•The student displays problems extending into many aspects of the communication process.
•Language, if present, may lack usual communicative function, content, or structure.
•Characteristics may involve both deviance and delay in both receptive and expressive language.
•The student displays difficulties in relating to people, objects, and events.
•Often students are unable to establish and maintain reciprocal relationships with people.
•The capacity to use objects in an age appropriate or functional manner may be absent, arrested, or delayed.
•The student may seek consistency in social events to the point of exhibiting rigidity in routines.
Repertoire of Activities, Interests, and Imaginative Development
•The student displays marked distress over changes, insistence in following routines, and a persistent occupation with or attachment to objects.
•The student may display a markedly restricted range of interest and/or stereo-typed body movements.
•There may be a lack of interest or an inability to engage in imaginative activities.
Developmental Rates and Sequences
•The student may exhibit delays, arrests, regressions in physical, social, or learning skills
•Areas of precocious or advanced skill development may also be present, while other skills may develop at normal or extremely depressed rates.
•The order of skill acquisition frequently does not follow normal developmental patterns.
•The student may exhibit unusual, repetitive, or non-meaningful responses to auditory, visual, olfactory, gustatory, tactile, and/or kinesthetic stimuli.
•The student’s behavior may vary from high levels of activity and responsiveness to low levels.
•The student may exhibit abnormalities in the thinking process and in generalizing.
•Difficulties in abstract thinking, awareness and judgment may be present as well as perseverative thinking and impaired ability to process symbolic information.