Recently in Demonstrations Category

In the late 1960s, psychologist Walter Mischel performed a series of tests on preschoolers referred to as The Marshmallow Tests. Mischel would give a child a single marshmallow, then leave him or her alone in the room with it. Before he departed, he'd make each kid an offer: if they wanted to, they could eat it immediately -- but if they waited for him to return, they'd get two marshmallows. The tests were designed to examine willpower and the mental processes behind delayed gratification. Watching kids go through the experiment can be poignant... and adorable.

http://www.huffingtonpost.com/2009/09/18/marshmallow-test-video-a_n_291086.html

This is a collection of java animations for various biopsychology or neuroscience phenomena aimed at an undergraduate audience.  Explanatory text will be added as time permits (and there is never enough time).  Currently most of the animations are in the area of sensory physiology. 

http://psych.hanover.edu/JavaTest/NeuroAnim/index.html