This is taken from the AKC Earthdog Rules and Regulations:

During the hunt to the den portion of the test, the dog is judged
on the following qualities:



Searching Ability - evidenced by an aptitude to range a controllable
distance away from the handler and cover ground in a vigorous search for
quarry and an aptitude to recognize promising cover and by eagerness to
explore it, regardless of hazards or discomfort.

Obedience to Commands - demonstrated by the dogs' attentiveness and
responsiveness to the handler. A dog should at all times be under the
control of the handler.

Endurance - demonstrated by the capacity to compete through the duration of
the test and to go on as long as it may be necessary.

Patience - evidenced by a willingness to stay with a problem encountered as
long as there is a possibility of achieving success in a workmanlike manner,
rather then taking a chance finding the quarry more quickly through
guesswork or gambling.

Adaptability - being able to adjust quickly to changes in scenting
conditions and being able to work harmoniously with a variety of running
mates.

Independence - the ability to be self-reliant and to refrain from becoming
upset or influenced by the actions of faulty brace mates.

Cooperation - demonstrated when a dog works harmoniously with others, doing
as much of the work as possible in an honest and efficient manner and yet
being aware of and honoring the accomplishment of running mate without
jealousy or disruption of the test.