A dependent child may qualify to receive benefits based on your earnings record. To receive benefits, your child must be unmarried and be under age 18 (or 18 to 19 if a full-time student in elementary or secondary school) or be 18 or older and disabled from a disability that started before age 22. Your child may be your biological child, adopted child, stepchild, or dependent grandchild. Your qualifying child may receive a benefit that is up to one-half of your full retirement benefit.