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Latest Psychology NCERT Notes, Solutions and Extra Q & A (Class 11th & 12th)
11th 12th

Class 11th Chapters
1. What Is Psychology? 2. Methods Of Enquiry In Psychology 3. Human Development
4. Sensory, Attentional And Perceptual Processes 5. Learning 6. Human Memory
7. Thinking 8. Motivation And Emotion



Chapter 1 What Is Psychology?



What Is Psychology?

Defining any field of knowledge precisely is challenging because disciplines are constantly evolving, and the range of phenomena they study is often broad. This is particularly true for psychology.

Historically, the term "psychology" was thought to originate from two Greek words: 'psyche' meaning soul or mind, and 'logos' meaning science or study. However, the field has significantly moved beyond this early focus to become a scientific discipline.

Psychology today studies processes underlying human experience and behaviour. Its scope covers phenomena at various levels:

These phenomena have both biological and social foundations. Due to this broad scope, the methods used to study them vary widely, depending on the specific aspect being investigated.

A discipline is defined by *what* it studies and, perhaps more importantly, *how* it studies. Formally, psychology is defined as the scientific study of mental processes, experiences, and behaviour in different contexts.

In its scientific approach, psychology uses systematic data collection methods borrowed from both biological and social sciences. The goal is to make sense of this data to build organised knowledge about how the mind works and how it relates to behaviour.

Let's clarify the three key terms in this definition:

Mental Processes: These are internal states of consciousness or awareness that we use when thinking, problem-solving, knowing, remembering, perceiving, or feeling. Mental processes are reflected in brain activity, but they are not identical to it, although interdependent. The mind itself does not have a physical structure or location; it emerges dynamically from our interactions and experiences, organising into a system responsible for mental processes. Psychologists study these processes to understand the mind's functioning and potentially improve our mental capacities.

Experiences: These are subjective in nature, meaning only the person undergoing the experience can be fully aware of it. Experiences are embedded within our consciousness. Psychologists study diverse experiences, from pain in illness or grief to positive feelings in joy or romantic encounters, and even altered states like those induced by meditation or drugs. Experiences are shaped by complex internal (e.g., mood) and external (e.g., social context) conditions. Understanding an experience requires analysing this interplay.

Behaviour: These are the observable or internal responses, reactions, or activities that we engage in. Behaviours can be simple (like blinking due to reflex) or complex (like deciding to watch a movie), short (a sudden reaction) or enduring (a habit). Overt behaviours are outwardly visible (e.g., running). Covert behaviours are internal (e.g., muscle tension during chess). All behaviours are associated with or triggered by stimuli, either from the environment or internal changes. Some psychologists study behaviour as a link between stimulus (S) and response (R), where both S and R can be internal or external.



Psychology As A Discipline

Psychology systematically studies behaviour, experience, and mental processes to understand and explain the mind's operation and how mental processes manifest as behaviour. Unlike everyday observations, which are influenced by personal biases, psychologists strive for systematic and verifiable explanations.

Some psychologists aim for scientific objectivity, seeking consensus on definitions and measurements. Others emphasise the subjective nature of human experience, explaining behaviour from the individual's perspective. Regardless of the approach, the goal is systematic and verifiable understanding.

Though its philosophical roots are ancient, psychology is a young science, formally tracing its beginning to 1879 with Wilhelm Wundt's first experimental laboratory in Leipzig. The nature of psychology as a science is debated, especially with emerging interdisciplinary fields.


Psychology As A Natural Science

Psychology often aligns with natural sciences by applying scientific methods. It was influenced by philosophy (like Descartes) and physics, following a hypothetico-deductive model. This model involves having a theory to explain a phenomenon, deducing a testable hypothesis from the theory, gathering empirical data to test the hypothesis, and revising the theory based on the findings. This approach seeks cause-and-effect relationships for prediction and control of behaviour.

Many psychologists use this approach to develop theories of learning, memory, attention, perception, motivation, and emotion, leading to significant progress. Psychology is also influenced by the evolutionary approach from biological sciences, used to explain behaviours like attachment and aggression based on their adaptive value.


Psychology As A Social Science

Psychology is widely recognised as a social science because it studies human behaviour within its socio-cultural contexts. Humans are not passive recipients; they are influenced by and actively shape their socio-cultural environments. Psychology as a social science focuses on humans as social beings.

The story of Ranjita and Shabnam illustrates how individuals, despite differences, are shaped by their complex social and cultural backgrounds (different family structures, interests). While there might be some predictability in how social environments relate to behaviour, individual variations and the emergence of collective behaviours (like community helpfulness during a flood) can be complex to predict using only simple principles. The story also highlights that even in crises, community responses can vary (helpfulness vs. antisocial behaviour), indicating the influence of socio-cultural context.

Thus, psychology as a social science examines human behaviour and experience focusing on individuals and communities interacting with their socio-cultural and physical environment, acknowledging multiple causes for behavioural phenomena.



Understanding Mind And Behaviour

Historically, the study of the "mind" was set aside in psychology due to difficulties in concretely defining or locating it. However, the concept has regained importance, partly due to work in neuroscience and physics.

The mind is not the same as the brain, though it cannot exist without the brain. The mind is a separate entity that emerges from dynamic organisation of experiences. This distinction is illustrated by neurological cases:

These cases suggest the mind maintains an integrity separate from specific damaged brain parts. Earlier theories proposed mind and body were parallel without interaction. Recent studies in affective neuroscience demonstrate a clear relationship and mutual influence between mind and behaviour (and the body). Positive mental states (visualisation, positive emotions) can significantly impact bodily processes. Studies have shown visualisation improving blood flow in blocked arteries and mental imagery helping treat phobias.

A new field, Psychoneuroimmunology, studies the mind's role in strengthening the immune system, further highlighting the interconnectedness of mental and physical well-being.



Popular Notions About The Discipline Of Psychology

In everyday life, people often act as amateur psychologists, offering explanations for behaviour based on common sense. We develop personal theories about human nature and predict how people might act. However, these popular notions, often based on common sense, can be misleading when compared to scientific psychological findings.

Common sense explanations are frequently based on hindsight – they are offered *after* the behaviour has occurred, explaining very little beforehand. For example, presented with conflicting common sayings like "Out of sight, out of mind" and "Distance makes the heart grow fonder," common sense uses whichever saying fits the outcome after it has happened. Scientific psychology, in contrast, seeks to identify patterns that allow for the prediction of behaviour *before* it occurs.

Scientific findings can contradict common sense. Dweck's study (1975) showed that children who experienced a mix of success and failure and were taught to attribute failure to lack of effort were more persistent than those who always succeeded on easy tasks. This goes against the common sense idea that constant success builds confidence and persistence.

Empirical studies have also debunked common beliefs, such as men being more intelligent than women or women causing more accidents. Similarly, while common sense suggests audience presence hinders performance, psychological studies show it can enhance performance if the task is well-practiced.

Psychology, as a science, differs from fields like astrology or palmistry because it systematically examines propositions based on data to develop principles about human behaviour and psychological phenomena.



Evolution Of Psychology

Modern psychology has a relatively short history, heavily influenced by developments in the West, but originated from ancient philosophical inquiries into the mind and human consciousness. The formal beginning is marked by Wilhelm Wundt establishing the first experimental psychology laboratory in Leipzig, Germany, in 1879.

These early schools provided diverse perspectives, each with strengths and weaknesses. Later, aspects of structuralism and Gestalt psychology contributed to the rise of the cognitive perspective, focusing on mental processes involved in 'knowing' (thinking, memory, problem-solving, etc.). Cognitive psychology often views the mind as an information-processing system.

Modern cognitive psychology includes constructivism, the view that humans actively build their minds through interaction with the world. Piaget's theory of child development is an example. Vygotsky extended this to socio-cultural constructivism, arguing the mind is shaped by social and cultural processes through interaction with adults.


Some Interesting Landmarks in the Evolution of Modern Psychology


Development Of Psychology In India

The Indian philosophical tradition has a rich history of exploring mental processes, consciousness, and mind-body relations, but this tradition has not significantly shaped modern psychology in India, which has been primarily influenced by Western psychology. However, there are growing attempts to integrate traditional Indian perspectives with modern scientific studies.

Modern psychology in India formally began at the Department of Philosophy, Calcutta University, in 1915, with the introduction of experimental psychology and the establishment of the first laboratory. Calcutta University later started dedicated Departments of Psychology (1916) and Applied Psychology (1938). Pioneers like Dr. N.N. Sengupta (trained in experimental psychology) and Professor G. Bose (influenced by Freudian psychoanalysis, who founded the Indian Psychoanalytical Association in 1922) played key roles. Mysore and Patna Universities also became early centres.

Durganand Sinha's 1986 book outlines four phases of modern Indian psychology as a social science:

  1. Till Independence: Emphasised experimental, psychoanalytic, and testing approaches, mirroring Western developments.
  2. Till 1960s: Expansion into various branches, with psychologists attempting to link Western concepts to the Indian context.
  3. Post-1960s: Shift towards problem-oriented research, focusing on addressing Indian societal problems, recognising the limitations of solely relying on Western psychology.
  4. Late 1970s onwards: Phase of indigenisation, seeking culturally and socially relevant frameworks, including approaches based on traditional Indian knowledge systems found in ancient texts.

Contemporary Indian psychology is increasingly contextual, rooted in the socio-cultural environment. It also involves interfaces with neurobiological and health sciences. Psychologists in India are now applied in diverse professional fields, including clinical practice, corporate HRD, advertising, sports, development, and IT.



Branches Of Psychology

Psychology has developed into numerous specialised fields:



Psychology And Other Disciplines

Psychology is highly interdisciplinary, overlapping with numerous fields that study human functioning. Knowledge of psychology is relevant to any discipline dealing with people, and psychology benefits from insights from other fields. This has led to increased collaboration across science, social science, and humanities.

Diagram showing Psychology at the centre connected to various other disciplines

(Figure 1.1 illustrates Psychology's central position, connected to a wide range of other disciplines, signifying its relevance and interactions across different domains of knowledge.)

Major disciplines linked to psychology:

In essence, psychology sits at the crossroads of many fields, providing crucial insights into human functioning for diverse areas of knowledge and application.



Psychology In Everyday Life

Beyond theoretical understanding, psychology offers practical solutions to a wide range of problems – personal (family conflicts, child issues), interpersonal (lack of communication), group/community (terrorism, isolation), national, or international (education, health, environment, social justice, conflict, poverty, degradation).

While these problems may require broader reforms, psychological interventions at the individual level are often needed to facilitate change. Many problems stem from unhealthy thinking, negative attitudes, and undesirable behaviours. Psychological analysis provides deeper understanding and effective solutions.

The potential of psychology in solving life's problems is increasingly recognised, visible through media representation of counsellors and therapists discussing various issues. Psychologists work in diverse settings (schools, hospitals, industries, prisons, businesses, military, private practice), helping people address problems.

Knowledge of psychology is also personally relevant. Understanding psychological principles and methods helps in analysing and understanding oneself and one's relationships. It aids in developing positive habits (study techniques), improving learning and memory, making better decisions for personal/interpersonal problems, and managing stress (e.g., exam stress).

Thus, psychology is rewarding both personally (for self-understanding and development) and socially (for contributing to solving societal problems and improving quality of life).



Key Terms

Behaviour, Behaviourism, Cognition, Cognitive approach, Consciousness, Constructivism, Developmental psychology, Functionalism, Gestalt, Gestalt psychology, Humanistic approach, Introspection, Mind, Neuropsychology, Physiological psychology, Psychoanalysis, Sociology, Stimulus, Structuralism



Summary

Psychology is a modern discipline focused on understanding complex mental processes, experiences, and behaviour in context. It is viewed as both a natural and a social science.

Major historical schools include structuralism, functionalism, behaviourism, Gestalt psychology, psychoanalysis, humanistic psychology, and cognitive psychology.

Contemporary psychology is diverse, with multiple approaches explaining behaviour at different levels. These approaches offer valuable insights and are not mutually exclusive.

Psychologists specialise in various fields, developing theories and solving problems in specific domains like cognitive, biological, health, developmental, social, educational, clinical, environmental, industrial/organisational, and sports psychology.

Psychology is interdisciplinary, collaborating with social sciences (economics, political science, sociology), biosciences (neurology, physiology, medicine), mass communication, and arts. These collaborations lead to fruitful research and applications.

Psychology contributes not just theoretical knowledge but also practical solutions to problems at individual, group, and societal levels. Psychologists work in diverse settings like schools, hospitals, industries, prisons, and private practice.



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