Analysts working closely with Government assert that it is too soon to make valid assessments about the instigators of the violence.

Whether we are considering foreign policy, domestic issues or personal relationships, it is critical to assess multiple viewpoints in order to understand and develop valid assessments.

It follows that in a case such as the present there can be no valid assessment.

We expect to get a truthful and valid assessment of the situation.

It is important to differentiate between measurement of conscious and unconscious processes in order to make valid assessments.

"But that is not a valid assessment of Fed thinking or of market direction," he said.

What is not readily to hand is a valid general assessment of the damage which the disposals may be doing.

Standards which do not enable valid and reliable assessment are of little value to end users.

In addition, action is being taken although no valid assessment of the sector has yet been carried out.

A valid assessment is one which measures what it is intended to measure.