Cultures, by predisposition, both embrace and resist change, depending on culture traits. For example, men and women have complementary roles in many cultures. One gender might desire changes that affect the other, as happened in the second half of the 20th century in western cultures. Thus there are both dynamic influences that encourage acceptance of new things, and conservative forces that resist change.
Three kinds of influence cause both change and resistance to it:
- forces at work within a society
- contact between societies
- changes in the natural environment.[19]
Cultural change can come about due to the environment, to inventions (and other internal influences), and to contact with other cultures. For example, the end of the last ice age helped lead to the invention of agriculture, which in its turn brought about many cultural innovations.
In diffusion, the form of something (though not necessarily its meaning) moves from one culture to another. For example, hamburgers, mundane in the United States, seemed exotic when introduced into China. "Stimulus diffusion" refers to an element of one culture leading to an invention in another. Diffusion of innovations theory presents a research-based model of why and when individuals and cultures adopt new ideas, practices, and products.
"Acculturation" has different meanings, but in this context refers to replacement of the traits of one culture with those of another, such has happened to certain Native American tribes and to many indigenous peoples across the globe during the process of colonization. Related processes on an individual level include assimilation (adoption of a different culture by an individual) and transculturation.
Cultural invention has come to mean any innovation that is new and found to be useful to a group of people and expressed in their behavior but which does not exist as a physical object. Humanity is in a global "accelerating culture change period", driven by the expansion of international commerce, the mass media, and above all, the human population explosion, among other factors. The world's population now doubles in less than 40 years.[20]
Culture change is complex and has far-ranging effects. Sociologists and anthropologists believe that a holistic approach to the study of cultures and their environments is needed to understand all of the various aspects of change. Human existence may best be looked at as a "multifaceted whole." Only from this vantage can one grasp the realities of culture change.
