Individual difference stands for variation or deviation among individuals in regard to a single characteristics or a number of characteristics like height, weight, color, complexion ext. It is known fact that no two persons are alike, not even the twins. Each person has an intellectual capacity through which he gains experience and learning.
Types of Individual Differences:
1. Physical differences:
Shortness
or tallness of stature, darkness or fairness of complexion, fatness,
thinness, or weakness are various physical individual differences.
2. Differences in intelligence:
There
are differences in intelligence level among different individuals. We
can classify the individuals from super-normal (above 120 I.Q.) to
idiots (from 0 to 50 I.Q.) on the basis of their intelligence level.
3. Differences in attitudes:
Individuals differ in their attitudes towards different people, objects, institutions and authority.
4. Differences in achievement:
It
has been found through achievement tests that individuals differ in
their achievement abilities. These differences are very much visible in
reading, writing and in learning mathematics.
These differences in
achievement are even visible among the children who are at the same
level of intelligence. These differences are on account of the
differences in the various factors of intelligence and the differences
in the various experiences, interests and educational background.
5. Differences in motor ability:
There
are differences in motor ability. These differences are visible at
different ages. Some people can perform mechanical tasks easily, while
others, even though they are at the same level, feel much difficulty in
performing these tasks.
6. Differences on account of sex:
McNemar and Terman discovered the following differences between men and women, on the basis of some studies:
(i) Women have greater skill in memory while men have greater motor ability.
(ii) Handwriting of women is superior while men excel in mathematics and logic.
(iii)
Women show greater skill in making sensory distinctions of taste, touch
and smell etc., while men show greater reaction and conscious of size-
weight illusion.
(iv) Women are superior to men in languages, while men are superior in physics and chemistry.
(v) Women are better than men in mirror drawing. Faults of speech
etc. in men were found to be three times of such faults in women.
(vi) Women are more susceptible to suggestion while there are three times as many colour blind men as there are women.
(vii)
Young girls take interest in stories of love, fairy tales, stories of
the school and home and day-dreaming and show various levels in their
play. On the other hand boys take interest in stories of bravery,
science, war, scouting, stories of games and sports, stories and games
of occupation and skill.
7. Racial differences:
There
are different kinds of racial differences. Differences of environment
is a normal factor in causing these differences. Karl Brigham has
composed a list on the basis of differences in levels of intelligence
among people who have migrated to United States from other countries.
On
the basis of these average differences between the races, the mental
age of a particular individual cannot be calculated since this
difference is based on environment.
8. Differences due to nationality:
Individuals
of different nations differ in respect of physical and mental
differences, interests and personality etc. ‘Russians are tall and
stout’; ‘Ceylonese are short and slim’; ‘Germans have no sense of
humour’; ‘Yellow races are cruel and revengeful’; ‘Americans are hearty
and frank’; Indians are timid and peace-loving’ and the like
observations enter into our common talk.
9. Differences due to economic status:
Differences in children’s interests, tendencies and character are caused by economic differences.
10. Differences in interests:
Factors
such as sex, family background level of development, differences of
race and nationality etc., cause differences in interests.
11. Emotional differences:
Individuals
differ in their emotional reactions to a particular situation. Some are
irritable and aggressive and they get angry very soon. There are others
who are of peaceful nature and do not get angry easily. At a particular
thing an individual may be so much enraged that he may be prepared for
the worst crime like murder, while another person may only laugh at it.
12. Personality differences:
There
are differences in respect of personality. On the basis of differences
in personality, individuals have been classified into many groups.
Spranger, for example, has classified personalities into six types:
(a) Theoretical,
(b) Economic
(c) Aesthetic,
(d) Social,
(e) Political, and
(f) Religious.
Jung classified people into three groups:
(a) Introverts,
(b) Extroverts, and
(c) Ambiverts.
Trottor divided individuals into:
(a) Stable minded, and
(b) Unstable minded.
Jordon thinks of personalities into:
(a) Active, and
(b) Reflective type.
Thorndike has classified people into four categories on the basis of thinking:
(a) Abstract thinkers,
(b) Ideational thinkers,
(c) Object thinkers, and
(d) Thinkers in whom sensory experience is predominant.
Terman has classified people into nine classes according to their level of intelligence:
(a) Genius,
(b) Near genius
(c) Very superior,
(d) Superior,
(e) Average,
(f) Backward,
(g) Feebleminded,
(h) Dull, and
(i) Idiot.
It
is an admitted fact that some people are honest, others are dishonest,
some are aggressive, others are humble, some are social, others like to
be alone, some are critical and others are sympathetic. Thus we see that
the differences in personality are dependent on personality traits.
Teacher should keep in mind these differences while imparting education
to the pupils.
Causes of Individual Differences:
Some of the main causes of individual differences are as under:
1. Heredity:
One
of the most significant and chief causes of individual differences is
heredity. Individuals inherit various physical traits like face with its
features, colour of eyes and hair, type of skin, shape of skull and
size of hands, colour blindness, baldness, stub-finger and tendency to
certain diseases like cancer and tuberculosis, mental traits like
intelligence, abstract thinking, aptitudes and prejudices. Now it is an
admitted fact that heredity differences result in the quantity and rate
of physical as well as mental development being different and different
individuals.
2. Environment:
Environment
significantly influences individual differences. Changes in child’s
environment are reflected in the changes in his personality.
Psychologically speaking, a person’s environment consists of sum total
of stimulation which he receives from conception until his death.
Environment
consists of physical, intellectual, social, moral, political, economic
and cultural forces. All these forces cause individual differences.
Modern psychologists believe that individual differences are caused by
both heredity and environment. Personality is the outcome of mutual
interaction between heredity and environment.
3. Influence of caste, race and nation:
Individuals
of different castes and races exhibit very marked differences. It is
generally seen that son of a Kshatriya has a more of courage in him
while the son of a trader has the traits of business.
Similarly
individuals of different nations show differences in respect of their
personality, character and mental abilities. These are the outcome of
their geographical, social and cultural environment. Many studies have
shown the existence of differences between Americans and Negroes,
Chineese and Japaneese, English and Indian individuals.
4. Sex differences:
Development
of boys and girls exhibits differences due to difference in sex. The
physical development of the girl takes place a year or two earlier than
the boys. Between the age of 11 and 14, girls are taller and heavier
than the boys. After 15, boys start winning the race.
Girls are kind, affectionate, sympathetic and tender while the boys are brave, hard, choleric, efficient and competent.
5. Age and intelligence:
Physical,
intellectual and emotional development is caused by the growth in age.
Many individuals differ because of the differences in intelligence.
Individuals who are below the average in intelligence and mental age
find much difficulty in learning and the average intelligent persons can
learn quickly.
6. Temperament and emotional stability:
Some
people are by temperament active and quick, while others are passive
and slow, some humorous and others short tempered. Emotional stability
of the individual is differently affected by physical, mental and
environmental factors. Differences in emotional stability cause
individual differences.
7. Other Causes:
Interests, aptitudes, achievements, sentiments, character, educational and home background lead to individual differences.
8. Economic condition and education:
Individual
differences are caused by economic condition of the parents and the
education of the children. It is not possible for the children of two
economic classes to have a similarity and equality.
Role of Individual Differences in Education:
One
of the important objectives of modern education is the complete
development of the individual. Individuals have different goals,
different interests, different emotional problems and different
abilities. We cannot afford to ignore these individual differences in
imparting education to children. Since school work is planned on group
basis it presents a formidable challenge to all teachers.