Subject 1, "The Rule"

Subject 2, The Rule

Subject 1 followed a “pattern completion” methodology of trying to figure out the puzzle.  Her line of site moved from left to right to solve the puzzle. Similar to what McKim states, she is ""filling in" [the] incomplete pattern and... "finding" a desired pattern embedded""  with the flow of the shapes moving her line of site from left to right. She visualized this pattern that was removed from Column 1 and deciphered it to figure out the end result of Column 3. Subject 2 also followed a “pattern completion” methodology of trying to figure out the puzzle but his line of site traveled from right to left, in a manner that was more of an addition problem. His perception imagined what shape was needed to complete the shape for Column 1.