This book provides a full account of a totally new approach to making international comparisons in the field of special needs education. It makes comparisons of students with disabilities, learning or behaviour difficulties and disadvantages on the basis of the additional resources made...

Results from this study of the extent and implications of attrition for three longitudinal household surveys from Bolivia, Kenya, and South Africa suggest that multivariate estimates of behavioral relations may not be biased because of high attrition. This suggests that demographers and other...