The committee was evidently less persuaded by the government's
case and concluded that the re-introduction of «contracting -
in» could have a «sizeable negative effect» on the number of union members
participating in political funds and
therefore on the income of the Labour Party.
A large number of individuals with moderately increased risk levels contribute more
cases than a small number with extreme risk levels.41 Parenting programmes that target high - risk populations
therefore miss a substantial number of families who develop the problem even though they are not currently
in the elevated risk group.3, 9,11 The potential impact of such programmes at the population level is
therefore minimal as only a small proportion of families
in the general population
participate in evidence - based programmes.10, 11 As Rose emphasized more than a decade ago, strategies that focus on high - risk individuals will deal only with the margin of the problem and will not have impact on the general population.