The influence of heredity and environment is an important topic in educational psychology. It helps us understand how children develop their physical characteristics, intelligence, personality, temperament, behaviour, and learning abilities. Human development is influenced by two major factors: heredity and environment. Heredity provides biological characteristics and potential, whereas the environment shapes these characteristics through education, nutrition, family relationships, culture, and social experiences. Understanding these factors is essential for teachers because every child develops differently and requires appropriate learning opportunities.
3.1 Heredity: Meaning and Definition
Heredity refers to the transmission of genetic characteristics from parents to their children through genes and chromosomes. Human beings share a common genetic structure, but every individual possesses a unique combination of inherited characteristics. These characteristics may include eye colour, hair colour, height, body structure, skin colour, facial features, and certain behavioural tendencies. Heredity provides the biological foundation for physical growth, intellectual potential, temperament, and personality development.
According to Peterson, heredity may be understood as what an individual receives from their ancestral stock through their parents. It includes physical characteristics, nature, character traits, intelligence, and cognitive abilities. However, inherited characteristics do not develop independently. Environmental conditions such as nutrition, education, family atmosphere, and social interaction also influence how these characteristics are expressed. Therefore, heredity should be understood as one important factor in development rather than the only determining factor.
3.1.1 Effects of Heredity
Heredity influences different aspects of human development. Its effects can be observed in physical characteristics, intelligence, character, maturation, and temperament. These effects vary among individuals because every child inherits a different combination of genetic characteristics.
1. Effect on Physical Characteristics
Physical characteristics refer to the visible features and bodily attributes of an individual. Children inherit biological characteristics from their parents through genes and chromosomes. For example, parents who are tall may have children who also possess a tendency towards greater height. Similarly, children may inherit facial features, hair characteristics, eye colour, and body structure from their parents.
A gene is a fundamental unit of heredity. It is a segment of DNA that contains biological instructions and contributes to the development of particular characteristics. However, children do not always resemble their parents in every respect. Siblings may differ in height, appearance, body structure, and physical abilities because they receive different combinations of genetic material.
Physical development is also influenced by nutrition, healthcare, physical activity, and living conditions. Therefore, heredity provides certain biological possibilities, while the environment influences how these possibilities develop. A child’s physical growth should consequently be understood through the combined influence of inherited characteristics and environmental conditions.
2. Effect on Intelligence
Heredity is one factor associated with the intellectual development of a child. Genetic characteristics may influence cognitive potential, reasoning ability, learning capacity, analytical skills, and decision-making. Children may inherit different combinations of characteristics that contribute to individual differences in intellectual development.
H. H. Goddard is associated with the view that intelligent parents would have intelligent children, whereas less intelligent parents would have less intelligent children. This represents a heredity-centred explanation of intelligence. However, intelligence is complex and cannot be explained by heredity alone. Education, family support, nutrition, motivation, learning opportunities, and social interaction also influence intellectual development.
A child’s mental abilities develop through the interaction of biological potential and experience. Problem-solving skills, language development, communication, and reasoning improve when children receive appropriate guidance and opportunities to learn. Teachers should recognise individual differences and provide varied learning activities to help every child develop their abilities.
3. Effect on Character
Heredity may contribute to certain behavioural tendencies and aspects of temperament and personality. Children may inherit some character-related traits from their parents. Dugwell’s view, as discussed in educational psychology, connects an individual’s character or nature partly with inherited characteristics.
However, character development is not determined by heredity alone. Family relationships, school experiences, moral education, cultural values, peer interaction, and personal experiences influence the development of character. Children learn appropriate behaviour by observing parents, teachers, and other role models.
Moral qualities such as honesty, responsibility, kindness, empathy, and cooperation develop through guidance and socialisation. Children gradually learn to distinguish between acceptable and unacceptable behaviour through family life, classroom activities, and interactions with society. Thus, heredity may provide certain tendencies, but the environment plays an important role in strengthening and modifying character.
3.1.2 Importance of Heredity
Heredity is important because it provides the biological foundation for human development. It influences physical characteristics, intellectual potential, maturation, temperament, and individual differences. Every child inherits a unique combination of characteristics that may influence their abilities, interests, and developmental patterns.
Heredity contributes to intellectual potential, but children need suitable opportunities to develop their abilities. Some children may demonstrate analytical intelligence, while others may show creativity, musical ability, practical intelligence, or social skills. Parents and teachers should identify these individual strengths and provide appropriate learning experiences.
Heredity also influences maturation, which refers to genetically influenced developmental changes that occur as a child grows. Skills such as walking, running, jumping, and balancing develop through neurological growth and muscular development. Nevertheless, proper nutrition, practice, encouragement, and physical activities are necessary for the effective development of these abilities.
Heredity also contributes to temperament. Temperament refers to relatively stable emotional and behavioural tendencies, such as activity level, adaptability, persistence, shyness, irritability, and distractibility. Although temperament may have a biological foundation, parenting styles, school conditions, peer relationships, and emotional support influence how these tendencies are expressed.
3.2 Environment: Meaning and Definition
Environment refers to the totality of the surroundings in which an organism lives, grows, and develops. The word environment is derived from the French word “Environia,” meaning “to surround.” It includes physical, social, cultural, and psychological conditions that influence an individual’s life.
Human beings interact continuously with their environment. Natural surroundings include air, water, vegetation, mountains, rivers, and climate. Social surroundings include family, school, community, friends, and cultural institutions. All these elements influence a child’s physical health, mental growth, emotional development, language, social behaviour, and personality.
Environment is not limited to physical surroundings. It also includes education, economic conditions, cultural values, family relationships, and emotional experiences. Children acquire knowledge, language, habits, and social values through interaction with people around them. For this reason, some psychologists have referred to the psychological environment as social heredity.
Environment consists of external forces, conditions, and influences that affect the life, growth, development, behaviour, and maturity of living organisms. It includes everything that surrounds an individual and directly or indirectly influences their development.
3.2.1 Effects of Environment
The environment affects children’s physical, mental, emotional, social, and behavioural development. A supportive environment provides opportunities for growth, whereas unfavourable conditions may create difficulties in learning and adjustment.
1. Physical Dissimilarities
Although physical characteristics are influenced by heredity, environmental conditions also affect physical growth. Climate, geographical location, nutrition, healthcare, physical activity, and living conditions may contribute to differences in physical development.
People living in different geographical regions may show differences in physical characteristics because of variations in climate, food habits, lifestyle, and living conditions. However, geographical location alone cannot explain physical differences. Genetic factors, nutrition, healthcare, and socioeconomic conditions also influence development.
Therefore, physical characteristics should be understood through the interaction of heredity and environment. Proper nutrition, medical care, exercise, and healthy living conditions can support a child’s physical growth.
2. Effect on Personality
Environmental conditions play an important role in the development and modification of personality. Family atmosphere, school experiences, peer relationships, cultural values, economic conditions, and educational opportunities influence how children think, feel, and behave.
A child who grows up in a supportive and encouraging environment may develop confidence, cooperation, responsibility, and positive social skills. In contrast, neglect, insecurity, discrimination, and limited opportunities may create difficulties in emotional and social development.
Individuals born into economically disadvantaged families may improve their circumstances after receiving better educational and social opportunities. A favourable environment can help children develop their abilities and use their potential more effectively.
Twin studies involving individuals raised in different environments have also been used to explain the influence of environmental experiences on personality development. However, such examples should not be interpreted as proof that children from a particular rural or urban background are naturally more or less intelligent. Children’s development depends on education, nutrition, family support, social opportunities, and individual experiences.
3. Effect on Mental Growth
The environment has an important influence on mental growth and cognitive development. Children require a stimulating environment that provides opportunities for communication, exploration, problem-solving, and learning. Mental development may be affected when children lack suitable social, educational, and cultural experiences.
Educational resources, proper nutrition, emotional support, and interaction with adults and peers help children develop their mental abilities. A deprived environment may limit learning opportunities, whereas a supportive environment can encourage curiosity, reasoning, creativity, and independent thinking.
Parents and teachers should create a safe and stimulating learning environment. Children should be encouraged to ask questions, participate in activities, communicate freely, and learn through practical experiences. Such an environment helps learners develop confidence and become active participants in the learning process.
4. Multiple Effects on Growing Children
The environment influences the physical, mental, social, emotional, and linguistic development of growing children. Human beings require care, communication, social interaction, and cultural learning to develop their abilities effectively.
Historical accounts of children allegedly raised among wild animals are sometimes used to highlight the importance of human companionship, language exposure, cultural learning, and social interaction. However, many such accounts are disputed or inadequately documented and should not be treated as conclusive scientific evidence.
From an educational perspective, children require a safe environment, emotional care, language exposure, education, and meaningful interaction with others. Social interaction helps children acquire language, understand cultural norms, develop emotional regulation, and learn appropriate behaviour.
Nature versus Nurture
The nature–nurture debate examines the relative influence of heredity and environment on human development. Nature refers to genetic and biological characteristics inherited from parents. It includes factors that may influence physical growth, intelligence, temperament, and personality. Nurture refers to upbringing, education, experiences, and environmental conditions that influence development.
The views associated with philosophers such as Plato and Socrates are often presented as giving importance to innate characteristics. In contrast, John Locke believed that knowledge develops through experience and is influenced by the environment. These perspectives represent different positions in the nature–nurture debate.
Modern understanding recognises that heredity and environment interact continuously. Heredity provides biological potential, while nurture influences how that potential develops and is expressed. For example, a wrestler may inherit a suitable body structure, but strength and stamina also depend on nutrition, training, practice, motivation, and environmental support.
Importance of Both Nature and Nurture
Both heredity and environment are essential for understanding human development. Heredity provides the biological foundation and certain developmental possibilities, while the environment influences how these possibilities are strengthened, modified, and expressed.
Environmental influences may begin before birth through maternal health, nutrition, stress, and prenatal conditions. After birth, family relationships, education, nutrition, and social interaction continue to influence development.
Therefore, human development is best understood through the interaction of nature and nurture. Heredity and environment do not work independently; they influence one another throughout the different stages of life.
Conclusion
Heredity and environment are two essential factors influencing human development. Heredity provides genetic characteristics and biological potential, while the environment shapes physical, mental, emotional, social, and moral development through experiences and interaction.
Teachers should recognise that every child has individual abilities, interests, and learning needs. A supportive classroom environment, suitable teaching methods, emotional encouragement, and equal learning opportunities can help children develop their potential.
Therefore, effective education should recognise individual differences while providing an inclusive, safe, and stimulating environment for every learner. Understanding the relationship between heredity and environment enables teachers to support children’s overall development and create meaningful learning experiences.
CTET/ SET / UGC NET MCQs on Heredity and Environment
- A child learns properly in an environment which
(a) Gives due weightage to the emotions and experiences of a child
(b) Gives ample space to play
(c) Promotes strict discipline
(d) Gives opportunities to make friends
- Environmental factors that shape development include all of the following except: [CTET Jan 2012]
(a) Quality of nutrition
(b) Culture
(c) Quality of education
(d) Physique
- Which of the following statements supports the role of environments in the development of a child? [CTET July 2013]
(a) Some students quickly process information while others in the same class do not.
(b) There has been a steady increase in students’ average performance on IQ tests in the last few decades.
(c) Correlation between IQs of identical twins raised in different homes is as high as 0.75.
(d) Physically fit children are often found to be morally good.
- Which one of the following statements is true regarding the role of heredity and environment in human development? [CTET Feb 2014]
(a) The relative effects of heredity and environment vary in different areas of development.
(b) The policy of compensatory discrimination of the Government of India is based on the role of ‘nature’ in human development.
(c) The role of environment is almost fixed, whereas the impact of heredity can be altered.
(d) The theories based on ‘behaviourism’ are largely based on the role of ‘nature’ in human development.
- In the context of the ‘nature-nurture’ debate, which one of the following statements seems appropriate to you? [CTET Feb 2015]
(a) A child is like a blank slate whose character can be moulded by the environment into any shape.
(b) Children are genetically predisposed to what they would be like irrespective of whatever environment they grow up in.
(c) Environmental influences only have a little value in shaping up a child’s behaviour, which is primarily genetically determined.
(d) Heredity and environment are inseparably interwoven and both influence development.
- Do children acquire language because they are genetically predisposed to do so or because parents intensively teach them from an early age? This question essentially highlights [CTET Sept 2015]
(a) Whether development is a continuous process or discontinuous one
(b) The influence of cognition on development of language
(c) The nature-nurture debate
(d) The discussion on development is a multi-factor ability
- “Environmental factors do not play any role in shaping an individual, since growth of each individual is determined by his genetic makeup.” This statement is [CTET Feb 2016]
(a) Correct, since there have been several researches to prove that genetic material alone predicts an individual’s development.
(b) Incorrect, since environmental factors contribute little in an individual’s growth and development.
(c) Incorrect, since there have been several researches to prove that environment can have a major influence on development.
(d) Correct, since genetic makeup of an individual is very strong.
- Which of the following statements about the role of heredity and environment in human development is correct? [CTET Dec 2019]
(a) The only reason for individual differences is heredity.
(b) Environmental influences totally shape the development of a human.
(c) Neither heredity nor environment influence human development.
(d) Heredity and environment both influence human development in a complex interplay.
- Human personality is primarily the result of: Exam: CTET 2012
(a) Heredity alone
(b) Environment alone
(c) Interaction between heredity and environment
(d) Only education and upbringing
- In the context of education, socialisation refers to: ** CTET 2012
(a) Always following social norms
(b) Respecting elders in society
(c) Adapting and adjusting to the social environment
(d) Creating individual social norms
- What does the term ‘nature’ mean in the nature–nurture debate? ** CTET 2015
(a) The temperature surrounding an individual
(b) The environment around a person
(c) Biological and hereditary information
(d) Physical and social forces
- Giftedness in children is best explained by: ** CTET 2018
(a) Having successful parents
(b) The interaction of heredity and environment
(c) Following a disciplined routine
(d) Growing up in a resource-rich environment alone
- Heredity refers to the transmission of characteristics from parents to offspring through:
(a) Education
(b) Genes
(c) Environment
(d) Socialisation
- Which statement is correct regarding the role of heredity and environment in child development? Exam: Goa SET-related question paper
(a) Heredity and environment contribute exactly 50% each.
(b) Heredity and environment do not operate together.
(c) The relative contributions of heredity and environment are not additive.
(d) Environmental factors have no effect on development.
- Which statement correctly explains the influence of heredity and environment? ** CTET 2018
(a) All development is determined by heredity.
(b) Nutrition can eliminate every disorder present at birth.
(c) Environment affects only language development.
(d) Some developmental aspects are influenced more by heredity, while others are influenced more by environment.
- Which statement best describes the effect of heredity on development? ** CTET 2018
(a) Heredity determines the limits of potential development.
(b) Heredity is the only determinant of development.
(c) Heredity completely determines achievement.
(d) None of the above
- Which statement about heredity and environment is correct? ** CTET 2014
(a) Adopted children always have the same IQ as their adoptive siblings.
(b) Genetic makeup can influence how a person responds to environmental conditions.
(c) Schooling does not affect intelligence.
(d) Experience has no effect on brain development.
- A child resembles and behaves like his or her father. This primarily illustrates:
(a) Environment
(b) Heredity
(c) Individual differences
(d) Theories of intelligence
- The debate concerning whether language development is caused by innate abilities or environmental influences is known as:
(a) Stability–instability debate
(b) Continuous–discontinuous learning debate
(c) Critical–sensitive period debate
(d) Nature–nurture debate
Exam: CTET 2015
- Which statement correctly describes the relationship between heredity and environment?
(a) Both contribute exactly 50% each.
(b) They do not work together.
(c) Their relative contributions vary across different developmental areas.
(d) Only heredity determines development.
Exam: CTET 2013
- Which factor is progressively important in intellectual development?
(a) Environment
(b) Heredity
(c) Both factors in every situation equally
(d) No factor is important
Exam: CTET Paper II
- What is considered the basic unit of heredity?
(a) Zygote
(b) Chromosome
(c) Gene
(d) Fertilised cell
Exam: CTET-related question repository
- The nature–nurture debate is concerned with the relationship between:
(a) Environment and biology
(b) Behaviour and environment
(c) Genetics and environment
(d) Environment and upbringing
Exam: CTET 2014
- A child’s language development is attributed by one person to innate predisposition and by another to environmental influence. This discussion concerns:
(a) Stability and instability
(b) Continuous and discontinuous learning
(c) Nature and nurture
(d) Critical and sensitive periods
Exam: CTET Paper II
- Which factor influences physical development?
(a) Heredity
(b) Sports and exercise
(c) Environment
(d) All of the above
Exam: CTET 2017
- Which statement correctly explains the influence of heredity and environment?
(a) Heredity and environment contribute exactly 50% each.
(b) Heredity and environment function independently.
(c) The relative contributions of heredity and environment are not identical in all developmental areas.
(d) Environment has no role in development.
Exam: CTET 2020
- A child inherits genes associated with brown eyes from one parent and blue eyes from the other. Which possibility is represented in the question?
(a) Blue-eyed offspring carrying an unexpressed brown-eye trait
(b) Blue-eyed offspring only
(c) Brown-eyed offspring
(d) Brown-eyed offspring carrying an unexpressed blue-eye trait
Exam: CTET 2020
- Which two factors are described as chance elements in the laws of inheritance?
A. The union of a particular sperm and a particular ovum
B. Independent assortment of chromosomes
C. Union of cells with different chromosome sets
D. Union of one particular chromosome with another chromosome
(a) A and D
(b) A and C
(c) B and C
(d) A and B
Exam: CTET 2020
- Which of the following statements correctly describes the influence of heredity?
(a) Heredity is the only determinant of development.
(b) Heredity determines the complete future of a child.
(c) Heredity establishes certain developmental potentials and limits.
(d) Heredity has no relationship with development.
Topic: Heredity and Child Development
- The issue involving the debate about whether development is primarily influenced by biological inheritance or environmental experiences is known as: [UGC NET Home Science, 14 June 2023, Shift 1]
(a) Continuity–discontinuity issue
(b) Nature–nurture issue
(c) Early–later experience issue
(d) Home–school issue
Answer Key:
01. (a), 02. (d), 03. (b), 04. (a), 05. (d), 06. (c), 07. (c), 08. (d), 09. (c), 10. (c),
11. (c), 12. (b), 13. (b), 14. (c), 15. (d), 16. (a), 17. (b), 18. (b), 19. (d), 20. (c),
21. (a), 22. (c), 23. (c), 24. (c), 25. (d), 26. (c), 27. (d), 28. (d), 29. (c), 30. (b).
