A second group of measures estimates attention and executive function. These tests typically evaluate functioning related to several different aspects of information processing. The Trail Making Tests, for example, scatter sequential numbers (e.g. 1, 2, 3, 4)around different locations on a sheet of paper. The child is asked to draw lines to connect the numbers in sequence. Part B of the test adds scattered sequential letters, and the child must, for example, start at 1, go to A, then go to 2, then B, and so on. The test evaluates several cognitive skills including attention, sequencing, and thought processing.