Test 2
(6) Demonstrator (pointing) counts cubes on blackboard silently and writes the figure 3 in proper place.
In the second sample of this test, when E. counts cubes of model he
(1) counts the three exposed cubes;
(2) touches the unexposed cube with pointer; and
(3) without removing pointer turns model, so that hidden cube comes into view of group. In other respects procedure with second and third samples is the same as with first.
In counting the 12–cube model, E. (1) counts the top row of cubes in the model (left to right), (2) counts the exposed bottom row (right to left), (3) taps with pointer the end cube of hidden row, (4) turns the entire model around and completes his counting. E. then holds model in same place as drawing and counts (in the same order as above) the cubes on blackboard, counting lines between front and top row as representing the hidden row. He then asks demonstrator “How many?” Demonstrator counts the cubes on blackboard (pointing but not speaking) and writes the response.
Throughout the demonstration the counting is done deliberately, not more rapidly than one cube per second.
At end of demonstration E. points to page and says, “All right. Go ahead.” At the end of 2½ minutes he says, “Stop! Look at me and don’t turn the page.”