From GUI to E(motional) UI

How ironic that we think we can get more exact results from our computers by emulating human interaction, but when we want exact results from human interaction, we unintentionally emulate computers. Engineering, air traffic control, legal contracts--in all endeavors where precise communication is critical--our success has depended on washing out human emotion and natural language in favor of formal procedures and protocols, complete with a detailed domain-specific language.

Agro, Leandro. UXmatters (2006). Articles>User Centered Design>User Interface>Emotions

Emotion and Voice User Interfaces

When you hear the term voice user interface (VUI), what comes to mind? Most likely, memories of an interactive voice response system (IVR) for customer service arise. IVRs are certainly not going away. For many companies, they remain the foremost contact point with customers. But voice user interfaces are more than just IVRs. In fact, VUIs have tremendous potential for enhancing the experience of any mobile phone user. As the use of mobile devices and applications proliferates internationally, understanding how to integrate, or mash up, graphic user interfaces (GUI) and VUIs is becoming critically important.

Clayton, Darnell and Colleen Jones. UXmatters (2008). Articles>User Interface>Emotions>Voice