Practicalism, the view that science should serve practical ends, when stronger than the spirit of disinterestedness, can corrupt the process of investigation. Science, as the attempt to understand nature’s ways of working, knows nothing of practicalism, for scientific knowledge is neither useful nor useless, in itself. It only becomes so when taken in relation to interests other than scientific, interests which may shift with the tide of social change. (p. 365)
Michell, J. (1997). Quantitative science and the definition of measurement in psychology. British Journal of Psychology, 88, 355-383.