Comprehensive Notes: The Origins and Perspectives of Psychology

Definition of psychology

• Psychology defined as the scientific study of behavior and mental processes (the mind).
  • Behavior: anything an organism can do; usually considered observable.
  • Mental processes (the mind): thinking, perceiving, reasoning, and anything that occurs within the individual.

Important points of the definition

• Psychology uses systematic observation to develop theories about what people and animals do.
• Emphasizes both observable actions and internal mental activities.

Four goals of psychology

• Describe behavior and mental processes.
• Explain why they occur.
• Predict when they will occur.
• Change or influence behavior and mental processes to improve outcomes.
• These goals are pursued in part by using the scientific method.

The Scientific Method in psychology

• A method of collecting data in a systematic, observable, and objective manner (not based on subjective opinions).
• Requires repeatable observations and evidence.

Three major ideas of the scientific method

• Theory: a set of general concepts, principles, ideas, etc., that organizes, describes, explains, predicts, and simplifies data.
  • Provides a framework for future research and often forms the basis for hypotheses.
  • A theory is supported (or not) by facts, but is not deemed “proved.”
• Hypothesis: a specific, testable question, usually derived from a theory.
  • Hypotheses can be accepted or rejected; they are correct or incorrect for a given data set.
• Replication: obtaining the same or similar results more than once, preferably by a different researcher.

Using the scientific method in psychology (summary steps)

• Formulate a research question (often developed after reviewing relevant literature).
• State the question in the form of a hypothesis.
• Test the hypothesis (experimental or descriptive studies).
• Draw conclusions.
• Make findings available.
• Develop or modify theory based on results.

One final point about the scientific method

• Healthy skepticism is essential. Critical thinking requires looking for alternative, simpler explanations before accepting something as true.
• Science aims to disprove ideas (null hypothesis approach) rather than to prove them correct.
• Null hypothesis example: $H<em>0: \text{no effect}$ vs. $H</em>1: \text{there is an effect}$

Match the term to its explanation (from the slide)

1. theory → C. the “big picture”
2. hypothesis → E. testable statement
3. scientific method → A. systematic observation
4. replication → D. same findings over time or by a different researcher
5. skepticism → B. doubt

The History of Psychology

• Psychology, like other disciplines, is shaped by current cultural mores and technologies. Understanding present psychology requires understanding its past.

Roots of psychology

• Developed from a combination of philosophy and physiology.

The discipline’s evolution (rough timeline)

• Circa 1900: study of consciousness
• Circa 1920: study of behavior
• Circa 1960: study of mental processes
• Circa 1980: study of behavior and mental processes

The official start of psychology

• Wilhelm Wundt (1832–1920): established the first psychological laboratory; published in 1879 in Leipzig, Germany.
• Used speed-of-reaction experiments.

Structuralism (Edward Titchener, 1867–1927)

• Aimed to determine what consciousness is by identifying its basic elements.
• Method: introspection (self-report of experience).
• Problems:
  • The number of basic elements ended up in the tens of thousands, making the approach impractical.
  • Titchener was the final authority on what counted as an element of consciousness.
  • Self-report data can be unreliable.
• Structuralism provided a model against which psychology rebelled.

Functionalism (William James, 1842–1910)

• Emerged in the 1900s in the USA as a reaction to structuralism.
• Focus: why people are conscious; adaptive functions of consciousness.
• Key idea: consciousness cannot be understood merely by breaking it into parts.
• Related concepts: "stream of consciousness"—continuous, not easily separable into discrete elements.

Gestalt Psychology (Max Wertheimer, Wolfgang Kohler, Kurt Koffka, early 1900s in Germany)

• Interested in perceptual experiences and illusions.
• Core principle: the whole is different from the sum of its parts (the gestalt).
• Notable concepts: apparent motion and perceptual organization.
• Key terms:
  • Phi phenomenon: apparent motion despite no actual movement.
  • Wertheimer–Koffka Ring and related perceptual demonstrations.

Behaviorism (John B. Watson, 1878–1958)

• Started in the 1920s in the USA.
• Argued psychology should be a science of observable behavior, not subjective experience.
• Emphasized S–R (stimulus–response) psychology and the idea of the “black box” (ignoring internal mental states).
• For ~40 years, it was the dominant school in the USA.
• Key concept: stimulus and response can be measured; internal mental states are not directly accessible.

Summary of early schools (for quick review)

• Wundt: Father of psychology; 1879; emphasis on experimental methods.
• Structuralism (Titchener): Elements of consciousness; introspection.
• Functionalism (James): Focus on purpose and function of consciousness; stream of consciousness.
• Gestalt: The whole is not reducible to parts; perceptual illusions and organization.
• Behaviorism (Watson): Science of observable behavior; S–R model; black-box stance.

Psychoanalysis (Sigmund Freud, 1856–1939)

• Emerged by the 1920s in Vienna, Austria.
• Emphasized childhood experiences and unconscious conflicts in shaping personality and behavior.
• Critique: not primarily a science of psychology; more clinical and theoretical.

Humanistic Psychology (Carl Rogers, 1902–1987; Abraham Maslow, 1908–1970)

• Emerged in the 1960s in the USA.
• Clinical perspective; emphasizes human goodness and innate drive toward self-actualization and growth.
• Key concept: Actualizing tendency (self-actualization).

Cognitive Psychology (late 1950s–1960s; Ulric Neisser)

• Emerged during the cognitive revolution; supplanted behaviorism as the dominant paradigm in the USA.
• Focus: thought processes—memory, expertise, decision-making, language, reasoning.
• Often uses a computer analogy (information processing) and cognitive neuroscience concepts.

Distinctions: learning vs cognition

• Learning: refers to behavior (what you can do).
• Cognition: refers to thought processes (mental activities).

Biological and related perspectives

• Biological psychology (neuroscience, biopsychology, etc.): re-emerged in the 1980s with advances in brain research; focuses on the nervous system and how it influences behavior. Associated with Donald O. Hebb.
• Evolutionary psychology: investigates natural selection, adaptation, and evolution of behavior; explains behaviors by survival/reproductive value. Associated with David Buss.
• Cultural psychology: emerged in the 1980s; emphasizes the cultural context of behavior; how culture shapes interpretation of behavior. Associated with Jerome Bruner.

Current perspectives in psychology

• Contemporary psychology comprises multiple perspectives, with specialized subfields that often cut across theoretical boundaries.
• Specializations (examples): Developmental; Social; Personality; Experimental; Clinical & Counseling; Educational & School; Industrial/Organizational; Engineering (human factors); Health; Positive; Forensic; Artificial Intelligence & Connectionism.

Psychology as a discipline

• The American Psychological Association (APA) has over 50 divisions.

Psychology as a profession: typical workplaces

• Academia (colleges and universities).
• Clinical settings (private practice).
• Business and government.
• Elementary and secondary schools.
• Software/hardware development (e.g., Apple/Oculus).
• Military applications.

What the different professional roles mean (typical credentials and scope)

• Clinical Psychologist: usually has a Ph.D. (Doctorate of Philosophy), a Psy.D. (Doctorate of Psychology), or an Ed.D. (Doctorate of Education); specialized in treating psychological disorders.
  • Typically cannot prescribe medications in most states; there are current exceptions in a few places (e.g., with certain licenses or settings).
  • Exceptions mentioned: Louisiana, New Mexico, Illinois, Iowa, and the VA hospitals in Washington, D.C. (current exceptions vary by jurisdiction and policy).
• Psychiatrist: has an M.D. (Doctorate of Medicine) with specialized training in psychiatry; CAN prescribe medications.
• Psychoanalyst: usually a psychiatrist with additional specialization in psychoanalysis (Freudian principles).
• Social Worker: typically an M.S.W. (Master of Social Work); may obtain a doctorate in social work (D.S.W.) or specialize in fields such as marriage, family, and child counseling.
• Counselor: typically an M.A. (Master of Arts) in counseling; works with marriage/family counseling, everyday adjustment difficulties, substance abuse, and/or career issues.

Match the Perspective of Psychology to the Appropriate Term (from the exercises)

• 1. Behaviorism → D. observable behaviors
• 2. Functionalism → G. stream of consciousness
• 3. Gestalt → H. phi-phenomenon
• 4. Structuralism → F. elements of consciousness
• 5. Cognitive → E. thought processes
• 6. Cultural → B. influence of time and place
• 7. Biological → C. nervous system
• 8. Psychoanalytic → A. unconscious

Notable terms and phenomena mentioned

• S–R psychology (stimulus–response): key framing of behaviorism; diagram often summarized as Stimulus → Organism → Response.
• Black-box psychology: term used to describe focusing only on observable inputs and outputs, without speculating about internal mental states.
• Phi-phenomenon: apparent motion when two stimuli are presented in sequence, creating the perception of motion.
• Thatcher illusion: visual illusion related to facial perception (referenced as an example of perceptual psychology).
• The Wertheimer–Koffka Ring: demonstration related to Gestalt perceptual organization (perception of motion/contours).
• The “ring” and perceptual demonstrations illustrate holistic processing emphasized by Gestalt psychology.

Quick connections to broader themes

• The progression from consciousness-focused approaches (1900s) to behavior-centric (early to mid-20th century) to cognitive and neurobiological approaches reflects evolving methods and technologies.
• Each major school offered a partial explanation of behavior, and contemporary psychology often integrates multiple perspectives to address complex real-world questions.
• Ethical, philosophical, and practical implications: debates over what counts as evidence; limits of introspection; the value of clinically oriented perspectives (psychoanalysis vs. humanistic vs. cognitive); the role of culture in shaping behavior; and the potential for misinterpretation of cases or biases in data collection.

LaTeX references (selected)

• Null hypothesis example: $H<em>0: \text{no effect}$, $H</em>1: \text{there is an effect}$
• Other math/notation used in this material includes standard S–R notation and simple logical formulations in theory-building contexts.