Age-related peers - Individuals who share the same age range.

Algorithm - A set of instructions or rules for performing a calculation or process to determine whether a score on a
diagnostic test or set of observations meets specific criteria necessary to assign a diagnosis.

Assessment for intervention planning - Careful examination of an individual’s strengths and  challenges across several
domains of functioning with the express objective of directing treatment planning and intervention based upon the person’s
individual profile. An assessment for intervention planning expands upon the diagnostic evaluation, capturing the child’s
heterogeneity and individuality within the diagnostic category. The desired outcome of the assessment process is an
individualized profile that is incorporated into an intervention plan. The intervention plan is designed to maximize child
development and functional skills within the context of the family and community environment. (Often referred to as
“assessment” or “interdisciplinary assessment.”)

Care coordinator - The person who manages a caseload and who is responsible for ensuring that services written in the
Individual Family Service Plan and/or Individual Education Plan for an individual with a developmental disability are provided.

Circumstantiality - A pattern of speech that is indirect and delayed in reaching its goal because of excessive or irrelevant
detail or parenthetical remarks. The speaker does not lose the point, but to the listener it seems that the end will never be
reached.

Comorbid disorder - A disorder that coexists with another diagnosis so that both share a primary focus of clinical attention.
Comorbidity may affect the ability of affected individuals to function and survive in a given environment; it may be used as a
prognostic indicator for treatment effectiveness and outcome.

Developmental disability - A severe and chronic impairment that is attributable to one of the following conditions: mental
retardation, cerebral palsy, epilepsy, autism or a disabling condition closely related to mental retardation or requiring similar
treatment. To establish eligibility for services within the regional center system, a disability is further defined as having begun
before the eighteenth birthday, as being expected to continue indefinitely and as presenting a substantial adaptive impairment.

Developmental surveillance - An ongoing process of routine monitoring and tracking of children’s specific developmental
milestones during regular well child visits. The practice of developmental surveillance by health care providers ensures early
detection of developmental problems.

Diagnostic evaluation - The process of gathering information via interview, observation and specific testing in order to
arrive at categorical conclusions.

Differential diagnosis - Based on analysis of clinical data, the determination of which of two or more disorders with similar
symptoms is the disorder that is the primary focus of clinical attention.

Early identification - The prompt detection of developmental delays through medical and developmental screening and at the
youngest age possible. Such screening is provided to children school age or younger and to their families who have or who
are at risk of having a handicapping condition or other special need that may affect their development. Early identification
increases the chances for improving developmental skills.

Echolalia -  A disorder of language that results in repetitions of words or phrases previously heard. Echolalic responses can
be immediate or delayed.

Ecological factor - The influence of interactions among people and their environments including the social/emotional and
physical environment. Ecological factors are studied in behavior settings, such as a family and the environment within which it
operates, in order to predict the effect a specific factor may have on a particular individual.

Ecological validity - Skills or abilities authenticated and evidenced in natural and informal procedures, such as a familiar
setting at home or a casual conversation, that may not be similarly expressed in structured assessment measures and tests.

Eye gaze - An individual’s eye contact with another individual or with an object. Eye contact is a nonverbal form of
communication and means of regulating social interaction. Observance of patterns of avoidance or initiation of eye gaze is
important in detecting a child’s capacity for sharing of attention and affect.

Family-centered - The procedure of assessing the child’s and family’s needs as a whole, i.e., allowing the assessment to be
family directed and designed to determine the resources, priorities and concerns of the family. The outcome of a family-
centered assessment is the identification of supports and services needed to enhance the family’s capacity to meet the needs
of the child.

High-functioning - A non-clinical description of a person with a diagnosis of autistic disorder who has average or near-
average intellectual ability. “High functioning” individuals with autism tend to achieve higher levels of adaptive and
communication skills. Also termed, “high functioning autism,” or “HFA,” it is not a distinct diagnostic category.

Individuals with Disabilities Education Act (IDEA) - Public Law 105-17, amended in 1997, that ensures that all children
with disabilities have a free appropriate public education and related services that prepare them for employment and
independent living.

Interdisciplinary - The descriptor for the process of gathering information from a variety of disciplines having unique
knowledge of a particular aspect of the child and family, which stresses a highly coordinated effort among the disciplines to
complement (rather than duplicate) efforts and to forge information into a cohesive plan for diagnostic conclusions and/or
intervention.

Joint attention - The ability to share with another person the experience of an object of interest. Joint attention generally
emerges between 8 and 12 months of age. A moving toy, for example, typically elicits a pointing behavior by the child, who
looks alternately at the caregiver and the object.

Lead clinician - The professional who takes responsibility during an interdisciplinary team evaluation for ensuring that all
relevant evaluations are performed, documented and reported. The lead clinician is responsible for assuring the integration of
separate findings to formulate a diagnosis and/or assessment conclusions to communicate the findings to the family and other
team members.

Longitudinal assessment - Measurement across time of developmental progress, behavior and/or specific symptomatology
following treatment and/or intervention.

Longitudinal study - Research in which variables relating to an individual or group of individuals are assessed over a period
of time, such as a study of child development drawn from research data compiled from the same group of children at
different points in their lives.

Multi-disciplinary - In contrast to an interdisciplinary process, a process that proceeds as separate evaluations by various
professionals who often are affiliated with different entities (i.e., a university or hospital), are rarely in close proximity and
often operate without benefit of collaboration with other evaluating professionals, consequently often drawing separate
conclusions based upon their particular experience. A multidisciplinary process can take one to two days, with the child and
family participating in numerous sessions, or it can take place over the course of several months.

Nonverbal IQ - A measure of intelligence that requires little or no language. Nonverbal tests of IQ measure intellectual ability
by requiring the examinee to manipulate objects, copy or draw. Examples of nonverbal intelligence tests are the performance
subtests of the Columbia Mental Maturity Scale, 3rd edition, Merrill-Palmer Scale of Mental Tests, Leiter International
Performance Scale and the Test of Nonverbal Intelligence, 3rd edition.

Non verbal communication - Facial expressions, tone of voice, gesture, eye contact, spatial arrangements, patterns of touch,
expressive movement, cultural differences and other acts of expression involving no or minimal use of spoken language.
Research suggests that nonverbal communication is more important in understanding human behavior than words alone and
critical to social development and comprehension.

Norm-referenced assessment - Test scores, derived during the administration of a standardized test in its developmental
stage to a large sample of individuals within the same age range, which form the yardstick for comparing a given individual’s
score to a group average.

Phenotype - The visible properties of an organism that are produced by the interaction of the genotype and the environment.
In other words, the “phenotypic” expression of a disorder refers to the outward, behavioral expression of symptoms that may
or may not share a similar etiology, course or response to treatment.

Pragmatics - The analysis of language in terms of the situational context within which utterances are made, including the
knowledge and beliefs of the speaker and the relation between speaker and listener; the ability and desire to communicate in an
appropriate way for one’s age and culture.

Pre-verbal communication - Eye contact, gaze shifts, vocalizations and gestures that form the basis of expression prior to
spoken language development. Eye contact, gaze shifts, vocalizations and gestures are examples of pre-verbal forms of
communication.

Prosody - Prosody refers to the use of vocal stress and intonation to convey a meaning. For example, the only difference
between the noun ‘object and the verb ob’ject is that of stress placement. Intonation determines whether the sentence “Mary’
s eating cake” will be perceived as a statement (pitch falls on the last word) or a question (pitch rises on the last word).

Psychometrics - The measurement of human characteristics such as intelligence, personality, etc. through the administration
of tests that are validated by objective and standardized scientific methods.

Receptive language - The act of understanding that which is said, written or signed.

Regional center - A statewide system of twenty-one locally based, state-funded, private nonprofit agencies that provide
diagnostic, case management and other services to individuals with developmental disabilities and that help individuals and their
families find and access those services.

Ritualistic behavior - Rigid routines, such as insistence on eating particular foods or driving to the store via only one specific
route when many options exist, or repetitive acts, such as hand flapping or finger mannerisms (e.g., twisting, flicking
movements of hands and fingers carried out near the face).

Screening - The use of a specific test or instrument to identify those children in the population most likely to be at risk for a
specified clinical disorder. The application of specific screening instruments for a particular disorder may occur at a specific
age for the general population or when concerns and/or results of routine developmental surveillance indicate that a child is at
risk for developmental difficulties. Screening instruments are not intended to provide definitive diagnoses but rather, to
suggest a need for further diagnostic evaluation and assessment for intervention planning.

Social reciprocity - Mutual responsiveness in the context of interpersonal contact, such as awareness of and ability to
respond appropriately to other people. Social reciprocity is synonymous with inter-subjectivity.

Social referencing - An aspect of early social development whereby the infant or toddler uses the nonverbal social cues (i.e.,
eye gaze, facial expression, tone of voice) of another to express or share excitement or pleasure, or checks to see if a
behavior will be affirmed or disapproved. The child with autism rarely, if ever, gains social feedback through another’s tone
of voice or facial expression.

Splinter skills - An isolated ability that often does not generalize across learning environments. These abilities are often
widely discrepant from other areas of functioning.

Stereotypic behavior - Repetitive movement of objects or repetitive and complex motor mannerisms including hand or whole
body movement such as clapping, finger flapping, wholebody rocking, dipping, swaying, finger flicking, etc.)

Structured interview - An interview that follows a fixed protocol for gathering information in which the interviewer asks
standard questions and codes the answers in accordance with predefined criteria.

Syndrome - A set of clinical signs or a series of behaviors occurring together that often point to a single disorder or condition
as the cause. In autistic disorder, a number of symptoms belong to the disorder, but a variable subset of all the symptoms
qualifies an individual for the disorder.

Tangentiality - Replying to a question in an oblique or irrelevant way.

Temperament - Characteristic behaviors, habitual inclinations or modes of emotional response in infants and toddlers, which
may persist and contribute to the development of personality in adulthood. Temperamental behaviors are biologically rooted,
commonly recognized as individual differences that appear early in development and stable as observable behavior. Core
temperamental characteristics are attentional persistence, positive affectivity to people or objects, fearfulness, distress and
irritability to novelty and frustration.
Glossary, understanding phrases and words of developmental disorders.  Bright Tots information on early childhood development  www.brighttots.com
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