Temporal factors in light work. Paper presented at the Symposium held in Amsterdam, September 1969, sponsored by the International Ergonomics Association.

Test results have been seen most clearly in the skin conductance curves. If the skin conductance is a measure of arousal the behavioural measurements have not, by any means followed prediction. The very fact that the effects looked for occur only in some of the experiments is further evidence that there has been a dealing with an arousal effect which can be manipulated at the will of the subject and over which the experimenter may have only partial control.