Notes on Evolution and Contemporary Approaches in Psychology

Evolution and Darwin

• Harvard, not Radcliffe; exploration of evolution and natural selection to explain why certain traits persist in populations.
• Giraffes as an example: long necks help reach food; short-necked giraffes would have struggled to access nourishment and survive, so evolution favours longer necks over generations.
• Survival of the fittest: the term was coined by Herbert Spencer, not Charles Darwin, though it’s commonly attributed to Darwin in popular usage.
• Functionalism (American psychology) emphasizes the functions of genes and physiological/mental processes and asks why these traits remain—what usefulness they provide for survival and adaptation.
• In humans, certain brain functions and physiological processes are passed on genetically and retained because they are useful for dealing with the environment; this ties into the functionalist perspective.
• Historical perspective: psychology’s development involved crossing from European roots to American schools of thought; understanding this helps contextualize contemporary approaches.
• Questions and quick review: how evolution theory and natural selection apply to humans and other species; differences between functionalist views and other schools.

Contemporary Approaches to Psychology

• Psychology as a science with data-driven methods; it uses both molecular and molar levels of analysis.
• Three levels of analysis (as introduced in the course material): molecular and molar, among others (the instructor notes three levels).
• Historical context and milestones:
  • Modern psychology began in $1879$ when Wilhelm Wundt founded the first experimental psychology laboratory in Germany.
  • The first American psychology laboratory was founded in $1883$ at Johns Hopkins University by G. Stanley Hall.
  • Hall introduced Sigmund Freud to the American public by translating Freud’s general introduction to psychoanalysis.
  • In $1890$, William James published Principles of Psychology, a foundational text that covered emotion, the self, religion, and streams of conscious thought; James was a professor at Harvard and studied how humans interact with their environment.
• Wundtian vs Jamesian perspectives: early German examination of sensation, perception, psychophysics, conditioning, memory contrasted with William James’s broader exploration of consciousness and human experience.
• The seven contemporary approaches to psychology (to be used across chapters):
  1) Biological (neuroscience) 2) Behavioral 3) Psychodynamic 4) Humanistic 5) Cognitive 6) Evolutionary 7) Sociocultural
• The course materials encourage adopting multiple perspectives and a variety of research approaches due to the brain, mind, and behavior’s complexity.
• The instructor emphasizes that psychology is a science and that understanding human nature depends on understanding how we know it; students should become sophisticated consumers of research.
• Think about it question: how did the Germanic roots of psychology come to influence American functionalism? Answer hints: the combination of a textbook title and key figures (eg, Principles of Psychology by William James; Sigmund Freud’s introduction to psychoanalysis via G. Stanley Hall).
• Historical note: Freud’s introduction to America and the transfer of European psychology to the U.S. created cross-cultural and methodological exchanges that shaped early American psychology.

The Seven Contemporary Approaches (Definitions and Key Points)

• There are seven contemporary approaches to psychology; each chapter in the textbook is typically organized around one approach.
• The seven approaches (with core focus):
  • Biological: body, brain, nervous system; physiology as a core lens; neuroscience as the study of structure, function, development, genetics, and biochemistry of the nervous system; emphasis on brain imaging and medical technologies to understand behavior and mental processes; the brain as the CPU of the body.
  • Behavioral: observable behavior and environmental determinants; behavior is what can be seen and measured; sense gates (eyes, ears, nose, tongue, skin) and environmental stimuli shape responses; Pavlov, Watson, Skinner as foundational figures; examples include reflex actions (Pavlov’s salivation) and operant conditioning (Skinner).
  • Psychodynamic: unconscious thoughts drive behavior; Freud’s legacy; focus on unresolved conflicts, early childhood experiences, and sexual/aggressive impulses; psychoanalysis as a method to uncover unconscious content.
  • Humanistic: focus on growth, potential, and self-actualization; Maslow’s hierarchy of needs with physiological needs at the base and self-actualization at the top; Carl Rogers emphasized client-centered therapy and personal growth through supportive relationships and self-direction; view humans as capable of making free choices and pursuing meaningful goals.
  • Cognitive: focus on mental processes and information processing; cognition as computer-like processing of input, storage, retrieval, and retrieval for action; attention, perception, memory, problem solving, and processing speed are key topics; how interpretation of information affects behavior.
  • Evolutionary: origin of behavior through evolution, adaptation, reproduction, and natural selection; not only humans but across species; notable figures include David Buss; Jane Goodall’s work with chimpanzees illustrates evolved behavioral tendencies and tool use in primates (grass as tools, stones as hammers).
  • Sociocultural: behavior is shaped by social and cultural contexts; understanding cultural context is essential for interpreting behavior; cross-cultural differences in norms (eg, humor, public behavior, driving); Lev Vygotsky’s sociocultural theory informs development and learning through social interaction.

Careers in Psychology

• With an undergraduate degree: broad versatility across fields such as human resources, management consulting, advertising, education, and more.
• With graduate degrees: many become clinical psychologists who diagnose and treat mental illness, often working closely with medical settings; typically do not prescribe medications (contrast with psychiatrists, who are medical doctors and can prescribe).
• Other workplaces and specializations: sports psychology, forensic psychology, community psychology, health psychology, sensation and perception, cognitive psychology, developmental psychology, social psychology, industrial-organizational psychology, among others.
• Recommendations: review the chapter for full list and details; additional chapters will build on these foundations.

Administrative Notes and Tasks

• Course logistics: Monday is Labor Day; Clemson campus is closed; Friday begins Chapter 2 with a section on the scientist method in psychology.
• Reading assignments: pages 24 to 30; focus on Connect activities and topical outlines available in Canvas under Modules.
• The instructor will cover the seven approaches, plus reading and study strategies in upcoming sessions.