Standing Affordances. June 13, 2015. (You can read the article version of it here TEDxGhent paper.)

Van Abbe Museum talk. Disability & Skilled Intentionality. June 1, 2015. (in Dutch)

Stockholm Business School, Symposium on Innovation, Embodiment & Sociomateriality. The Skilled Intentionality Framework for Innovation in Context. May 22-23, 2015.

Society of Arts, Royal Netherlands Academy of Arts & Sciences (KNAW)/Looiersgracht 60. The End of Sitting 1:1 – A Projection. March 23, 2015. (in Dutch).

KNAW Society of Arts on The End of Sitting: Towards a Landscape of Standing Affordances

On March 23 2015, the Society of Arts of the Royal Dutch Academy of Arts & Science (KNAW) organized a night around Barbara Visser’s movie on our joint project The End of Sitting in collaboration with Looiersgracht 60. The title of her movie is The End of Siting 1:1 – A projection. This movie uses the audio recordings of two expert meetings I organized last November in Amsterdam to discuss this new enactive art installation.


The move is now available online here:


New Enactive Art Installation: The End of Sitting

The End of Sitting is a large spatial installation at the crossroads of visual art, architecture, philosophy and empirical science.

The End of Sitting. Photo: Frederica Rijkenberg

In our society almost the entirety of our surroundings have been designed for sitting, while evidence from medical research suggests that too much sitting has adverse health effects. RAAAF [Rietveld Architecture-Art Affordances] and visual artist Barbara Visser have developed a concept wherein the chair and desk are no longer unquestionable starting points. Instead, the installation’s various affordances solicit visitors to explore different standing positions in an experimental work landscape.

RAAAF-Rietveld-Architecture-Art-Affordances-The-End-of-Sitting-000956image RAAAF-Rietveld-Architecture-Art-Affordances-The-End-of-Sitting-000957image

The End of Sitting marks the beginning of an experimental trial phase, exploring the possibilities of radical change for the working environment. This project is a spatial follow-up of the recently released mute animation ‘Sitting Kills‘ by RAAAF | Barbara Visser, developed as a vision on the workspace of 2025, commissioned by the Chief Government Architect of the Netherlands. Moreover, the art installation is the visual component of Erik Rietveld’s philosophical research project titled ‘The Landscape of Affordances: Situating the Embodied Mind’; the installation visualizes the  philosophical notion of a Landscape of (Standing) Affordances. You can find a link to the philosophical paper on the landscape of affordances in this earlier post.RAAAF-Rietveld-Architecture-Art-Affordances-The-End-of-Sitting-000958image

The End of Sitting is a collaboration with Looiersgracht 60, a new space for art and science in Amsterdam. Gibsonian ecologicla psychologist Dr. Rob Withagen of the University of Groningen (Center for Human Movement Sciences / University Medical Center) has studied 1) how people use the landscape of standing affordances and 2) how the amount of movement and 3) productivity compare to working in a traditional open office setting. The experiment on the rock of standing affordances has been recorded with 4 camera’s. The subjects’ use of standing affordances and data on productivity are currently being analyzed by Dr. Withagen. They expect to publish the findings on affordance use and productivity next spring.

You can find an overview of the attention this project attracted in the international media here and a summary of RAAAF’s research for the End of Sitting below:

10007071_611178232341127_6202838570440143848_nPhotos: Maarten Kools (Vrij Nederland), Jan Kempenaers (other color photo’s) and Frederica Rijkenberg (b/w)

What are Affordances? Top-3 most downloaded in Ecological Psychology

My VIDI-research group at the University of Amsterdam works on a project named ‘The Landscape of Affordances: Situating the Embodied Mind’.  But what are affordances exactly? Our new philosophical article (in collaboration with Julian Kiverstein) deals with this important question, amongst others. We just learned from the publisher that it features in the top-3 most downloaded articles published in Ecological Psychology in 2014. To celebrate this the publisher now offers free access to the paper, which is titled ‘A rich landscape of affordances‘.


In recent years, more and more researchers in cognitive science have embraced the notion that was originally introduced by J.J. Gibson. However, the notion of affordances is complex and unfortunately it often is used in ways that ignore its roots in Gibsonian ecological psychology (e.g. Reed, 1996 and Heft, 2001). In this conceptual article we take insights from that tradition seriously and integrate these with my own earlier philosophical work on situated normativity in Wittgenstein (Rietveld, 2008, Mind) to develop an improved definition of affordances. One that will inspire new research projects in philosophy, art and science.

Free access to article here: Rietveld, E. & Kiverstein, J. (2014). A rich landscape of affordances. Ecological Psychology 26 (4), pp. 325-352.


In a complementary paper we have argued that taking seriously the richness of the landscape of affordances has important implications for a neuroscience that recognizes the situatedness of the embodied mind. We also sketch its implications for Karl Friston’s work on the ‘anticipating brain’.

Update: These philosophical ideas on the landscape of affordances have inspired RAAAF and visual artist Barbara Visser to make an artwork titled ‘The End of Sitting: Outstanding Landscape of Affordances‘. This large spatial installation allows people to experience a novel landscape of standing affordances and move through it. It is the visual, or better artistic, complement to some of the ideas developed in our Ecological Psychology paper. One of the ambitions of the installation was to offer a large variety of standing affordances so that people would be solicited by multiple possibilities for working in different positions, ideally motivating them to switch postures every 30 minutes or so.

Updates 12/12/15: Our Ecological Psychology paper is now in their top 3 most read papers of all times online and RAAAF has been elected New Talent by New York’s Metropolis magazine for being at the forefront in the development of an architecture of affordances that could architects “create an architecture that is more human”. Harvard Design Magazine has published our article on the landscape of standing affordances we built.

New publication on self-organization and skilled intentionality

Jelle Bruineberg and I have published a new paper on self-organization and skilled intentionality. (An earlier 2008 paper on this topic can be found here.) Jelle is one of the PhD-students on VIDI-project ‘Landscape of Affordances: Situating the Embodied Mind’ at the University of Amsterdam. The paper is published in a Frontiers in Human Neuroscience special issue on the implications of Tony Chemero’s (2009) book Radical Embodied Cognitive Science. Here is the abstract and a link to the page where one can download the PDF of our paper:


Self-organization, free energy minimization, and optimal grip on a field of affordances

In this paper, we set out to develop a theoretical and conceptual framework for the new field of Radical Embodied Cognitive Neuroscience (cf. Chemero, 2009). This framework should be able to integrate insights from several relevant disciplines: theory on embodied cognition, ecological psychology, phenomenology, dynamical systems theory, and neurodynamics. We suggest that the main task of Radical Embodied Cognitive Neuroscience is to investigate the phenomenon of skilled intentionality from the perspective of the self-organization of the brain-body-environment system, while doing justice to the phenomenology of skilled action.

In previous work, we have characterized skilled intentionality as the organism’s tendency towards an optimal grip on multiple relevant affordances simultaneously (Rietveld, 2012a/b/c). Affordances are possibilities for action provided by the environment (Gibson, 1979; Chemero, 2003). In the first part of this paper, we introduce the notion of skilled intentionality and the phenomenon of responsiveness to a field of relevant affordances.

FigureRietveldBruineberg2014ISSASpdf2Figure 1: Sketch of conceptual framework to be refined (Rietveld, 2012c). Through skilled intentionality one gets a grip on a field of affordances. (Inspired by: Thompson, 2007, 2011; Chemero, 2003, 2009; Dreyfus, 2007; Tschacher & Haken, 2007; Rietveld, 2008a/b/c).

Second, we use Friston’s (2000, 2011) work on neurodynamics, but embed a very minimal version of his Free Energy Principle in the ecological niche of the animal. Thus amended, this principle is helpful for understanding the embeddedness of neurodynamics within the dynamics of the brain-body-environment system. Next, we show how we can use this adjusted principle to understand the neurodynamics of selective openness to the environment: interacting action-readiness patterns at multiple timescales contribute to the organism’s selective openness to relevant affordances.

In the final part of the paper, we emphasize the important role of metastable dynamics in both the brain and the brain-body-environment system for adequate affordance-responsiveness. We exemplify our integrative approach by presenting research (De Haan, Rietveld, Stokhof & Denys, 2013) on the impact of Deep Brain Stimulation on affordance responsiveness of OCD patients.

A giant monkey rock, that is how the office of the future might well look like

Sitting kills. RAAAF | Barbara Visser made with their Outstanding Landscape of Affordances a vision on the future of the workplace where the chair and the table are no longer the starting point. Barbara Visser is a visual artist and since 2014 chair of the recently re-established Society of Arts of the Netherlands Royal Academy (KNAW). This new work was commissioned by the Netherlands Chief Government Architect and motivated by a widely shared feeling of dissatisfaction with present-day standardized open spaces for “flex-working” as implemented at the various ministries, municipalities and universities.


Medical research has suggested that constantly sitting at work is bad for you. Even worse, a recent BBC News article noted: “We can’t simply fix it by heading for the gym.” Sitting kills. The BBC-article was titled: “Could offices change from sitting to standing?” Outstanding Landscape of Affordances shows how our offices could invite a more active and healthy life style. RAAAF | Barbara Visser presented an animation of a futuristic landscape of possibilities for working while standing up, a sculpture to be realized by the artists in Amsterdam later this year.


The mute animation ‘Sitting Kills’ shows a large rock-like structure. It is designed out of a thousand different possibilities for working in positions between standing and laying. The key is that the sculpture’s affordances stimulate people to take up different working positions during the day and promotes concentration. The richness of this landscape of affordances gives people the freedom to find the optimal position for their different tasks and needs during the working day. This vision presents a radical break with regular office furniture and current working models such as “flex-working”, which all are still based on sitting. In fact our societies’ entire surroundings are designed for being seated. This is a first step towards a future in which standing at work is the new norm. A lifelong health where we are both physically and mentally active.

This project is is also a next step in visualizing the landscape of affordances, this time focusing on possibities for standing, leaning and hanging provided by the monkey rock-like sculpture. Links to earlier visualizations related to Erik Rietveld’s VIDI-project ‘The Landscape of Affordances’ can be found here.

Designboom’s coverage of the animation can be found here.

See also how Barbara Visser has filmed the tendency towards optimal grip on standing affordances in these making-of movies: 

Update 11/12/14: The Landscape of Standing Affordances has now been built as an enactive art installation, see here.

Upcoming invited talks Spring 2014

Over the next few weeks we will present work at several interesting and recommended events. Most are in the field of enactive or embodied cogntive science, some in the fields of art & architecture.

May 22, An Outstanding Landscape of Affordances, lecture and animation, RAAAF together with Barbara Visser, Invited by Atelier of the Chief Government Architect (Rijksbouwmeester Frits van Dongen), Ministry of Finance, The Hague.

May 26, Sitting Kills: Towards an Landscape of Standing Affordances, Grand Round, Academic Medical Center (AMC), Amsterdam.

June 20, The Landscape of Affordances: Situating the Embodied Mind, Expert Meeting Psychiatry & Philosophy, Radboud University, Nijmegen.

June 20, Expert Practice in DBS Parameter Optimization (presented by Maarten van Westen), Expert Meeting Psychiatry & Philosophy, Radboud University, Nijmegen.

June 24, Vacant NL on the Move (together with Ronald Rietveld), Kunsthal, Rotterdam. (An interview with Dutch newspaper Volkskrant can be found below.)InterviewVolkskrant2zoom230614

June 24, Vacancy Studies (presented by Arna Mackic), Strijp S, Eindhoven.

June 26, Affordances in archtectural practice, EWEP 13 symposium organized by Rob Withagen ‘Affordances and architecture: Towards an ecological approach‘, Queens University, Belfast.

July 6-14, Action readiness in a landscape of affordances (together with Jelle Bruineberg), International Summer School in Affective Sciences, Swiss NCCR Affective Sciences Center (ISSAS), Geneva University, Château de Bossey, Switzerland.