Introduction to Modern Psychology and Classical Psychological Schools

Lexical Evolution and the Modern Definition of Psychology

Psychology has undergone a significant transformation from its original etymological roots to its current status as a formal science. Etymologically, the term is derived from two Greek words: "psyche," meaning soul, and "logos," meaning study. Consequently, the literal historical definition of psychology was the "study of the soul." However, in the modern scientific era, the definition has shifted to be more empirical and comprehensive. Psychology is currently defined as the scientific study of both behavior and mental processes. Conduct or behavior refers to observable actions—those things that can be seen by an outside observer. In contrast, mental processes refer to internal phenomena that are not directly visible, such as perception, memory, and thoughts.

The Three Dimensions of Mental Processes

Mental processes represent the core object of study within psychology and are categorized into three distinct types: cognitive, affective, and conative-volitional. Each category plays a specific role in how an individual interacts with the world and directs their actions.

Cognitive processes are those functions that allow an individual to know and comprehend reality. These include perception, which involves interpreting sensory information; memory, which involves the storage and retrieval of information; intelligence, the capacity for logic and problem-solving; and language, the tool for communication and conceptual thought.

Affective processes reflect the relationship between the subject and their environment. These reflect the internal state of the individual in response to external stimuli. Primary examples of affective processes include emotions, which are intense and short-lived; feelings, which are more stable and long-lasting; and passions, which represent deep and powerful inclinations toward specific objects or activities.

Conative-Volitional processes are the functions that direct an individual's conduct toward a specific goal or end-state. This category focuses on the "why" and the drive behind actions. Key examples include motivation, which provides the impetus for behavior, and will, which represents the conscious decision and effort to act or refrain from acting.

Major Classical Schools of Psychology

The field of psychology has been shaped by several influential schools of thought, each defined by specific representatives, objects of study, and core philosophies. These schools provided the foundational frameworks for understanding the human mind and behavior.

Psychoanalysis was founded by Sigmund Freud. This school focuses on the unconscious as its primary object of study, exploring the hidden parts of the mind that influence behavior without the individual's awareness. A central tenet of Psychoanalysis is the phrase "Childhood is destiny," which asserts that early childhood experiences are the primary determinants of adult personality and psychological health.

Behaviorism is represented by prominent figures such as J. Watson and B.F. Skinner. Unlike psychoanalysis, behaviorism rejects the study of the invisible mind in favor of observable behavior. This school posits that the environment is the primary factor in development, famously captured by the phrase "The environment molds us." In this view, human actions are seen as responses to external stimuli rather than the product of internal drives.

Humanism, associated with Abraham Maslow, shifts the focus toward human potential and the positive aspects of the human experience. Rather than focusing on pathology or simple responses to the environment, humanism seeks to understand how individuals can achieve their highest potential. Its central goal is self-actualization, emphasizing the inherent drive of every human being to grow and find fulfillment.

Cognitivism was pioneered by Jean Piaget and centers its study on information processing. This school uses the computer metaphor to describe human mental functions, summarized by the phrase "We are like computers." It investigates the complex internal mechanisms of how we receive, process, store, and retrieve information, viewing the human mind as an active processor of data rather than a passive recipient of environmental influence.