Introduction to Psychology: Foundations, Perspectives, and Scientific Thinking

Introduction to Psychology

Definition and Scope

Psychology is the scientific study of behaviour and mental processes. Psychologists describe, predict, and explain human behaviour and mental processes, seeking to answer questions about why people think and act as they do.

• Key Questions: What shapes human behaviour and the mind? Why do people dream? Are there more factors to Alzheimer's than genetics?

Controversial Topics in Psychology

• Social psychology: conformity, obedience

• Psychological disorders: crime, solitary confinement, incarceration

History and Major Perspectives in Psychology

Psychology: Past and Present

Psychology originated as a part of philosophy and later developed into a scientific discipline.

• Early psychology was considered a part of philosophy; ancient Greeks contemplated the mind.

• Formal beginnings: late 19th century

• Wilhelm Wundt: First psychology lab in 1879; studied building blocks of the mind (structuralism) using introspection.

Structuralism

• Founded by Wilhelm Wundt and E.B. Titchener

• Focused on the structure of the mind

• Used introspection to study consciousness

Theoretical Perspectives in Psychology

There are five primary schools of thought that have shaped modern psychology:

• Structuralism

• Functionalism

• Behaviorism

• Cognitivism

• Psychodynamic

Functionalism

• Founded by William James (1st American psychologist)

• Focused on the purpose of cognitive processes

• Influenced by theory of natural selection

Psychodynamic Perspective

• Founded by Sigmund Freud

• Studied hysteria and neurosis

Behaviorism

• Focuses on observable behaviour and ways to control it

• Used in behavioural therapy (CBT)

• B.F. Skinner: Studied principles of modifying behaviour through reinforcement and punishment (operant conditioning)

Cognitivism

• Founded by Piaget and Neisser

• Focuses on mental processes underlying thinking

• Thinking affects our behaviour; not just reward or punishment, but interpretation

Women in Psychology

• Sexual prejudice hindered women's participation

• Still only represent 28% of faculty at highest rank

• Male psychologists earn more than female counterparts

• Margaret Floy Washburn: 1st woman to receive PhD in Psychology (1894)

Scientific Thinking in Psychology

Why Can't We Always Trust Common Sense?

• Naive Realism: "Seeing is believing"

• Common sense can be misleading (e.g., the earth seems to be standing still but is rotating at 30 km/sec)

• Snap judgments based on facial traits are only 65% accurate in determining sexual orientation

Scientific Method

The scientific method involves collecting observations, developing theories, and making predictions.

• Identify questions of interest

• Formulate explanations

• Carry out research to support/refute

Scientific Theory

• Explanation for a large number of findings in the natural world

• Generates predictions (hypotheses)

Critical Thinking and Biases

Bias Awareness

• The best scientists are aware of their biases

Confirmation Bias

• Tendency to seek out evidence that supports our hypothesis

• Neglecting or ignoring contrary evidence

• Example: Police evidence matching

Belief Perseverance

• Tendency to stick to our initial belief even when evidence is contradictory

• "Don't confuse me with facts" bias

Real-Life Examples of Biases

• Shaping our behaviour

• Stereotyping

• Medical self-diagnosis

• Relationship conflicts

• Product reviews

Pseudoscience and Scientific Skepticism

• Use of pseudoscience (e.g., energy therapies)

• Lack of self-correction

• Extraordinary claims without extraordinary evidence

Patternicity

• Tendency to detect meaningful patterns in random stimuli

Terror Management Theory

• We experience anxiety because we are aware that death is inevitable but unpredictable

• We manage this anxiety by seeking worldviews that provide meaning, purpose, and continuity

• The theory is tested by manipulating mortality salience

Antidote for Pseudoscience

• Think scientifically

• Separate science from pseudoscience

• Avoid common logical fallacies

Common Logical Fallacies

• Emotion reasoning fallacy: Using emotions rather than evidence

• Bandwagon fallacy: Lots of people believe it so it must be true

Dangers of Pseudoscience

• Opportunity cost: Investing time, energy, effort into questionable treatment

• Direct harm: Sometimes do direct harm to those who receive them

• Blocks critical thinking

Critical Thinking

• Set of skills to evaluate claims open-mindedly and carefully

• Key to scientific method

• Thinking critically, evaluating claims scientifically, not intuitive, requires overcoming biases

Types of Psychological Research

Experimental Psychology

• Research focused

Applied Psychology

• Utilizes research in everyday life to solve real-world problems

Major Areas of Psychology

• Child development psychology

• Industrial/Organizational (I/O) psychology

• Sports psychology

• Social/personality psychology

• Forensic psychology

• Other specialized fields

How Psychology Affects Our Lives

Basic Research

• Examines how the mind works

Applied Research

• Utilizes research to solve real-world problems

Summary Table: Major Psychological Perspectives

Perspective	Key Figures	Main Focus	Methods
Structuralism	Wilhelm Wundt, E.B. Titchener	Structure of the mind	Introspection
Functionalism	William James	Purpose of mental processes	Observation, introspection
Behaviorism	B.F. Skinner	Observable behaviour	Experiments, conditioning
Cognitivism	Jean Piaget, Ulric Neisser	Mental processes	Experiments, interpretation
Psychodynamic	Sigmund Freud	Unconscious processes	Case studies, psychoanalysis

Key Equations and Concepts

• Operant Conditioning (Skinner):

$\text{Behaviour} \xrightarrow{\text{Reinforcement/Punishment}} \text{Change in Behaviour}$

• Scientific Method Steps:

$1.\ \text{Observation} \rightarrow 2.\ \text{Theory} \rightarrow 3.\ \text{Prediction} \rightarrow 4.\ \text{Experiment} \rightarrow 5.\ \text{Conclusion}$

Additional info: Some explanations and examples have been expanded for clarity and completeness.