Sentence:  While expensive in time and involving a great deal of adaptation on the part of the worker ( in terms of his willingness to leave the sanctity of his office and enter actively into the client 's life ) , techniques of accompaniment were <WSD>found</WSD> to be of tremendous value when in the service of specific preventive objectives . 
Meaning of the word marked with <WSD> tags:  establish after a calculation, investigation, experiment, survey, or study