CBSE Class 11 Psychology — NCERT Solutions

What is Given / Asked: Define behaviour and distinguish between overt and covert behaviour with examples.

Concept Used: In psychology, behaviour refers to any action or response of an organism that can be observed, measured, or inferred.

Answer:

Behaviour is anything a person does, thinks, or feels that can be observed directly or inferred indirectly. It includes all actions, reactions, and responses of an individual to stimuli from the environment or from within the body.

Types of Behaviour:

1. Overt Behaviour: Actions that are directly observable and measurable by others.

• Examples: Walking, talking, eating, writing an exam, crying, laughing, playing a sport.

2. Covert Behaviour: Internal activities that are not directly visible to others but can be inferred through various means (e.g., self-report, physiological measures).

• Examples: Thinking, dreaming, feeling anxious, imagining, remembering a past event, experiencing hunger.

Conclusion: Both overt and covert behaviours are important subjects of study in psychology. While overt behaviours are directly accessible, covert behaviours require indirect methods such as introspection, interviews, or physiological recording to study them.

What is Given / Asked: Distinguish scientific psychology from popular (common-sense) notions of psychology.

Concept Used: Scientific psychology relies on systematic, empirical, and objective methods, whereas popular notions are based on intuition, folklore, and unverified beliefs.

Answer:

Conclusion: Scientific psychology is distinguished by its use of rigorous, systematic, and empirical methods to understand behaviour and mental processes, making it far more reliable and valid than popular notions, which are largely based on myths and unverified assumptions.

Goals of Scientific Enquiry:

The goals of scientific enquiry in psychology are as follows:

1. Description: The first goal is to describe behaviour and mental processes accurately. This involves observing and recording what happens — for example, describing how children behave in a classroom.

2. Prediction: Once behaviour is described, the next goal is to predict when and under what conditions a particular behaviour will occur. For example, predicting that students who study regularly will perform better in exams.

3. Explanation: Scientific enquiry aims to explain why a behaviour occurs — i.e., to identify the causes behind it. For example, explaining why some students experience test anxiety.

4. Control: After understanding the causes, the goal is to control or modify behaviour. For example, using relaxation techniques to reduce test anxiety.

5. Application: The knowledge generated is applied to solve real-life problems and improve human welfare. For example, applying findings about memory to design better teaching methods.

6. Understanding Subjective Meanings: Beyond the above, psychological enquiry also aims to discover and understand the subjective meanings of events as they occur in a particular context, and to reflect upon one's own behaviour and experiences.

In summary, scientific enquiry moves from describing behaviour → predicting it → explaining it → controlling it → applying the knowledge for human benefit.

Steps Involved in Conducting a Scientific Enquiry:

A psychological research follows a systematic sequence of steps:

Step 1: Conceptualising a Problem

• The researcher identifies and defines the problem to be studied.
• A hypothesis (a tentative, testable statement about the expected relationship between variables) is formulated.
• The variables to be studied are clearly defined.
• Example: "Does noise level affect concentration in students?"

Step 2: Collection of Data

• The researcher selects an appropriate method (observation, experiment, survey, case study, psychological test, etc.) to collect data.
• A sample is selected from the population.
• Data is collected systematically and objectively using the chosen method.
• Ethical guidelines (informed consent, confidentiality) are followed.

Step 3: Analysing Data

• The collected data is organised and analysed.
• Quantitative methods use statistical procedures (mean, correlation, etc.) to draw conclusions.
• Qualitative methods use narrative analysis or content analysis to interpret data.
• Patterns and relationships among variables are identified.

Step 4: Drawing and Revising Research Conclusions

• Based on the analysis, conclusions are drawn.
• The hypothesis is either supported or rejected.
• Findings are interpreted in the context of existing knowledge.
• Conclusions may be revised if new evidence emerges.
• Results are shared with the scientific community through publications.

Note: These steps are not always strictly linear; researchers may revisit earlier steps as new insights emerge.

Given / Context: We need to define development and distinguish it from growth and maturation.

Definition of Development:
Development refers to the systematic and successive changes that occur in an organism from conception to death. It is a continuous, lifelong process that involves both quantitative and qualitative changes. Development encompasses physical, cognitive, social, emotional, and moral changes across the entire life span.

Definition of Growth:
Growth refers specifically to the quantitative increase in size, height, weight, or any other measurable physical attribute. For example, an increase in a child's height from 80 cm to 100 cm is growth. Growth is largely limited to the early years of life and eventually stops.

Definition of Maturation:
Maturation refers to the biologically programmed, sequential unfolding of changes that are relatively independent of environmental experience. It is governed by genetic instructions. For example, a child begins to walk not merely because of practice but because the nervous system and muscles have matured sufficiently.

Key Differences:

Conclusion: Development is the broadest concept that includes both growth (physical increase) and maturation (biological unfolding), along with the influence of learning and experience. Growth and maturation are components that contribute to overall development.

Given / Context: We need to explain the life-span perspective on development.

Life-Span Perspective:
The life-span perspective, associated with psychologist Paul Baltes, views human development as a process that continues throughout the entire life — from conception to death. It does not restrict development to childhood or adolescence alone.

Main Features of the Life-Span Perspective:

1. Development is Lifelong: No single age period dominates development. Every stage — infancy, childhood, adolescence, adulthood, and old age — is important and contributes to the overall development of the individual.

2. Development is Multidimensional: Development occurs along multiple dimensions simultaneously — biological, cognitive, social, and emotional. For example, during adolescence, physical changes (biological), identity formation (psychological), and peer relationships (social) all occur together.

3. Development is Multidirectional: While some capacities grow (e.g., wisdom in old age), others may decline (e.g., physical speed). Development involves both gains and losses at every stage.

4. Development is Plastic: Plasticity means that development is modifiable. Many abilities can be strengthened or compensated for through training, experience, and environmental support, even in old age.

5. Development is Contextual: Individuals are embedded in contexts — historical, cultural, social, and personal. These contexts shape development. For example, a child growing up in a joint family develops differently from one in a nuclear family.

6. Development involves both Growth and Decline: At every stage, there are gains as well as losses. For instance, in late adulthood, wisdom may increase while physical strength decreases.

7. Development is Studied by Multiple Disciplines: The life-span perspective is interdisciplinary, drawing from psychology, sociology, anthropology, biology, and medicine.

Conclusion: The life-span perspective provides a comprehensive and holistic view of human development, recognising that change is continuous, complex, and influenced by multiple interacting factors throughout life.

Given/Concept: Sense organs are the gateways through which we receive information about the world, but they have several functional limitations that restrict the range and accuracy of information they can pick up.

Answer:

The functional limitations of sense organs are as follows:

1. Absolute Threshold: Every sense organ can detect a stimulus only if it reaches a minimum intensity level, called the absolute threshold. Stimuli below this threshold are not detected at all. For example, the human ear cannot hear sounds below 20 Hz or above 20,000 Hz.

2. Difference Threshold (Just Noticeable Difference – JND): Sense organs cannot detect very small differences between two stimuli. The minimum difference that can be detected is called the difference threshold or JND. Very small changes in stimulation go unnoticed.

3. Sensory Adaptation: When a stimulus is presented continuously for a long time, the sense organs gradually stop responding to it. For example, we stop noticing the smell of a room after being in it for some time. This is called sensory adaptation and it limits our ability to continuously monitor the environment.

4. Limited Range of Sensitivity: Each sense organ is sensitive only to a specific type and range of energy. For example, the eye responds only to visible light (wavelengths approximately 380–760 nm) and cannot detect X-rays, ultraviolet rays, or infrared radiation.

5. Selective Reception: Sense organs cannot process all stimuli simultaneously. They select certain stimuli and filter out others, which means some information is always lost.

6. Susceptibility to Illusions: Sense organs can be deceived under certain conditions, leading to misperceptions (illusions). This shows that the information they provide is not always accurate or veridical.

Conclusion: These limitations mean that our sensory experience of the world is always incomplete and sometimes inaccurate. The brain must supplement sensory data with prior knowledge and inference to construct a meaningful perception of reality.

What is Learning?

Learning is defined as any relatively permanent change in behaviour or behavioural potential that is produced by experience or practice (and not by maturation, fatigue, drugs, or injury).

Distinguishing Features of Learning:

1. Change in Behaviour: Learning always involves some change — it may be an improvement, a new habit, or even an undesirable behaviour.

2. Relatively Permanent: The change brought about by learning is not temporary. It persists over time (unlike changes due to fatigue or drugs).

3. Due to Experience or Practice: Learning results from interaction with the environment — through direct experience, observation, or practice. Changes due to maturation (biological growth) are NOT learning.

4. Inferred Process: Learning cannot be observed directly; it is inferred from performance (the observable behaviour). For example, we infer that a student has learned mathematics from the answers they write.

5. Differs from Performance: Performance is the actual observed behaviour, while learning is the underlying change in potential. A person may have learned something but may not always perform it (e.g., due to lack of motivation).

6. Adaptive in Nature: Learning helps the organism adapt to its environment by modifying responses based on past experience.

Conclusion: Learning is a broad, continuous process that underlies most of human and animal behaviour, enabling adaptation and growth throughout life.

Given: Three fundamental processes of memory are encoding, storage and retrieval.

Concept: Memory is not a single process but a system involving three interrelated stages.

Answer:

1. Encoding: Encoding is the first stage of memory in which incoming information is registered and converted into a form that is compatible with the memory system. It is like translating raw sensory data into a mental representation. For example, when you read a word, you may encode it visually (how it looks), acoustically (how it sounds), or semantically (what it means).

2. Storage: Storage refers to holding or retaining the encoded information in the memory system over a period of time. It is the process by which information is maintained in memory so that it can be used later. Storage can be brief (as in sensory or short-term memory) or relatively permanent (as in long-term memory).

3. Retrieval: Retrieval is the process of bringing back the stored information into conscious awareness when it is needed. It is like searching for and finding a file stored in a computer. Retrieval can be in the form of recall (reproducing information without cues), recognition (identifying information when presented), or relearning (learning previously learned material again).

Conclusion: These three processes — encoding, storage, and retrieval — work together in an interrelated manner to make memory possible. A failure at any one stage can result in forgetting.

Given / What is asked: Describe what thinking is and its essential characteristics.

Concept: Thinking is a higher-order cognitive process involving the manipulation of mental representations.

Answer:

Thinking is a complex mental process through which we manipulate information — both newly acquired and previously stored in memory. Its key features are:

1. Internal / Covert process: Thinking occurs inside the mind and cannot be directly observed; it can only be inferred from a person's behaviour or verbal reports.

2. Involves mental representations: When we think, we do not deal with real objects directly. Instead, we use:

• Mental images — internal, pictorial representations of objects or events (e.g., imagining the layout of your classroom).
• Concepts — mental categories that group objects, events, or ideas sharing common properties (e.g., the concept 'fruit').

3. Goal-directed: Most thinking is purposeful — we think in order to solve a problem, make a decision, or understand something.

4. Manipulative: Thinking involves transforming, combining, and reorganising information to produce new knowledge or solutions.

5. Types of thought processes: Simple thinking includes forming images and using concepts; complex thought processes include problem solving, reasoning, decision-making, judgment, and creative thinking.

Conclusion: In essence, thinking is the cognitive activity that allows human beings to go beyond the information immediately available to them, enabling planning, creativity, and rational behaviour.

Given / To explain: The concept of motivation.

Definition:
Motivation is the process of persistent, goal-directed behaviour that arises from certain internal or external driving forces. It energises, directs, and sustains behaviour until a goal is reached.

Key features of motivation:

1. Goal-directed: Motivated behaviour is always aimed at achieving a specific goal (e.g., studying hard to score well in an exam).
2. Persistent: The individual continues the behaviour until the goal is achieved or abandoned.
3. Driven by needs/motives: Motivation originates from needs — biological (hunger, thirst) or psychosocial (achievement, affiliation).
4. Energising: It activates and sustains behaviour.

Types of Motivation:

• Biological (Intrinsic) Motivation: Arises from innate biological needs regulated by hormones, neurotransmitters, and brain structures like the hypothalamus and limbic system. Examples: hunger, thirst, sex drive.
• Psychosocial Motivation: Arises from an individual's interaction with the social environment. Examples: need for achievement, need for affiliation, need for power, curiosity.

Conclusion:
Motivation is a dynamic internal state that initiates and guides behaviour towards satisfying a need or attaining a goal. It is central to understanding why people behave the way they do.