Note 40 — VI The Properties of Organized Wholes

We may remark however that, for adults, one more condition must be fulfilled if we wish to transpose, without altering, specific form: most forms show a changed aspect as forms when they are turned around, for instance, upside down. This fact reveals a curious anisotropy of the visual field, which does not seem to exist in early childhood (Cf. W. Stern, Zschr. f. angew. Psychol., 1909, and F. Oetjen, Zschr. f. Psychol., 71, 1915). On the other hand, Wertheimer has laid stress upon the point that, for a given form, not all relations of stimulation are equally important. Some of them may be changed considerably without any remarkable effect upon the actual form.