Having an extensive vocabulary is considered a good indicator of verbal intelligence. IQ tests measure verbal abilities through questions covering vocabulary, analogies between words and concepts, comprehension of written material, synonyms and antonyms, verbal puzzles, similarities and differences between objects and short-term memory, such as the ability to recall a string of numbers or words.
A person with high math abilities can not only perform basic arithmetic, but also calculate more advanced concepts. IQ tests measure mathematical skills with questions that require you to fill in the next number in a sequence, work with geometric shapes and decipher math puzzles. Some tests measure analytical reasoning with word problems that must be computed mentally.
These questions measure your ability to mentally envision and manipulate 3D objects. Sometimes, when a test is administered to a child, she is asked to manipulate physical blocks. When testing is done within a group, however, the object is shown on the page and the test taker must choose the answer that depicts the way the object would look if it were manipulated in some way. The test may also show pieces of a disassembled object and ask how the object would appear when assembled.
A person's ability to think using logic is a measure of intelligence because it determines how well she can extrapolate or deduce additional knowledge based on information she is given. To measure logical thinking, IQ test questions supply a certain amount of information and ask the test taker to provide additional data or draw conclusions from the information supplied. In simpler terms, they measure a person's ability to reason. One way to test this ability is to show a series of pictures and ask which picture would come next or which is missing.