 Effective visual preference surveys are precise in exploring which variables they are attempting to measure, whether it be street trees, bike lanes, crosswalks, or any number of proposed changes.Nelessen and other practitioners have addressed this issue through the use of simulated or manipulated imagery using Adobe Photoshop or any number image manipulation software.In practice, this may involve taking exactly the same picture, yet adding a single element to the second picture to gauge community reaction to a proposed change.