Welcome to Environmental Psychology!
Ever wondered why you feel more relaxed in a park than in a crowded city? Or why it’s so hard to sleep after a night shift? That is exactly what Environmental Psychology is about! In this chapter of your Applied Psychology course, we explore the two-way street between humans and their surroundings. We’ll look at how the environment changes our biology, our thoughts, and our social lives.
Don't worry if some of the study names sound long—we will break them down into simple "who, what, and why" sections. Let’s dive in!
1. Stressors in the Environment (Biological)
An environmental stressor is anything in our surroundings that causes a stress response in our bodies. The most common one studied is noise.
Key Research: Black and Black (2007)
The Aim: To see if living near a busy airport causes physical health problems, specifically hypertension (high blood pressure).
The Study: They compared people living in a "noise zone" near Sydney Airport to those in a quiet area. They measured their blood pressure and asked them about their stress levels.
The Finding: People near the airport had much higher levels of hypertension and reported lower health-related quality of life. This shows that environmental noise isn't just annoying; it actually changes our biological responses.
Application: Managing Environmental Stress
How can we fix this? One strategy is sound insulation (double glazing windows) or creating "quiet zones" in cities. Another is using white noise machines to mask unpredictable, stressful sounds.
Quick Review: Stressors
• Key Term: Hypertension = High blood pressure caused by long-term stress.
• Key Study: Black and Black (2007) – Aircraft noise leads to physical illness.
2. Biological Rhythms (Biological)
Our bodies have an internal clock called a circadian rhythm. It follows a 24-hour cycle of sleep and wakefulness. When the environment messes with this (like working at night), things go wrong.
Key Research: Czeisler et al. (1982)
The Problem: Shift workers often feel sick and tired because their schedules change too fast. This is called circadian disruption.
The Study: Czeisler worked with a chemical plant. He changed the workers' schedules so they rotated forward (day shift -> evening shift -> night shift). This is called phase delay. He also made the shifts stay the same for 21 days instead of 7.
The Finding: Workers were healthier, happier, and the factory became more productive! It’s easier for the body to "stay up late" (phase delay) than to "go to bed early" (phase advance).
Application: Reducing Jetlag or Shift Work Effects
To help people adjust, we use light therapy. Bright lights at specific times can "reset" the internal clock to match the environment.
Memory Aid: Think of Czeisler as "Sizer"—he resized the work schedule to fit the human clock!
Key Takeaway:
The human body prefers phase delay (rotating shifts forward in time) because it mimics a slightly longer natural day.
3. Recycling and Conservation (Cognitive)
This section looks at how our thoughts (cognition) influence whether we protect the planet. Why do some people recycle and others don't?
Key Research: Lord (1994)
The Study: Lord looked at how different messages changed recycling habits. He compared positively framed messages ("Recycling helps the earth") with negatively framed messages ("Not recycling hurts the earth"). He also looked at who sent the message (the source).
The Finding: Negatively framed messages (showing what you lose) were actually more powerful at getting people to start recycling! Also, the message worked better if it came from a trusted source, like a neighbor, rather than a stranger.
Application: Increasing Conservation
If you want people to recycle, use social modeling. If people see their neighbors doing it, they are much more likely to join in because of social norms.
Common Mistake to Avoid:
Students often think positive messages are always better. In Lord's study, negative framing (fear of losing something) was often more effective!
4. Ergonomics – Human Factors (Cognitive)
Ergonomics is the science of designing things so they are easy for humans to use. It's about preventing cognitive overload (when your brain has too much to process).
Key Research: Drews and Doig (2014)
The Problem: Nurses in Intensive Care Units (ICUs) have to look at monitors with tons of numbers. This causes cognitive overload, which leads to mistakes.
The Study: They compared a standard display (just numbers) to a configural display (a simple shape that changes when the patient’s vitals change).
The Finding: Nurses using the configural display spotted problems much faster and with fewer errors. It was easier for their brains to process a "shape" than a list of numbers.
Application: Workplace Design
Psychologists use this research to design cockpits for pilots or dashboards for cars to make sure the most important info stands out clearly.
Analogy: Imagine a car that just says "ENGINE BAD" in big red letters instead of showing 10 different tiny gauges. That’s ergonomics!
5. Psychological Effects of the Built Environment (Social)
How do buildings affect our feelings? Urban renewal and architecture can change our mental health.
Key Research: Ulrich (1984)
The Study: Ulrich looked at patients recovering from gallbladder surgery. Half had a view through a window of a small stand of trees. The other half looked at a brick wall.
The Finding: The "tree view" group recovered faster, took fewer strong painkillers, and were more cheerful. This proves that nature in our built environment is a powerful healing tool.
Application: Environmental Design for Health
This is why modern hospitals often have healing gardens or large windows. Even pictures of nature can help reduce stress in windowless offices.
Quick Review:
• Ulrich (1984): Trees > Bricks.
• Social Impact: Our physical surroundings change how we interact and how we feel.
6. Territory and Personal Space (Social)
We all have a "bubble" around us. In the workplace, we use territorial markers to feel safe and in control.
Key Research: Wells (2000)
The Study: Wells looked at office personalization. Why do people put up photos of their dog or their travel souvenirs on their desks?
The Finding: Personalization is linked to well-being. It helps people mark their territory, which reduces stress and makes them feel more committed to their job. Interestingly, women often personalize their space more than men do.
Application: Office Design Strategy
Companies should allow personal displays. Open-plan offices that don't allow personal items can actually make workers feel less happy and less productive.
Did you know? Marking territory isn't just for animals. When you put your coat on a chair at the library, you are using a territorial marker!
Key Takeaway:
Personalizing a workspace isn't just "mess"—it’s a vital way for humans to feel a sense of control and belonging in their environment.
Summary of Environmental Psychology
To wrap up, remember that Environmental Psychology covers three main areas:
1. Biological: How noise (Black and Black) and work shifts (Czeisler) affect our bodies.
2. Cognitive: How we process recycling messages (Lord) and simplify complex data (Drews and Doig).
3. Social: How nature views (Ulrich) and personalizing our space (Wells) affect our happiness and health.
You've got this! Just remember to link each study back to whether it's about the body (biological), the mind (cognitive), or our feelings and groups (social).