[header] How to discover your child's abilities [title] Have your child take an intelligence test. [step] Sign your child up for a formal intelligence quotient (iq) test done by a professional. Iq tests are designed to give you a general idea of your child's intelligence. 
In this sense, intelligence is defined as cognitive abilities and the quickness that a person processes information. Fundamentally, iq tests are supposed to measure broad intelligence, not general knowledge.