Conditioned reflexes, defense mechanisms, panic disorder, consciousness and unconsciousness…
“I’ve heard this psychology term somewhere before.”
Psychological terms that are floating around in my head,
Now, let's organize it all clearly in this one book!

"I could vividly feel the essence of psychology throughout the book."
Kim Kyung-il | Cognitive psychologist, author of "The Wisdom of the Mind"

“If you want to study psychology properly, this book will definitely save you a lot of wasted time.”
Choi Seol-min | Operator of the YouTube channel "Learn Psychology Through Play" with 850,000 subscribers

Numerous fields of psychology have become popular recently, including criminal psychology, educational psychology, counseling psychology, consumer psychology, and investment psychology.
When we wonder about our boss's feelings, our child's feelings, or even the feelings of a close friend, we try to find answers in psychology.
Nowadays, it is essential to study psychology.
However, the psychological knowledge introduced in various media such as books, lectures, TV, and YouTube is still vague.
In particular, there is a severe lack of content that clearly organizes the fragmented and confusing knowledge floating around.
For readers thirsty for psychological knowledge, “Finally, Psychology Class” was published.
This book neatly organizes the work of about 80 psychologists and 50 psychological theories.
Readers can now make their own the psychological knowledge they had vaguely known.
In the process of acquiring various psychological knowledge, we will be able to solve the big and small problems we face in our daily lives one by one.
It also includes colorful visual aids to help you understand the content, so anyone can study psychology easily and enjoyably.
Whether you're new to psychology or want to systematically organize your knowledge, this book is all you need.

The ego develops naturally as a child interacts with the world around him or her over the course of three years.
So Freud said that the ego follows the 'reality principle'.
The ego gradually realizes that there are people around it with desires and needs, and that acting impulsively or selfishly can cause real harm.
The ego must satisfy the id's needs while taking into account realistic situations.
For example, if a child reconsiders a wrong action after considering the negative consequences of the wrong action, it means that the ego is at work.

--- p.26

While Fromm agreed with the common belief that individuals must be free from external authority to be free, he argued that there are psychological processes within humans that limit and suppress freedom.
So, I said that in order for an individual to enjoy true freedom, he or she must overcome this process.
According to Fromm, freedom is a state of independence and a state of not relying on anyone outside of oneself for purpose or meaning.
Therefore, freedom can lead to feelings of isolation, fear, alienation, emptiness, and in extreme cases, true freedom can become a form of mental illness.

--- p.73

Cognitive psychology is a branch of psychology that focuses on how humans acquire, process, and store information.
Before the 1950s, behaviorism was the dominant school of thought, but over the next two decades, psychology shifted from studying observable behavior to studying internal mental processes.
We started focusing on topics like attention, memory, problem solving, perception, intelligence, decision making, and language processing.
Cognitive psychology differs from psychoanalysis in that it examines mental processes through scientific research methods rather than relying on the subjective perceptions of the psychoanalyst.

--- p.85

The illusion of consensus is the phenomenon of believing that one's opinions or beliefs are the common opinions and beliefs of everyone else.
Similarly, the illusion of uniqueness effect is the phenomenon of underestimating how common our abilities and good traits actually are.
The illusion of consensus and the illusion of uniqueness are examples of cognitive biases, which are judgmental flaws that occur in our minds to process information at a faster rate.

--- p.123

Adler was convinced that the drive for personal gain, "superiority," and the drive for community gain, "success," are the driving forces that drive us to act.
Everyone feels inferior from the beginning because they are born with a small and weak body.
And we try to overcome this feeling.
People who strive for superiority are psychologically unhealthy because they are not interested in others and are focused only on their own interests.
On the other hand, people who strive for success are psychologically healthy because they do not lose their own identity while striving for the good of all humanity.

--- p.153

John Bowlby was the first researcher to develop attachment theory and a psychologist who examined how early attachments significantly impact our lives.
Attachment refers to the psychological bond between two people.
Attachment is a psychological force that keeps a child close to its mother, increasing the child's chances of survival.
Bowlby believed that children are hardwired to form attachments for survival.
Furthermore, the bond formed in early life is a bond between a child and a caregiver, and this bond can have a lasting impact on the child's life later on.

--- p.201

The main goal of Ellis' rational emotive behavior therapy is to help patients change their irrational beliefs into rational ones.
This is done by the therapist challenging the patient's irrational beliefs.
For example, a therapist might ask a patient, “Why should people be kind to you?”
In answering this question, the patient realizes that there is no rational reason why this belief should necessarily be realized.
--- p.227

The Stanford Prison Experiment is one of the most important and controversial psychological experiments ever conducted.
The current ethical guidelines of the American Psychological Association make it impossible to replicate this experiment.
However, Zimbardo has clearly demonstrated how a given situation can influence people's behavior.
Numerous real-world cases, including the prisoner abuse incident at Abu Ghraib in Iraq, corroborate Zimbardo's research.
--- p.261

Stress is a state in which a physiological response occurs due to external stimuli.
The stimulus can be psychological or physiological.
Stress can be long-term or short-term.
Contrary to popular belief, stress is not just a feeling.
Stress can have a real impact on our biological and psychological state.
Although we often think of stress as a worry, it is actually more than that and is not necessarily a bad thing.
In fact, there are two types of stress: negative stress and positive stress, and each type of stress is caused by negative or positive events.

--- p.280

Good leadership can come from helping followers understand what they need to reach their full potential, or it can come from establishing a system of rewards and punishments.
Studying leadership theories and understanding how others respond to your leadership style can be a practical way to adapt to the world.
Because there are many ways to become a great leader, it's important to explore various leadership theories to become a good leader.

--- p.314

Personality disorders are patterns of behavior and internal experiences that deviate from the norms of the society to which a person belongs.
This pattern is inflexible and inevitable, beginning in adolescence or early adulthood.
It may cause serious distress or damage to your daily life.
Researchers haven't yet pinpointed what causes personality disorders.
Some believe it is a result of genetics, while others believe the underlying cause lies in childhood experiences that prevent the development of normal behavior and thought patterns.

--- p.334

Art is a richly expressive medium.
Art helps people communicate and relieve stress.
It also allows each individual to discover and study the various aspects of their personality.
In psychology, art is used to improve an individual's mental health or treat psychological disorders, a process called 'art therapy'.
Art therapy integrates the process of creating art with psychotherapy techniques to help individuals resolve their problems and regulate their behavior.
It also helps reduce the stress you face in everyday life, improve interpersonal skills, and strengthen self-awareness and self-control.

--- p.371