Affordance-Based Design: Status and Promise

Proceedings of the Design Society: International Conference on Engineering Design, 2019

Maier and Fadel pioneered Affordance-Based Design (ABD) based on Gibson's revolutionary theory of affordances and Norman's deployment of the concept in his book, “The Design of Everyday Things”. Gibson (1979) introduced the affordance concept into the discipline of Ecological Psychology to address the interactions between an object and an agent. The Ecological approach includes the direct perception of affordances for the user along with a consideration of the users’ biomechanics. However, as the concept of affordance was imported and utilized in different disciplines, including engineering design, some important aspects of Ecological theory were omitted.This paper is an attempt to review the definitions and different utilizations of the affordance concept focusing on the design of usable products to identify the different views and the missing elements. After addressing the divergent viewpoints of affordances, we provide recommendations to improve the usability aspects in A...

2004

The word" affordance" was originally invented by the perceptual psychologist JJ Gibson (1977, 1979) to refer to the actionable properties between the world and an actor (a person or animal). To Gibson, affordances are a relationship. They are a part of nature: they do not have to be visible, known, or desirable. Some affordances are yet to be discovered. Some are dangerous. I suspect that none of us know all the affordances of even everyday objects.

When developing an artifact, designers must first capture and represent consumer needs. These needs can then be transformed into system requirements or objectives. This paper proposes a formalized affordance-based method for capturing consumer needs which leverages previous work in the area of Affordance-based design. The creation of an affordance basis and a relational structure (the Desired Affordance Model) facilitates the use of affordances to represent consumer needs. This formalization has the potential to improve model quality and consistency, while managing model creation time. Further, this formalization imposes a level of abstraction which forces solution independence but is capable of capturing the large range of consumer needs.

Research in Engineering Design, 2009

Rather than developing methods to address problems as they occur, the effort in this paper is to formulate methods based on an explicit theory. Methods developed in this way have more scientific rigor because underlying propositions and assumptions are clearly articulated, thus the applicability and limitations of the methods are well defined. The underlying theory used in this work is that of affordance-based design, which has been developed by the authors in a recent series of papers, and is based in turn on the theory of affordances from perceptual psychology. This paper extends affordance-based design into prescriptive methods. A broad affordance-based design process is introduced together with methods for documenting affordances, methods for designing individual affordances, an affordance-based method for reverse engineering and redesign, the affordance structure matrix, and affordance-based selection matrices. Engineering examples used to illustrate the methods include the high level design of an automobile, comfort to automobile passengers, the meshing of gears, wear of gears, a vacuum cleaner, and automotive window switches.

Artificial Intelligence for Engineering Design, Analysis and Manufacturing, 2015

6th International Conference on Design Computing and Cognition (DCC'14)

Given the lack of agreement on the phenomenological elements of affordance, it is difficult to conduct empirical research to test systematic observations across contexts (e.g., industrial design and interaction design). To address this problem, this paper aims to establish a new understanding of the concept of affordance and its key concepts. Through a critical review of influential articles about affordance, the article identifies some uses and misuses of the concept. Then, a definition of affordance is provided, which delineates its foundational elements. Based on the definition, the article proposes a framework to explain how artefacts acquire affordances through the intentional behaviour of designers, certain material features, and contextual constructions. As a result, this research will contribute a new perspective on affordances that may help designers have predictable control over them when designing end-consumer products.

ASME Design Theory and Methodology …, 2005

The purpose of this paper is to attempt to clarify the concept of affordances, as introduced by Maier and Fadel, to relate affordances to function, to try to reduce confusion about both of these terms by providing a detailed model, and to expose some of the existing research on function to a wider audience. The paper starts by constructing a model of function that relates devices to an environment. We then extend the model to include goals. Next we express the concept of affordances in terms of the model already constructed. The paper concludes by discussing the impact that use of affordances might have on the designer's pattern of reasoning.

Design Studies, 2009

The idea of affordance, borrowed from perceptual psychology, is applied to the domain of architecture. As to architectural theory, affordances can be used as a conceptual framework to understand the relationship between environments and occupants, especially with respect to form and function. Regarding architectural design, the concept of affordance allows for a common theoretical basis to improve the design process. Concerning architectural practice, affordances can be used as a tool to explore the connection between the intentions of the design with how the artifact is actually used, leading to archived knowledge, and the potential for avoiding common design failures.

2000

The concept of affordance is popular in the HCI community but not well understood. Donald Norman appropriated the concept of affordances from James J. Gibson for the design of common objects and both implicitly and explicitly adjusted the meaning given by Gibson. There was, however, ambiguity in Norman's original definition and use of affordances which he has subsequently made efforts to clarify. His definition germinated quickly and through a review of the HCI literature we show that this ambiguity has lead to widely varying uses of the concept. Norman has recently acknowledged the ambiguity, however, important clarifications remain. Using affordances as a basis, we elucidate the role of the designer and the distinction between usefulness and usability. We expand Gibson's definition into a framework for design.