insistence on sameness, or resistance to change;

difficulty in expressing needs, and use of gestures or pointing instead of words;

repetition of words or phrases instead of normal, responsive language;

laughing, crying, or showing distress for reasons not apparent to others;

preferring to be alone or acting aloof;

throwing tantrums;

difficulty in mixing with others;

aversion to physical contact;

little or no eye contact;

lack of response to normal teaching methods;

sustained odd play;

spinning objects;

inappropriate attachments to objects;

apparent over-sensitivity or under-sensitivity to pain;

lack of real fear of danger

noticeable physical over-activity or extreme under-activity;

uneven motor skills; and