Children between the ages of five and twelve perform tasks dealing with quantity length area and volume to illustrate the Piagetian concept of conservation The childrens differing approaches to the ...

An extension of discrimination-learning theory based on the inhibition of stimulus intensity was proposed as a mechanism of cognitive development. According to this discrimination-inhibition theory, ...

There's a whole world under the surface and only Ron has any idea about it. And sometimes the two worlds collide, and sometimes they don't. Ron holds them at arm's length from each other. Watch every ...