Golding is not at all the source of those ideas. The real person behind it, inspired by German historian Max Weber in part, was the 'father of social sciences,' Wilhelm Dilthey.
His elementary operations of cognition are:
-Differentiation -- perceiving gradations of difference by degree
-Separation -- using the mind to consider one aspect of an object without considering another, e.g. the shape of a leaf, but not its colour, or vice-versa.
-Abstraction -- focussing in on only one property of an object, such as the colour, while discarding consideration of any other properties;
-Synthesis -- forming associations and drawing equations between different notions, such as the color of a leaf and the idea of your curtains, before you decide on a color.
Beyond these elementary operations lies the realm of free imagination (which he didn't consider rational).
People like Golding and other thinkers who are theorists in education seem to recycle or re-invent the wheel here over and over.