Encompassing preoccupation with one or more stereotyped and restricted patterns of interest that is abnormal either in intensity or focus
What are his favorite toys and activities?	Y □	N □
Does he always play with toys in the same way, e.g. by lining up toy cars or sorting toys by color?	Y □	N □
Does he have a special (all encompassing) interest in one toy, activity or subject (e.g. trains or flags) or an interest in unusual objects or topics (e.g. sprinkler systems, astrophysics)?	Y □	N □
How does he react if you try to change a favorite activity or topic of conversation?	Y □	N □
Does he have an unusually good memory for the details of special interests, family activities or vacations?	Y □	N □
Apparently inflexible adherence to specific, non-functional routines or rituals
Does _____ have rigid rituals or routines? For example, are there things he has to do in a particular way or in an exact order every time at mealtime, bedtime or during play?	Y □	N □
How does he react if his routine is interrupted or he can’t complete it (e.g. a toy is broken or missing, he has to sleep at a motel when on vacation, you drive a different way home)?	Y □	N □
How does he react to changes in his schedule(e.g. school assembly canceled) or changes in his environment (e.g. how the furniture is arranged at home or classroom, where he sits at the dinner table)?	Y □	N □
Does he repeat certain activities over and over, for example: with objects (dropping or rolling, always carrying a specific object); cleaning (washing) hands; use of toilet paper; checking (appliances off, doors closed); counting (toys, money); or ordering (toys, clothes, towels in bathroom)? Do these activities interfere with day-to-day function?	Y □	N □
Stereotyped and repetitive motor mannerisms (e.g. hand and finger flapping or twisting, or complex whole-body movements)
Does he have any mannerisms or odd ways of moving his hands or his body that look the same each time, e.g. flapping hands when excited, walking on his toes, flicking his fingers, spinning or rocking his body, running in a circle?	Y □	N □
Persistent preoccupation with parts of objects
Does he mostly play with objects that light up or make sounds, objects that move or spin, e.g. wheels, fans, running water?	Y □	N □
Does he pay attention only to part of the toy, e.g. spinning the wheels of the car rather than driving it around on a ‘make-believe’ road?	Y □	N □
Does he use toys or objects in unusual ways, e.g. repeatedly opens and closes doors of toy cars, touches most toys to his lips or mouths toys, holds toys very close to his eyes or looks out of the ‘side’ of his eyes at toys?	Y □	N □
Does he have an attachment to unusual objects, e.g. string?	Y □	N □