Diffusion and its variations.
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| 232827028 | Diffusion | The act of dispersing or diffusing something, ideas, fashions, even people; the spread of social institutions (and myths and skills) from one society to another. | |
| 232827029 | Expansion Diffusion | An innovation or idea develops in a HEARTH and remains strong there while also spreading outward. Relevance: the spread of Islam from Arabian Peninsula to North Africa, through Southwest Asia, into West Africa | |
| 232827030 | Contagious Diffusion | A form of expansion diffusion in which nearly all adjacent individuals and places are affected. | |
| 232827031 | Hierarchical Diffusion | The spread of a feature or trend from one key person or node of authority or power to other persons or places. | |
| 232827032 | Stimulus Diffusion | The spread of an underlying principle, even though a specific characteristic is rejected. Weird, improbable, different, or unnattainable ideas that aren't accepted readily, but may slowly have and indirect impact through research promotion or new ways of doing things. e.g. MacDonalds in India. | |
| 232827033 | Relocation Diffusion | The actual movement of individuals who have already adopted an idea or innovation and who carry it to a new perhaps distant location where they proceed to spread it; often through migration |
