chapter  4
3 Pages

Sampling

In three cases too many of the relevant documents were missing, and in three more the files, apart from test material, were completely missing.

The 562 cases were thus reduced to 550.

REDUCED SAMPLE OF 500 Study of the main sample of 550 showed that it contained certain non-representative groups, some being selected special cases proved at an early stage to have been unsuitable for Approved School committal, and therefore falling out of the ranks at this point.