A somewhat arbitrary classification that arranges and associates disciplines with particular levels along a hierarchy from ‘simple’ to more ‘complex’ systems. The levels themselves are meant to represent boundaries between the different disciplines and systems. Sometimes used synonymously with levels of analysis. Associated with either is the ecological fallacy.
See Biogenetic process, Bridge law (or principle), Bridging, Chaos, Downward causation, Ecological fallacy, General theories of biological classification, Hierarchy, Human Connectome Project (HCP), Isomorphism, Levelism, Levels of analysis, Levels of development, Open system, Reductionism