Introduction to the Nature vs. Nurture Debate
Welcome to one of the most famous debates in all of Psychology! Have you ever wondered why you are the way you are? Is it because you were "born that way" (your genes and biology), or is it because of how you were raised and the things you’ve experienced (your environment and upbringing)?
In this chapter, we explore the Nature versus Nurture debate. This is a key "Issue and Debate" in your AS Level Psychology course. Understanding this will help you evaluate the 12 core studies and see how different psychologists explain human behaviour. Don't worry if it feels like a big topic—we will break it down piece by piece!
What is "Nature"?
The nature side of the debate argues that behaviour is the result of innate (inborn) factors. This means we are born with certain blueprints that determine how we develop.
According to the Biological Approach in your syllabus, nature includes:
1. Genetics: The DNA we inherit from our parents.
2. The Brain: How the structure and functions of our brain dictate our actions.
3. Hormones: Chemical messengers (like testosterone or oxytocin) that change how we feel and act.
4. Evolution: Behaviours that have developed over millions of years to help us survive.
Analogy: Think of Nature like the "hardware" of a computer. It’s the physical stuff the computer comes with when you take it out of the box.
What is "Nurture"?
The nurture side of the debate argues that we are born as a "blank slate" (a term used in the Learning Approach). This means our behaviour is shaped entirely by our environment and our experiences after we are born.
According to the Learning and Social approaches, nurture includes:
1. Socialisation: How our parents, teachers, and friends teach us to behave.
2. Conditioning: Learning through rewards, punishments, or associations (like in the Fagen et al. elephant study).
3. Social Context: How the people around us or the situation we are in influences us (like in the Milgram obedience study).
Analogy: Think of Nurture like the "software" installed on a computer. The computer’s hardware stays the same, but the software determines what the computer actually does based on the data it receives.
Quick Review: The Main Difference
- Nature = Biology, Genes, "Born with it."
- Nurture = Environment, Experience, "Learned it."
Applying the Debate to Core Studies
In your exam, you will often be asked how a specific study relates to this debate. Here are some key examples from your syllabus:
1. Hassett et al. (Monkey toy preferences)
This study is a fantastic example of the interaction between nature and nurture. The researchers looked at whether male and female monkeys preferred "masculine" toys (wheeled toys) or "feminine" toys (plush toys).
- Nature: The study suggests that hormonal differences between males and females might drive toy preferences.
- Nurture: The study also considers socialisation—how animals (or humans) might be encouraged to play with certain toys by those around them.
2. Bandura et al. (Aggression)
This study focuses heavily on nurture. Bandura investigated Social Learning Theory. He showed that children who observed an adult acting aggressively toward a Bobo doll were more likely to imitate that behaviour. This suggests that aggression isn't just something we are born with; it is learned from our environment.
3. Hölzel et al. (Mindfulness and brain scans)
This study shows how nurture can change nature. The researchers found that practicing mindfulness (an environmental experience/activity) actually changed the grey matter density in the brain (a biological structure). This is a great example of how our experiences shape our biology!
4. Saavedra and Silverman (Button phobia)
This study looks at how a phobia was learned through a negative experience (nurture) and how it could be unlearned using therapy. It supports the idea that our emotions and fears are products of our experiences.
Why is this debate important?
Psychologists rarely say a behaviour is 100% nature or 100% nurture. Most modern psychology looks at how they interact. For example, you might be born with a genetic talent for music (nature), but if you never have access to an instrument (nurture), you will never become a musician.
Strengths of the Nature side:
- It uses objective methods (like brain scans or genetic testing).
- It can lead to medical treatments (like using drugs to balance hormones).
Strengths of the Nurture side:
- It suggests that behaviour can be changed. If a behaviour is learned, it can be unlearned!
- It considers the impact of social justice, parenting, and education on a person's life.
Common Mistakes to Avoid
- Mistake: Thinking "Nature" only means the Great Outdoors.
Correction: In Psychology, "Nature" always refers to biology and genetics.
- Mistake: Thinking a study must be only one or the other.
Correction: Most studies involve both. For example, in Dement and Kleitman, dreaming is a biological process (nature), but the content of the dreams might be based on your daily life (nurture).
Key Takeaways
- The Nature debate focuses on biological factors like genes and the brain.
- The Nurture debate focuses on environmental factors and learned experiences.
- The Biological Approach usually supports nature, while the Learning and Social approaches usually support nurture.
- The Cognitive Approach sits in the middle, looking at how our biological "computer" processes information from the environment.
Note: For more on how situations influence us, see the chapter on "Individual and situational explanations."