Exam 1 Flashcards
Developmental symptoms of ASD
- social communication
- stereotyped or repetitive behavior
Definition of Autism Spectrum Disorder
ASD is a biologically based neurodevelopmental disorder
ASD is “qualitative” disorder, what does this mean?
this means that while one child may demonstrate only a few autistic-like symptoms, another child may demonstrate many significant autistic symptoms
parent friendly description of ASD
- ASD is a developmental brain disorder
- there are two areas: social communication and repetitive behaviors.
- There are lots of variations from child to child. Some may have many symptoms while others have few.
Prevalence of ASD
1 out of every 68 children.
- continuous increase since 1970 (1 in 2500). 1995 (1 in 500). 2000 (1 in 150). 2009 (1 in 110).
Male to female ratio for ASD
more males than females
4 males to every 1 female with ASD
ASD Co-occurs with what other disorders?
intellectual disabilities
seizure disorders
tuberous sclerosis
What are some of the social communication differences in people with ASD?
- different communication profiles than children with other language disorders.
- difficulty initiating social interaction.
- difficulty sharing affect.
- lack of coordination of nonverbal communication.
- difficulty with peer relationships
How do repetitive behaviors and restricted interests present in ASD?
- Hypersensitive to sensory stimulation
- narrow rigid interests
DSM-IV diagnostic criteria for pervasive developmental disorder (PDD)
- aka: ASD
- impairment in social interaction
- impairment in communication
- repetitive behaviors and fixated interests
DSM-IV PDD Characteristics
- what are impairments in social interactions
- impairment in the use of nonverbal behavior.
- lack of spontaneous sharing
- lack of social/emotional reciprocity
- failure to develop peer relationships
DSM-IV PDD characteristic
- what is impairment in communication?
- delay in or lack of development of spoken language and gestures.
- impairment in the ability to initiate or maintain conversation.
- Repetitive and idiosyncratic use of language.
- lack of pretend play.
DSM-IV PDD Characteristics
- what are repetitive behaviors and fixated interests?
- preoccupation with restricted patterns of interests.
- inflexible adherence to routines.
- repetitive movements.
- preoccupation with parts of objects.
DSM-5 Diagnostic Criteria for Autism Spectrum Disorder (ASD)
- Impairment in social communication
- Repetitive behaviors and restricted interests
DSM-5 ASD Characteristics
- what is impairment in social communication?
- impairment in social-emotional reciprocity
- impairment in the social use of nonverbal behavior (gestures, facial expression, gaze)
- difficulty developing relationships
DSM-5 ASD Characteristics
- what are repetitive behaviors and restricted interests?
- repetitive movements or speech.
- inflexible adherence to routines
- highly restricted or fixated interests.
- unusual sensory interests or responses
Changes from DSM-IV to DSM-5
- Autistic disorder, Asperger’s disorder, childhood disintegrative disorder, and PDD-NOS all become ASD.
- Three domains -> Two domains: Social/communication and repetitive behavior/restricted interest.
Why the change to include Autistic disorder, Asperger’s, childhood disintegrative disorder, and PDD-NOS all as ASD?
- distinctions among these classifications are not consistent across times or sites and do not group individuals with ASD into meaningful subtypes.
- Representing ASD as a single diagnostic category reflects the current state of knowledge about this spectrum disorder and it’s clinical presentation
Why go from 3 domains in the DSM-IV to 2 domains in the DSM-5?
- social and communication are difficult to separate.
- language delays are not unique to ASD, and not all children with ASD have a language delay.
What is an impairment in social communication?
- social-emotional reciprocity aspect…
- responding/initiating interaction.
- turn-taking
- contingent responses.
- normal back and forth conversation
What is impairment in social communication?
- social use of nonverbal behavior joint attention aspect (orienting to people, sharing attention, monitoring partners) … this includes..?
- eye gaze
- body language (using and interpreting)
- understanding/use of gestures
- symbolic play (pretend play)
What are some types of gestures?
- reaching
- showing
- pointing
- waving
- giving
- clapping
- head shaking
What is impairment in social communication?
- difficulty developing relationships aspect..?
- adjusting behavior to social context
- sharing imaginative play
- making friends
- absence of interest in peers
What are repetitive behaviors and restricted interests?
- repetitive movements or speech aspect..
- body movements (ex. flapping).
- behaviors with objects (ex. stacking, lining up, spinning wheels)
- speech (echolalia)
What are repetitive behaviors and restricted interests?
- inflexible adherence to routines aspect…
- aka insistence on sameness
- transitions
- daily routines
- eating
What are repetitive behaviors and restricted interests?
- highly restricted or fixated interests aspect…
- preoccupation with unusual objects (for their age)
- circumscribed/perseverative interest
What are repetitive behaviors and restricted interests?
- unusual sensory interests or responses aspect…
- pain sensation
- sound response
- texture aversion
- proprioception seeking (where body is in space)
in what ways does ASD vary from child to child?
- high vs. low functioning
- verbal vs. nonverbal (~25% are nonverbal)
- range of intellectual abilities
Secondary Characteristics of ASD include which 2 areas?
- motor and perceptual differences.
- Learning differences
Secondary characteristics
- motor and perceptual differences area..
- delayed motor development
- toe walking
- body placement difficulty
Secondary characteristics
- learning differences area…
- impairment in memory for meaningful information.
- rote memory may be relatively intact
- empathizing
Causation/Risk factors for ASD
- Neurophysiologic/neurochemical studies.
- Genetic link
- environmental link