• Lack of or delay in developing spoken language.
• Stereotyped or repetitive use of language.
• Little or no eye contact.
• Lack of interest in peer relationships.
• Lack of spontaneous or make-believe play.
• Repetitive motor mannerisms e.g., hand-flapping, finger-flicking, twirling objects.
• Persistent preoccupation with parts of objects.
• Inflexible adherence to specific, nonfunctional routines or rituals.
