Comprehensive Study Notes on Theoretical Perspectives in Psychology

The Concept of Paradigms and Perspectives in Psychology

• The Philosophy of Science and Thomas Kuhn (1970): Kuhn studied the history of science and identified that knowledge does not progress simply by accumulating facts. Instead, it evolves through the development of paradigms.

• Definition of a Paradigm: A broad system of theoretical assumptions used by a scientific community to make sense of a specific domain of study.

• Three Components of a Paradigm:

  • Theoretical Assertions: A set of models or abstract pictures of the object of study (e.g., chemists' models of atoms/molecules).

  • Shared Metaphors: Comparisons of the subject to something easily understood (e.g., "the mind is like a computer").

  • Agreed-upon Methods: Validated procedures that produce useful data (e.g., astronomers using telescopes).

• Psychology's Status: Unlike natural sciences like physics or biology, psychology lacks a single unified paradigm. It is currently splintered into several perspectives, which are schools of thought that offer sometimes competing and sometimes complementary points of view.

The Psychodynamic Perspective: Mental Forces and the Unconscious

• Origins and Sigmund Freud ($1856\text{--}1939$): Developed psychoanalysis, a theory of mental life and an approach to treating psychological disorders. The perspective focuses on psychodynamics, or the dynamic interplay of mental forces.

• Three Key Premises:

  • Actions are determined by the connection of thoughts, feelings, and wishes in the mind.

  • Many mental events occur outside of conscious awareness (unconscious).

  • Mental processes may conflict, leading to compromises among competing motives.

• The Iceberg Metaphor: Conscious awareness is the visible tip of the iceberg, while the vast bulk of mental forces lies out of sight beneath the water.

• Unconscious Motives Example: Freud suggested that "morbid curiosity" at a traffic accident scene satisfies unconscious excitement even if the individual denies such socially unacceptable feelings.

• Case Study Example (The Economics Student): A student failed to hand in assignments despite wanting success. Analysis revealed an unconscious association between success and family discomfort, as her traditional family expected girls to marry rather than outshine brothers.

• Methods and Data:

  • Relies heavily on the case study method, involving in-depth observation of a small number of people.

  • Involves interpreting meanings from dreams, fantasies, posture, and behavior toward the therapist.

• Westen’s Five Key Propositions ($1999$):

  1. Personality begins in childhood; early experiences shape later social relationships.

  2. Mental representations of self and others guide interactions and affect psychopathology.

  3. Mental processes operate in parallel, allowing for conflicting feelings and compromises.

  4. Development involves regulating impulses and moving from dependence to independence.

  5. Much of mental life is unconscious.

• Clinical Effectiveness (Gaskin, 2014): Research indicates positive long-term outcomes for mood disorders, anxiety, sexual dysfunction, and personality disorders. Long-term therapy ($\ge 1\,\text{year}$) is often more effective for complex disorders.

• Criticisms: John B. Watson referred to it as "voodooism." Criticisms include a lack of scientific grounding, violation of the falsifiability criterion, and reliance on retrospective accounts.

The Behaviourist Perspective: Environmental Control and Learning

• Core Focus: Changes in behavior based on experience. It emphasizes the relationship between external (environmental) stimuli and observable behaviors.

• Origins:

  • Ivan Pavlov ($1849\text{--}1936$): Discovered classical conditioning accidentally while studying dog digestion; dogs salivated at sounds associated with food.

  • John B. Watson ($1878\text{--}1958$): A pioneer of American behaviorism who viewed mental events as outside the scope of science.

  • B. F. Skinner ($1904\text{--}1990$): Developed behaviorism into a full perspective, arguing there is no place for a "mind" or "self" in scientific analysis.

• The Concept of Tabula Rasa: John Locke ($1632\text{--}1704$) proposed the mind is a "blank slate" at birth. Watson famously claimed he could take $12$ healthy infants and turn them into any specialist (doctor, thief) regardless of innate talent by controlling their environment.

• Metaphors and Models:

  • Machine Metaphor: Humans and animals are like machines responding to buttons/inputs.

  • The "Black Box": The mind is a box where inputs enter and outputs (responses) exit, but the internal mechanisms are unobservable and thus irrelevant to scientific data.

• Methods and Data:

  • Experimental Method: Framing hypotheses and testing them in controlled laboratory settings.

  • T-Maze Example: A rat is rewarded with food for turning left. Over several trials, the reward reinforces the behavior, making it faster.

• Key Contributions:

  • Behaviour Follows Its Consequences: The insight that rewards (reinforcement) increase and punishments decrease behavior likelihood.

  • Empiricism: The belief that systematic observation and experimentation are the only paths to scientific knowledge.

The Humanistic Perspective: Self-Actualisation and Uniqueness

• Core Focus: The uniqueness of the individual and the innate drive toward self-actualisation (reaching one's full potential).

• Key Figures: Abraham Maslow ($1908\text{--}1970$) and Carl Rogers ($1902\text{--}1987$).

• Origins: Emerged in the $1950\text{s}$ and $1960\text{s}$ as an alternative to the perceived pessimism of psychoanalysis and the mechanical nature of behaviorism.

• Key Beliefs: Humans are innately good, possess free will, and will choose adaptive, goal-directed behaviors if given the opportunity.

• The "Milk Bottle" Metaphor: Life is like a bottle of milk where the "cream always rises to the top."

• Phenomenology: The perspective focuses on the individual's subjective experience and unique frame of reference.

• Therapeutic Approach: Person-centered, emphasizing empathy, warmth, and respect for the individual's freedom to choose. Problems arise from discrepancies between the self-concept and the ideal self.

The Cognitive Perspective: Information Processing

• The Cognitive Revolution: Over the past $30\,\text{years}$, psychology shifted toward the study of cognition (thought).

• Core Focus: How people perceive, process, and retrieve information.

• Roots: Wilhelm Wundt’s experiments on attention; Gestalt psychology’s focus on organizing sensory info into meaningful units.

• The Computer Metaphor: Thinking is seen as information processing. The environment provides inputs, which are transformed by mental "programs" and stored as memory before resulting in output.

• Methods and Data:

  • Experimental Inference: Using procedures to infer mental processes.

  • Reaction Time: Measured in milliseconds ($\text{msec}$). Response time is used as a proxy for memory retrieval or scanning speed.

  • Memory Study (Cave, 1997): Participants viewed $100$ drawings. After $48\,\text{weeks}$, they were significantly faster at naming "old" pictures than "new" ones, even if they didn't consciously remember seeing them.

  • Memory Scanning Hypothesis (Sternberg, 1975): Participants take longer to recognize a word is missing from a longer list ($\text{List A}$) than a shorter list ($\text{List B}$), implying sequential mental scanning.

• Modern Metaphor (Brain as Mind): The mind is viewed as a network of brain cells; concepts like "bird" involve specific neural activation patterns.

The Evolutionary Perspective: Adaptation and Natural Selection

• Core Focus: Many behavioral tendencies evolved because they aided survival and the rearing of offspring. Understanding behavior requires insight into its evolution.

• Origins and Charles Darwin (1859): Darwin proposed natural selection, where natural forces select adaptive traits (characteristics helping survival) to be passed to offspring.

• The Peppered Moth Example: In industrial England, darker-colored moths predominated over light-colored ones because soot-covered trees provided better camouflage for darker varieties, allowing them to evade predators and reproduce.

• Key Concepts:

  • Reproductive Success: The capacity to survive and produce offspring.

  • Inclusive Fitness: Influencing the reproductive success of genetically related individuals (kin).

  • Degree of Relatedness: Natural selection favors animals whose concern for kin is proportional to biological relatedness ($\text{siblings} = \frac{1}{2}$ share, $\text{cousins} = \frac{1}{8}$ share).

• Sociobiology and Ethology: Ethology studies animal behavior (e.g., Konrad Lorenz and the jackdaws); sociobiology ($E. O. Wilson, 1975$) applies this to human social behavior.

• Grandparental Investment Hypothesis (DeKay, 1998): Due to paternity uncertainty, maternal grandmothers (who are most certain of genetic links) invest the most time and resources, while paternal grandfathers (least certain) invest the least. Studies in the US, Germany, and Canada confirmed this pattern.

• Hobbesian Metaphor: Humans are seen as being in competition for survival, sexual access, and resources.

Questions & Discussion

• Integration of Perspectives: To what extent has integration between the different theoretical perspectives occurred?

• Behaviourism vs. Cognition: What are the benefits of an approach that accepts behaviorist principles (reinforcement) but emphasizes thought processes (cognition) in learning?

• Homophobia and Psychodynamics: Experimental research (Adams, Wright, & Lohr, 1996) found homophobic men showed more sexual arousal to photos of homosexual intercourse than non-homophobic peers. A psychodynamic explanation might suggest they are using defense mechanisms to manage conflicting unconscious desires.

• Environmental Conditioning vs. Cognitive Interpretation:

  • Behaviorist view: A child avoids stealing because of a history of punishment ($\text{consequences}$).

  • Cognitive view: A child avoids stealing because they have mentally categorized the action as "wrong" based on processed information and abstract concepts of morality.

• Instinct in Childcare: Is taking care of young instinctive? Evolutionists say yes (bond survival); behaviorists would look for the rewards or learning history associated with the caretaking behavior.