Handbook of usability and user experience edited by Marcelo M. Soares Francisco Rebelo and Tareq Z. Ahram ; Volume 1: Methods and techniques This volume is concerned with emerging ergonomics in design concepts theories and applications of human factors knowledge focusing on the discovery design and understanding of human interaction and usability issues with products and systems for their improvement. It is research focused and includes product case studies. The main target is for human factors and ergonomics professionals UX engineers UX designers software engineers and others responsible for the design of products services and systems