1.   A control group had to be examined as well as the group that we are studying.

2.   Administration can be done by double-entry book-keeping, but is quicker and cheaper if the core group has access to a computer.

3.   Because different groups have different values and understandings of right and wrong, the state would have to be neutral between them.

4.   Both groups had d power base of expertise.

5.   Community groups do not have enough say over what is built in their neighbourhoods.

6.   Each group has its insular concerns and each is locked within the tunnel vision of its own experience and tangible self-interest.

7.   Even better, the group has many species, some of which will cross in the laboratory.

8.   Lower social groups had a higher average family size.

9.   Most frequently the group had several alternative plants to consider for closure rather than an obvious choice.