The isovector spin responses of deuterium, and integral properties of
these responses of He-4, O-16 and nuclear matter, have been calculated
from realistic models of nuclear forces. The results of these calcula
tions suggest that measurement of these responses of He-2 and He-4, wi
th the (($) over right arrow p, ($) over right arrow n) polarization t
ransfer technique, could give interesting information.