1. Children, whose capacity for education or training is limited by low intelligence, cover a fairly wide I.Q. range from approximately 40 to 80 or 90. However, students whose I.Q. ranges between 50/55 and 85/90 are capable of benefiting from the kind of education which is offered within the normal school system. These may be subdivided
into two groups.
(i) The Educable Mentally Retarded (I.Q. range 50 to 70)
(ii) The Dull Normal (I.Q. range 70 to 85)

Trainable Mentally Retarded:

Students whose I.Q. range is between 35/40 and 50 and are usually termed as the Trainable Mentally Retarded. Provision for education of such children may be made outside the normal school system.


In physical appearance they are no different from normal children and therefore likely to get admission into schools for normal children where the curriculum is drawn up to meet the needs of average children. So they find it extremely difficult to cope with the education imparted in these schools, unless special provision is made for them and the curriculum is oriented towards practical and real life activities.
They are capable of being educated in ordinary schools and even achieving a moderate degree of success, if they are allowed to proceed at a slower pace and the syllabus is adapted to suit their abilities.
But, they will not be able to keep pace with the average children and never be able to learn all the things we expect normal children to master by the time they leave school.
They will not be able to go for higher studies despite all the guidance and educational facilities made available to them.
They have poor memories. Their attention span is short and they cannot concentrate on one topic for long.

Sullivan has summarized the characteristics of slow learners as follows:

Short attention and concentration span.
slow reaction time.
Limited powers of self-direction.
Limited ability to work with abstractions and to generalize.
Slowness to form association between words and phrases.
Failure to recognize familiar elements in new information.
Habits of learning very slowly and forgetting very quickly.
Very local point of view.
Inability to set up and realize standard or workmanship.
Lack of originality and creativeness.
Inability to analyze, to do problem solving, or think critically.
Lack of power to use the higher mental processes.

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