Operationalization is not a synonym for the dualistic view of subjectivity and objectivity;the process of operationalization is not discovering objective facts;it is a sort of explanation.The formal system built by researchers is not a mirror but an isomorphic design based on the external world....
As a quick and current confirmatory check only of the topic’s proliferation, a Google Scholar search (March, 2015) was made of titles since Mackworth in 1948 and revealed 8,140 results for vigilance and 1,540 results for its synonym sustained attention in the title only; the sum together ...