This document provides an overview of emotion research strategies and methods for measuring emotions. It discusses cognitive appraisal theory and how emotions are goal-oriented. Various methods for measuring emotions are presented, including self-report instruments, facial coding, voice analysis, and physiological measures. Factors that reliably predict customer delight are explored, including ease of use, satisfaction of needs, and delight of interaction. Experimental paradigms and costs/tradeoffs of emotion measurement methods are also considered.