The term âcarrier oilâ encompasses hundreds of different oils and butters. In the most basic sense, the word âcarrierâ serves to distinguish oils that are not âessentialâ oils. Common carrier oils include olive oil, coconut oil, shea butter, cocoa butter, grapeseed oil, canola oil, sweet almond oil, walnut oil, and more. The oils in this category vary wildly in terms of texture, colour, thickness, nutritional composition, and scent, but generally they are our base oils/butters.
In order to proceed with his research, Ebbinghaus had first to invent stimulus materials. These needed to be relatively simple, neutral as to meaning, and homogeneous. They needed to be available in large numbers and to allow quantitative manipulation of the amount of material to be retained.
Ebbinghaus. The first 80 years of research on memory is a story of changing assumptions about the nature of memory. The earliest researchers, such as Ebbinghaus, assumed that memory was a process of receiving experiences and storing them away to be recalled later. Gradually the picture grew more complicated.