I've spent the last few years working part-time on a joint project
with three members of the Clinical Psychology Department. The project
has been funded by the Department of Health. The package we've
produced is designed to be used by children to describe how they feel
about places, people and events. It runs on 
Macintosh systems.
I wrote up the development of the package as an MPhil thesis. This took a long time because I'm not used to writing very large documents!
The package consists of a series of modules, which are designed to be used by a trained interviewer. The modules allow the interviewer and child to explore the child's "universe". The modules that existed when I wrote my thesis were:
Introduction
Emotions I
Emotions II
Buildings
People
Child
Emotions & People
Pain
Environments
Here's more information about the package modules, and here's my thesis on-line.