Study Notes on Environmental Influence vs. Genetics in Psychology

Debate exists regarding whether biology (genetics) or experiences (environment) play a more crucial role in shaping individuals.
Notable opposition to the idea of genetics determining destiny comes from psychologist John Watson.

Watson argues against eugenics, which posits that human beings are bound by their genetic makeup.
He contends that humans are predominantly shaped by their environment, suggesting that genetics do not predetermine behavior.
The concept of tabula rasa (blank slate):
- Watson believes that individuals are born as empty vessels, and nearly all behaviors, including instinctual ones such as fear, are learned through experiences.
To provide evidence for his theories, Watson conducts a significant experiment on an infant known as Little Albert.

The experiment is designed to demonstrate that fears can be conditioned rather than inherited.
Initial Observations:
- Little Albert shows no fear towards a burning newspaper or a white rat upon their first encounters.
Conditioning Phase:
- Watson repeatedly presents the rat while producing a loud clanging noise, something that distresses Albert.
- This pairing of the rat with a disturbing noise leads to a learned fear of the rat and generalization to all furry objects.
In Watson’s conclusion, the success of this experiment supports his theory that fears are learned behaviors.

Watson coins the term Behaviorism and advocates for an active parental role in shaping children's environments.
He views the home as a laboratory where parents can scientifically shape their children.

Building on Watson's work, psychologist B.F. Skinner further investigates the importance of environment in behavior development.
Skinner postulates that altering the environment can effectively change individual behaviors.
Skinner's Background:
- Skinner was inventive during his childhood, creating gadgets to improve daily tasks.
During World War II, he developed a device for the US military that involved training pigeons to guide missiles, although the military did not implement it at that time.

Definition: Operant conditioning is a learning process through which the consequences of a behavior either strengthen or weaken that behavior.
Experiment with Pigeons:
- Skinner uses hungry pigeons in controlled environments to demonstrate operant conditioning.
- As the pigeon moves randomly, specific movements (e.g., turning its head) are positively reinforced with food.
- Over time, pigeons learn to perform more complex behaviors through reinforcement, ultimately demonstrating that behaviors can be conditioned step by step.

Skinner believes the principles of operant conditioning, which successfully train pigeons, can also be applied to humans.
Educational Success:
- Education can be enhanced by breaking down complex tasks into smaller steps and reinforcing behavior positively, demonstrating the extensibility of Skinner’s theories.
Philosophical View: Skinner's work leads to the idea that humans can be developed in countless ways when environments are manipulated correctly.

Children exposed to aggressive modeling demonstrate increased attraction to guns and hostile behaviors.
Contrary to prior beliefs, observing aggression does not drain aggressive impulses but instead reinforces and can increase them.
Relevant experiments reveal that children who witnessed aggressive behaviors adopted that language and behavior patterns when interacting with play materials.

An observational study of children interacting with toys highlights how gender stereotypes influence choice.
Example of a child initially assigned a sex (e.g. 'girl') modifies their play behavior and perceptions, indicating underlying societal conditioning.
Key Takeaway: Even subconscious factors, such as gender norms, influence individual preferences and reactions in play settings.