Answer:
social-cultural influences
Step-by-step explanation:
Social-cultural influences are are the larger scale forces and influences within cultures and societies that affect the thoughts, feelings and behaviors.
These larger scale of influences determines how cultures and societies affect how people act, what they feel and what they think.
The feeling of pain on the keyboard operators that cant be attributed to any physical discernable abnormalities is going to be attributed to a large scale force, because it affected the feelinh of people.