This book explores the usefulness of looking at very small aspects of human behavior in order to understand computer-human interaction difficulties with hypertext. The focus is on both mechanical actions and talk as social action. While this approach has been used fruitfully to study human-human interaction, Gray has constructed a unique study of human interaction with machines.

Special Features: -Each module chapter contains a review of the most important material from previous chapters -Each unit provides a clear, nonstatistical explanation of any symbols appearing in the formulas for that chapter. -Each chapter reviewing hypothesis-testing procedures contains its own distribution tables -An illustrative excercise is reviewed with each statistical technique introduced -Review questions are included in each chapter -Step-by-step procedure rather than drill is emphasized