Dependent childrenA son or daughter is dependent when the child:is under the age of 22 and does not have a spouse or common-law partner;is over the age of 22 and has been continuously enrolled as a full-time student and depended substantially on the financial support of a parent since before the age of 22;became a spouse or a common-law partner before the age of 22 and has been continuously enrolled as a full-time student and depended substantially on the financial support of a parent since becoming a spouse or common-law partner, oris over the age of 22 and depended substantially on the financial support of a parent since before the age of 22 because of a physical or mental condition.http://www.cic.gc.ca/english/immigrate/sponsor/spouse-apply-who.asp#definitions