Emphasis was shifted from <u>experiments</u> in the academic laboratory to the application of phycology to the issues of teaching and learning.
Transition took place from controlled environments to focusing the interest on real ones, each of them totally different from others and where external conditions affect human reactions, for example, the socioeconomical, cultural or familiar conditions of students in teaching and learning processes are going to affect their responses to the metodologies they are exposed to. This cannot occur in an artificially controlled environment such as a laboratory.
It is maybe true or maybe false
The one that is an example of a social barrier to cultural diffusion is :
Laws that prohibit western-style clothing
This will prevent a lot of western people to enter that specific region because they're afraid to get into trouble
hope this helps