As an adjunct instructor whether it be online or in a traditional classroom setting, it is imperative to provide students with a positive first impression. If a student's first impression of you is positive, you established the necessary credibility to move forward in the student - instructor relationship. However, if a student's first impression is a negative one, it will be very difficult to earn the student's trust.
Suzanne Summers stated that "It's not what you wear, it's how you present yourself that determines what your first impression will be."