Question

How does the type and length of contact affect the development of primary groups

Answer 1

The answer is: Time, organization, and size

As the length of contact increased, the more time you would spend with the groups. This often correlated with the increase in size of the organization (even though larger organization tend to develop its own members division and not all members would know one another)

Answer 2

Time, organization, and size affects the development of primary groups.