DIFFUSION Distance Decay and TimeSpace Compression Models DIFFUSION

DIFFUSION

Distance Decay and Time-Space Compression Models

DIFFUSION Diffusion: the spread of a feature of our world over time Hearth: Origin from which the idea/concept spread from

DIFFUSION BARRIERS What do we mean by diffusion barriers? Attitudes, belief systems, values which oppose cultural diffusion/acceptance Example: Islamic diffusion to Europe in Middle Ages Example 2: Pork to the middle east today (why? ) Example 3: Technology to an Amish community

DIFFUSION Types of Diffusion Expansion Diffusion � The people stay in place (the hearth) and the innovation, idea, trait, or disease does the moving (spreading) � Different types of expansion diffusion… Contagious Hierarchal Stimulus Relocation Diffusion � Actual movement of individuals who have already adopted the idea or innovation, and who carry it from the hearth to a new location (PHYSICIAL MOVEMENT) � This most often occurs through migration

DIFFUSION Expansion vs. Relocation diffusion Expansion= staying strong in hearth and spreading Relocation= movement of people with ideas/ innovations to new place

EXPANSION DIFFUSION HIERARCHAL � Diffusion from the top to the bottom (AUTHORITY) Also works in terms of global cities � � Hearths such as New York City, Paris, Milan Flows to smaller world cities (Chicago) � � Flows to smaller cities yet again Ultimately reaches lowest tiers of global breakdown Culture doesn’t have to be adopted everywhere or by everyone, and often times meets opposition CONTAGIOUS A form of expansion diffusion in which nearly all adjacent (next to, neighboring) individuals and places are affected (OFTEN RAPID AND WIDESPREAD) STIMULUS The underlying principle of a characteristic spreads although characteristic failed.

Culture: expansion diffusion Contagious: Islam Adoption of Hierarchical: Peter the Great and Western culture Stimulus: Internet and necessity of people becoming more apt to use it