Sentence:  The efforts of various interest groups to control or influence governmental decisions , particularly when taken in conjunction with the impact of industrialization , led to a concentration of <WSD>attention</WSD> on the legislative power and the means whereby policy could be formulated and enforced as law through bureaucratic institutions . 
Meaning of the word marked with <WSD> tags:  the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others