Dhana, Crane's web sites are surely useful for all aspects of IB Psychology. He also has a group here in Diigo, which you might also find helpful.

Carol Dweck

Interesting ideas that can help us in teaching critical thinking.

This site will help you keep up-to-date with the latest psychology research. You could find some experimental studies that can be replicated, but that's not so easy and you might have to do quite a lot of searching.

This section of the site is dedicated to support for the internal assessment [IA]. In addition to guidelines for setting up and carrying out the IA, there are materials to help students monitor their own progress, tips for assessing the drafts, ideas for studies to replicate, and samples of good papers.