Summary.—A study conducted by Stamps (2011) examines the effect of boundary height on perceived enclosure based on an experiment asking participants to scale a set of images. The experiment and results are quite instructive. However, some parts of this experimental design should be reconsidered by future researchers because the provided images may not support accurate perceptual recognition in a full 360-degree view and some irrelevant factors should be excluded to the extent possible in realistic designs, conditions, and stimuli.