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 IEP 
See Individualized Education Program. 
IEP Team 
Refers to the group of people that write an Individualized Education Program for
a student who has been diagnosed with a specific exceptionality and deemed
eligible for special education services. Under the Individuals with Disabilities
Education Act, the IEP Team must include the following members: the parent(s)/guardian(s)
of the student, at least one regular education teacher of the student (when
applicable), at least one special education teacher/provider of the student, a
qualified representative of the local education agency, an individual qualified
to interpret the instructional implications of evaluation results, other
individuals whom the parents or the school district may select, and the student
(when appropriate). The IEP Team is also sometimes called the IEP Committee. 
Immaturity 
Group of behavior disorders, including short attention span, extreme passivity,
daydreaming, preference for younger playmates, and clumsiness. 
Impedance Audiometry 
Procedure for testing middle ear function by inserting a small probe and pump
to detect sound reflected by the eardrum. 
Impulsivity 
Reacting to a situation without reflecting on the consequences. 
Incidence 
The percentage of people who, at some time in their lives, will be identified as
having a specific condition. Often reported as the number of cases of a given
condition per 1,000 people. 
Inclusion 
A philosophy that advocates placement of students with disabilities and special
education teachers in regular classrooms and that incorporates cooperative
learning and team-teaching models. 
Individualized Education Program (IEP) 
Written document required by the Individuals with Disabilities Education Act (P.L.
94-142) for every child with a disability; includes statements of present
performance, annual goals, short-term instructional objectives, specific
educational services needed, relevant dates, regular education program
participation, and evaluation procedures; must be signed by parents as well as
educational personnel. 
Individualized Family Service Plan (IFSP) 
A requirement of P.L. 99-457, Education of the Handicapped Act Amendments of
1986, for the coordination of early intervention services for infants and
toddlers with disabilities from birth to age three. 
Inferential Comprehension 
A level of comprehension that requires students to go beyond rote recall of main
ideas and details and to draw conclusions from written text. 
Inflection 
Change in pitch or loudness of the voice to indicate mood or emphasis. 
Informal Tests 
Non-standardized, task-oriented tests used to provide information concerning
specific skills. 
In-Service Training 
An educational program designed to provide practicing professionals (i.e.
teachers, administrators, counselors) with additional knowledge and skills. 
Insulin 
A protein hormone produced by the pancreas that regulates carbohydrate
metabolism. 
Insertion 
In reading, spelling, or math, the addition of letters or numbers which do not
belong in a word or numeral. 
Intellectualization 
A defense mechanism in which the individual exhibits anxious or moody
deliberation, usually about abstract matters. 
Inter-Observer Agreement 
The degree to which two or more independent observers record the same results
when observing and measuring the same target behavior(s); generally reported as
a percentage of agreement. 
Inter-Rater Agreement 
See Inter-Observer Agreement. 
Interdisciplinary Team 
A term sometimes used to refer to the Child Study Team; more often, the term
refers to the school-based team that screens potential referrals to the Child
Study Team. Also called the Multidisciplinary Team 
Interindividual Differences 
Differences between two or more people in one skill or set of skills. 
Interpersonal Skills 
A set of skills that enables one to get along well with others. 
Intervention 
Any effort made on behalf of children and adults with disabilities; may be
preventive, remedial, or compensatory. 
Intraindividual Differences 
Differences within one individual on two or more measures of performance. 
Inversions 
In reading, spelling, or math, confusion of up-down directionality of letters or
numbers. 
Intelligence Quotient (IQ) 
The ratio between a person’s chronological age and mental age (as measured by an
intelligence test), multiplied by 100. 
Iris 
The opaque, colored portion of the eye that contracts and expands to change the
size of the pupil. 
Itinerant Teacher 
Special education teacher who travels between more than one school in the same
district. 
  
 *See
Reference Information 
  
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