Realism has been the dominant approach in the philosophy of science fo
r the last 20 years. Realist philosophy has also been widely employed
across a range of social sciences. Unfortunately, these powerful intel
lectual currents have not reached the shores of nursing which appears
trapped in a time-warped debate about 'qualitative' (constructivist) a
nd 'quantitative' (positivist) approaches. This paper argues that both
positivism and constructionism are seriously flawed as philosophies o
f social and natural science. This is in marked contrast with realism
which is a philosophy of both the natural and social sciences. I there
fore propose that realism should be adopted as a radically different n
ew paradigm for a unified biopsychosocial nursing.