The Infant/Toddler Symptom Checklist (ITSC) is designed to screen 7 to 30 month-old infants and toddlers for sensory and regulatory disorders who are behaviorally problematic and show disturbances in sleep, feeding, state control, self-calming, and mood regulation. The checklist focuses on infant behavior in the following domains: (1) self-regulation, (2) attention, (3) sleep, (4) eating or feeding, (5) dressing, bathing, and touch, (6) movement, (7) listening and language, (8) looking and sight, and (9) attachment/emotional functioning. Questions are answered with a “never or sometimes,” “most times,” or “past.” The criterion-referenced ITSC checklist comes in six versions: a single short version for general screening purposes and five age-specific screens for both diagnostic and screening purposes: 7 to 9 months, 10 to 12 months, 13 to 18 months, 19 to 24 months, and 25 to 30 months. The authors recommend using other observation tools when using ITSC as a screening tool and traditional developmental tests when using it as a diagnostic tool. (Kisker et al., 2011)