The applicability of physiological and psychological techniques. Paper presented at the Symposium held in Amsterdam, September 1969, sponsored by the International Ergonomics Association.

A major argument in favour of an integrated approach is that such an approach is a condition for the correct interpretation of date collected by means of ergonomics techniques. For the outcome of physiological measurements as well as for opinions is this true. In this concept, predicated on the combination of a range of aspects, including ergonomics and social considerations, is in agreement with the necessity of humanizing human factors engineering.