ABSTRACT
This chapter discusses the role of skill-based behavior in human performance. In skill-based behavior there is a rapid choice of action following a rapid perception of a stimulus or event. Both speed (response time), and accuracy are important in skill-based behavior. An important consideration for response time is the degree of uncertainty about what stimulus event will occur, and therefore the degree of choice in the action to make. A key concept for engineering psychologists discussed in this chapter is that trade-offs are often necessary; for example, trade-offs between speed and accuracy. The chapter also discusses capability trade-offs that may limit certain interface and choice of controls. Building on the work of previous chapters, this chapter provides aspiring engineering psychologists an understanding of the role of skilled selection of action and how good designs facilitate skilled action, and thus improve performance.
