Lesson 1: What Is Psychology?

Have you ever wondered what psychology really is?
By the end of this lesson, you’ll know:

• What psychology actually is
• Where it came from
• How to start thinking like a psychologist today

Before Psychology Was a Science

Long before psychology existed as a formal discipline, humans were already asking the big questions:

• What is the mind?
• What makes us who we are?
• How do we learn, think, and make choices?

This curiosity began with early Greek philosophers like Plato and Aristotle, who used observation and debate — not experiments — to understand human nature.

The Enlightenment: The Shift Toward Science

Fast forward to the Age of Enlightenment, where philosophy began moving toward scientific thinking.

Key contributors included:

René Descartes

• Argued that the mind and body are separate
• Opened the door to studying the mind independently

David Hume

• Believed knowledge comes from experience and observation

Immanuel Kant

• Suggested the mind actively organizes our experiences
• Implied humans shape meaning instead of passively absorbing it

These ideas formed a bridge that allowed psychology to become a measurable science.

Wilhelm Wundt and the Birth of Psychology

Influenced by Enlightenment thinking, physiologist Wilhelm Wundt believed the mind could be studied using scientific methods.

• 1879: Wundt opened the first psychology laboratory at the University of Leipzig in Germany
• This moment is considered the official birth of psychology as a scientific discipline

This shift marked psychology’s separation from philosophy and its emergence as a true science.

What Is Psychology Today?

Psychology is defined as:

“The scientific study of mind and behavior.”

• Mind = thoughts, emotions, memories, and internal experiences
• Behavior = actions that can be observed or measured

Psychology studies both because internal experiences influence what we do.

The Four Goals of Psychology

One of the most powerful tools for thinking like a psychologist is understanding the four goals of psychology:

1. Describe Behavior

Ask: What is happening?
This is the observation step.

2. Explain Behavior

Ask: Why is this happening?
Here we look for causes, influences, or motives.

3. Predict Behavior

Ask: When is this likely to happen again?
This helps us anticipate patterns.

4. Influence or Modify Behavior

Ask: How can we help someone change or improve?
This is the applied side of psychology — therapy, interventions, support.

These goals guide everything from research to clinical work.

Seven Major Perspectives in Psychology

Psychology is not a single theory — it’s a toolkit of perspectives that help us understand human behavior from different angles.

Here are the seven main perspectives:

1. Biological Perspective

Focuses on the brain, body, genetics, and physiology.

2. Cognitive Perspective

Focuses on thoughts, mental processes, memory, and problem-solving.

3. Behavioral Perspective

Focuses on learning, reinforcement, and the environment.

4. Humanistic Perspective

Focuses on personal growth, meaning, and self-actualization.

5. Psychodynamic Perspective

Explores unconscious motives and early childhood experiences.

6. Sociocultural Perspective

Focuses on culture, identity, social environments, and relationships.

7. Evolutionary Perspective

Examines universal patterns shaped by survival and adaptation.

In Lesson 2, we’ll take a deeper look at each perspective.

Lesson Recap

Here’s a quick summary of Lesson One:

• Psychology began with philosophy
• Wundt transformed it into a scientific discipline
• Psychology studies both the mind and behavior
• The four goals of psychology guide how psychologists work
• There are seven major perspectives we will explore throughout this course

Coming Up Next

Great job finishing Lesson One!

In the next lesson, we’re diving into:

• The seven major psychological perspectives
• The different subfields within psychology
• How each perspective shapes your daily thoughts and behaviors

Make sure you subscribe so you don’t miss Lesson Two.
I’ll see you there!