Human Computer Interaction (HCI) is no longer limited to trained software users. Today people interact with various devices such as mobile phones, tablets, and laptops. How can such interaction be made more user friendly, even when user proficiency levels vary? This book explores methods for assessing the psychological complexity of compute


This book offers analytical methods for studying human work in ergonomics and psychology that are similar to ones utilized by the engineering sciences. SSAT offers not only new qualitative but also formalized and quantitative methods of analysis. This book will describe quantitative methods of task complexity and reliability assessment, application of queuing theory, etc. The book will also present new data in the area of efficiency of labor force and its evaluation.


Every complex human-machine system includes a computer as a critically important means of work. However, an operator's interaction with a computerized system cannot be reduced to only performing computer-based tasks. Today human-computer interaction (HCI) is not limited to trained software users. People of all ages use all different kinds of gadget