I believe the answer is: Script
In psychology, script would determine the set of behaviours that a person tend to do when facing a certain situation. The formation of script usually influenced by several factors, including knowledge, previous experience, relationship with other people, or even personalities.
Answer:
I'd say new and confusing because they did not know how to grow new crops that they weren't familiar with.
Explanation:
I believe the answer is: learning theory
Learning theories refers to the framework that explain how people obtained data/information, process it as a part of learning, and transform it into knowledge. In social settings, things such as emotion, congitive abiltiy, observation of other behaviours, and the influence of other peiople would be seen as crucial factors that affect people's learning rate.