Nevin's Leadership Behavior is Relationship Oriented Leadership.
This type of leadership is focused on motivating and supporting people of the team. Providing sufficient interacting chances of the people with each other is also the main part of this leadership. This type of relationship helps in improving the relationships of the team member with each other and with the leader as well. It encourages better work and collaboration through good communication.
Relationship oriented Leadership helps generate the greatest results with the collective effort of the members within the team.