Question

How does a scenario-based design approach help identify key design decisions on a project?

Answer 1

Scenario-based design is a family of techniques in which the use of a future system is concretely described at an early point in the development process. Narrative descriptions of envisioned usage episodes are then employed in a variety of ways to guide the development of the system that will enable these use experiences.

Like other user-centered approaches, scenario-based design changes the focus of design work from defining system operations (i.e., functional specification) to describing how people will use a system to accomplish work tasks and other activities. However, unlike approaches that consider human behavior and experience through formal analysis and modeling of well-specified tasks, scenario-based design is a relatively lightweight method for envisioning future use possibilities.

A user interaction scenario is a sketch of use. It is intended to vividly capture the essence of an interaction design, much as a two-dimensional, paper-and-pencil sketch captures the essence of a physical design.

Scenarios are stories. They consist of a setting, or situation state, one or more actors with personal motivations, knowledge, and capabilities, and various tools and objects that the actors encounter and manipulate. The scenario describes a sequence of actions and events that lead to an outcome. These actions and events are related in a usage context that includes the goals, plans, and reactions of the people taking part in the episode.

Scenarios have become so popular in interactive system design is that they enable rapid communication about usage possibilities and concerns among many different stakeholders. It is easy to write simple scenarios such as those in Table 1, and takes only a little more effort to enrich it with a rough sketch or storyboard. When designers are working through ideas, they want to make progress quickly, so that they can obtain feedback and continue to refine their ideas. Scenarios are one way to do this.

Please do give a like thanks...!!