Do the levels of stimulation an individual receives as a child matter? Mark R. Rosenzweig, Edward L. Bennett, and Marian C. Diamond believe that it does. According to them, an adequate amount of stimulation can actually raise the ability to learn and increase the size of certain parts of the brain that are used in the learning process.

In 1785, studies by an Italian, anatomist named Malacarne found more complicated folds and fissures in animals who had received extensive training, than with those who had not. Malacarne would train a group of animals (the variable) and not train another group (the control group), then dissect the animals' brains to see which were more complex. This study by Malacarne was dropped however for unknown reasons.

Rosenzweig, Bennett, and Diamond performed an experiment similar to Malacarne's in order to test the theory that the more stimuli

My experience with cases of stimulation to the brain would also tend to support that theory. I have been around young children a lot since my best friend's mother is a baby-sitter and I have noticed a difference in the children who are played with (stimulated) and those that are left to themselves. The children that are stimulated are quicker in learning to walk and talk as well as being responsive to interaction. For example, there were two toddlers at this friend's house whom his mother would often baby-sit. One was always being touched and played with and he picked up words fairly quickly. He would then repeat them to you over and over, eventually figuring out what they meant and using them to get what he wanted. The other toddler was usually left to his own devices and he was usually in his pen with no toys and very little direct contact with others. This toddler was not able to speak and could not even

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Approximate Word count = 615
Approximate Pages = 2 (250 words per page double spaced)