Complex sentence: Children from 6-13 years old looked at colored pictures of real world scenes that were manipulated by color, location of objects, or the removal of objects, in the central or peripheral focus of the image.
Split into simpler sentences: Children from 6-13 years old looked at colored pictures of real world scenes that were manipulated. Manipulations were color, location of objects, or the removal of objects, in the central or peripheral focus of the image.