Alex Chaparro & Barbara S. Chaparro 
Introduction to Human Factors [PDF ebook] 
Applying Psychology to Design

This is a comprehensive, but accessible text that introduces students to the fields of human factors and ergonomics. The book is intended for undergraduate students, written from the psychological science perspective along with various pedagogical components that will enhance student comprehension and learning. This book is ideal for those introductory courses that wish to introduce students to the multifaceted areas of human factors and ergonomics along with practical knowledge the students can apply in their own lives.