1.2 - PSY121

1.2 a: Know the key terminology of psychology's history.
1.2 b: Understand how various philosophical and scientific fields became major influences on psychology.
1.2 c: Apply knowledge to distinguish among different specializations in psychology.
1.2 d: Analyze how the philosophical ideas of empiricism and determinism are applied to human behavior.

Early investigations of human behavior can be traced back to ancient civilizations.
- Ancient Egyptians: Recorded observations linking brain injuries to behavioral changes through military medical practices.
- The Edwin Smith Papyrus noted that different areas of brain damage resulted in specific impairments, marking a significant historical step toward psychology's evolution.

Psychology's Interdisciplinary Nature:
- Encompasses inquiries from both philosophy and science, tackling questions about behavior influenced by environmental, genetic, and physiological factors.
- Ongoing debates about determinism versus free will in human behavior's causation.

Empiricism: A philosophy asserting that knowledge arises from sensory experience.
- Common expression: "Seeing is believing" denotes the significance of careful observation versus speculation.
Determinism: The view that all events, including human actions, are determined by previously existing causes.
- Example: Physical phenomena, such as gravity, demonstrate deterministic laws, raising questions about human thought and behavior.

Ancient Greece:
- Hippocrates developed the first personality classification scheme based on the four humors:
- Blood: Sanguine temperament, impulsive.
- Yellow bile: Choleric temperament, ambitious.
- Black bile: Melancholic temperament, self-reliant.
- Phlegm: Phlegmatic temperament, relaxed.
- Galen refined these concepts, linking humors to stable temperaments throughout life.

The Dark Ages hindered advances in psychology for numerous centuries.
Post-Scientific Revolution (1500s-1600s): Rapid advancements in physics and biology delayed significant progress in psychology, primarily due to societal resistance to materialist views on human behavior.

By the late 1800s, the zeitgeist (spirit of the times) allowed for psychological science's growth, culminating in various methodologies for studying human behavior.

Gustav Fechner: Founded psychophysics studying how physical energies relate to psychological experiences.
- Example of psychophysical research: Investigating perceived weight variations demonstrated by the sensation of added weights.
Charles Darwin: Proposed the theory of evolution via natural selection.
- Believed behaviors were adaptive traits, thus informing early psychological understanding of behavior.

Localization of Brain Function: Explored in mid-1800s through:
- Phrenology: Study tracing personality traits to bumps on the skull, gaining popularity despite lack of scientific rigor.
- Early clinical research showed brain injury correlations with specific impairments (e.g., Broca’s and Wernicke’s areas linked with language production and comprehension).

Franz Mesmer: Developed hypnosis, leading to Sigmund Freud's psychoanalysis focusing on the unconscious mind and its influence on behavior.
- Freud emphasized early life experiences shaping adult behavior, a theme prevalent in modern psychology despite criticisms of his methods.

Sir Francis Galton: Early pioneer in statistical measures of individual differences; investigated nature vs. nurture debates.
- Advocated the misconception of eugenics based on observed familial similarities.

Established as a scientific discipline around the late 1800s with Wilhelm Wundt founding the first psychology lab in 1879 at the University of Leipzig.
- Introduced introspection as a primary method for understanding consciousness.
Functionalism: Pioneered by William James, emphasizing behavior's purpose and role in adaptation through evolutionary principles.

Emergence of behaviorism focused on observable behaviors, championed by John B. Watson.
- Watson's radical behaviorism focused on behavior's predictability based on environmental stimuli without references to mental states.
Classical Conditioning by Ivan Pavlov illustrated conditioned responses through associative learning.
B.F. Skinner and Radical Behaviorism: Studied operant conditioning, emphasizing reward and punishment as pivotal behavioral determinants.

The influence of social factors was notably studied, examining how individuals behave in group settings, pioneered by Norman Triplett.
The significance of context in human behavior led to Kurt Lewin's formulation of social psychology as a function of individual traits and environmental conditions.

Reemergence of the study of mental processes in psychology led to the cognitive perspective:
- Focused on memory, perception, and higher-level thinking processes, facilitated by technological advancements.
Gestalt psychology emphasized understanding wholes rather than breaking experiences into parts.

Emerged as a counter to behaviorism and psychoanalysis, emphasizing individual uniqueness and personal growth, with key figures including Carl Rogers and Abraham Maslow advocating for human potential and fulfillment.

Advances in neuroimaging (e.g., fMRI) have enabled deeper understanding of cognitive functions and the relationship between brain activity and behavior, fostering growth in cognitive neuroscience and social neuroscience fields.

Examination of psychology of women, cross-cultural studies, indigenous perspectives, and neuroimaging explosions highlights the field's evolving nature and relevance in contemporary society.
Emphasis on positive psychology that promotes strengths and well-being.
Broader application of psychological science across various societal sectors has transformed understanding and interventions related to mental health and well-being.

Psychology's foundational trends have guided modern perspectives and practices, establishing psychology as a respected scientific discipline with diverse applications in improving human lives.
The integration of philosophical insights with empirical research continues to enrich the understanding of human behavior in complex biological and sociocultural systems.

Refer to Module 6.1 for classical conditioning details, Module 3.1 for evolutionary psychology, and Module 12.1 for psychological classifications and comparisons.