A1. Deficits in social-emotional reciprocity |
Abnormal social approach |
Intrusive initiations
Use of others as tools
Excessive verbosity
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Failure of normal back and forth conversation |
One-sided conversations
Monologues
Tangential speech
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Reduced sharing of interests |
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Lack of bringing, showing, pointing
Lack of initiating or responding to joint attention
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Reduced sharing of emotion |
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Lack of initiation of or response to social interaction |
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A2. Deficits in nonverbal communicative behaviors |
Abnormalities in eye contact |
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Reduced eye contact
Gaze avoidance
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Impairment in use and understanding of body language |
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Abnormal volume, pitch, intonation, rate, rhythm, stress, prosody, or volume in speech |
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Deficits in understanding and use of gestures |
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Abnormalities in use and understanding of facial expressions |
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Limited range of facial expressions
Limited communication of own affect
Inability to recognize others’ nonverbal expressions
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Lack of coordinated verbal and non-verbal communication |
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A3. Deficits in developing, maintaining, and understanding relationships |
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Difficulties in making friends |
Excessive overtures that are off-putting to others
Breaching conventions of social interactions, such as by being extremely directive or rigid
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Difficulties adjusting behavior to suit various social contexts |
Inappropriate expressions of emotion, such as laughing or smiling out of context
Socially inappropriate statements and questions
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Failure to notice others’ lack of interest
Lack of response to contextual cues
Failure to notice other’s distress
Failure to recognize when not welcome in play or conversation
Limited recognition of social emotion
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Difficulties in sharing imaginative play |
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Absence of interest in peers |
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B1. Stereotyped or repetitive motor movements, use of objects, or speech |
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Stereotyped or repetitive speech |
Pedantic speech
Echolalia
Idiosyncratic language
Pronoun reversal
Perseverative language
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Stereotyped or repetitive motor movements |
Repetitive hand movements
Complex whole body movements
Body tensing
Abnormal postures, such as toe walking
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Stereotyped or repetitive use of objects |
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B2. Insistence on sameness, inflexible adherence to routines, or ritualized patterns of verbal and nonverbal behavior |
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Adherence to routine |
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Excessive resistant to change |
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Rigid thinking |
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Inability to understand humor
Inability to understand nonliteral aspects of speech
Excessively rigid, inflexibility, or rule-bound thought
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B3. Highly restricted, fixated interests that are abnormal in intensity or focus |
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Preoccupations and obsessions |
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Perseverative thinking patterns
Preoccupation with numbers, letters, symbols
Splinter skills, such as hyperlexia
Overly perfectionistic cognitive style
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Excessively circumscribed or perseverative interest |
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Excessive focus on non-relevant or non- functional parts of objects |
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Attachment to unusual objects |
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B4. Hyper- or hypo-reactivity to sensory input or unusual interest in sensory aspects of the environment |
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Unusual visual exploration |
Close visual inspections of objects
Peering out of the corner of one’s eyes
Extreme fascination with watching movement
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Apparent indifference to pain |
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In all domains of sensory stimuli, odd response to sensory input |
Extreme distress to loud noises or particular clothing or food textures
Persistent focus on sensory input, such as fans spinning or water running
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Lack of response to sound, sight, or touch
Under-responsiveness to sensory stimuli
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Unusual sensory exploration with objects |
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