Table 3 Assessment of the autistic behavioral domains and subdomains based on the Autism Diagnostic Interview–Revised algorithm ^a

Total social interaction

2

1

2

1

 B1: Failure to use nonverbal behaviors to regulate social interaction

2

1

2

1

 B2: Failure to develop peer relationships

2

1

3

1

 B3: Lack of shared enjoyment

3

2

3

1

 B4: Lack of socioemotional reciprocity

2

1

2

1

Total nonverbal communication

3

2

3

1

 C1: Delayed spoken language and failure to compensate through gesture

2

2

2

1

 C4: Lack of varied spontaneous make-believe or social imitative play

3

1

3

0

Total repetitive behaviors and stereotyped patterns

3

2

2

2

 D1: Encompassing preoccupation or circumscribed pattern of interest^b

3

2

2

2

 D2: Compulsive adherence to nonfunctional routines or rituals

1

1

2

0

 D3: Stereotyped and repetitive motor mannerisms^c

3

2

3

3

 D4: Preoccupations with part of objects or nonfunctional elements

2

1

1

2