The idea that we think about relatively abstract domains (like time) in terms of more concrete domains (like space) but not vice versa can be traced to conceptual metaphor theory. Experiments using verbal and/or visual stimuli suggest a deep ontological basis for space-time asymmetries. Yet vision makes a privileged contribution to spatial processing raising questions about modality. Recently, ...

T he burgeoning of interest in primary care in the United States provides the family medicine community with an opportunity that should not be missed, but one that we are close to wasting. Family medicine is person-focused, not disease-focused; i.e., the rationale for the discipline is based on the health of people and populations, not the one-by-one counting of diseases, their diagnosis and ...

How are space and time represented in the human mind? Here we evaluate two theoretical proposals, one suggesting a symmetric relationship between space and time (ATOM theory) and the other an asymmetric relationship (metaphor theory). In Experiment 1, Dutch-speakers saw 7-letter nouns that named concrete objects of various spatial lengths (tr. pencil, bench, footpath) and estimated how much tim...

The recent selection of a complex ribozyme capable of general polymerization on a template in trans has revealed how catalysts may have arisen from one another in the RNA world.