13.1 What Is Industrial and Organizational Psychology — Workday As Architecture | Psychology 2e

• Understand what Industrial and Organizational (I/O) psychology is and its broad scope.
• Learn the three main traditional branches of I/O psychology and their focus.
• Understand the role of industrial psychology in hiring, training, and performance evaluation.
• Learn how organizational psychology studies social and psychological workplace environments.
• Understand human factors psychology's focus on physical interaction with tools and environments.
• Use a dating analogy to differentiate and connect the three core I/O psychology branches.
• Explore OHP's role in mitigating workplace stress and its 'spillover' into personal life.
• Discover how HWP applies I/O psychology to global crises and humanitarian aid.
• Understand Frederick Taylor's early 20th-century approach to maximizing industrial efficiency.
• Recognize the negative impacts of Taylor's scientific management on worker morale and autonomy.
• Learn about Lillian Gilbreth's pioneering work in employee fatigue and job satisfaction.
• Understand how the military's need for personnel selection during WWI advanced I/O psychology.
• Understand the Hawthorne effect and its discovery through the Hawthorne Studies.
• Learn about Kurt Lewin's research on leadership styles and group dynamics in the workplace.
• Examine how the 1964 Civil Rights Act transformed I/O psychology and employment practices.
• Consider the future challenges for I/O psychology with remote work and AI monitoring.
• Up next in “Psychology 2e — Full Course (OpenStax) | Intro Psychology Lectures”13.2 Industrial Psychology Selecting and Evaluating Employees — Too Smart Rejected | Psychology 2e

You spend up to 54 hours a week at work — more waking time than anything else in your life. This lesson explores the science behind that reality: Industrial and Organizational (I-O) Psychology, the field that studies how human behavior shapes work and how work, in turn, shapes us. Drawing from Section 13.1 of OpenStax Psychology 2e, we trace the field from Frederick Taylor's stopwatch-timed iron ingots to the Hawthorne Effect, Lillian Gilbreth's motion-saving inventions, and today's global and humanitarian applications. In this video: • The three branches of I-O psychology: industrial (hiring & selection), organizational (culture & relationships), and human factors (ergonomics & tool design) • Occupational Health Psychology (OHP) and how workplace stress 'spills over' into personal life and family well-being • Humanitarian Work Psychology (HWP), founded in 2009, and how KSA training empowers marginalized communities beyond a crisis • Frederick Taylor's iron ingot experiment: productivity jumped from 12.5 to 47 tons/day — and the fierce criticism his worker-as-machine philosophy earned • Lillian Gilbreth's contrasting approach: studying fatigue, job satisfaction, and the psychology of workflow (plus the foot-pedal trash can and refrigerator door shelves) • WWI's Army Alpha and Army Beta tests as the first large-scale standardized personnel selection effort in history • The Hawthorne Effect: how Mayo's lighting studies at Western Electric accidentally proved that being observed — not physical conditions — drives worker performance #OpenStax #IOPsychology #WorkplacePsychology #HawthornEffect #OrganizationalPsychology OpenStax Content adapted from "OpenStax Psychology 2e", by OpenStax licensed under CC BY 4.0. Content based on Web Version: Apr 23, 2026. Read the textbook online https://openstax.org/details/books/psychology-2e Music first girl talking to me. by ikkun (ex. Barradeen) | https://soundcloud.com/ikkunwastaken Royalty Free Music by https://www.free-stock-music.com Creative Commons / Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) https://creativecommons.org/licenses/by-sa/3.0/deed.en_US