Several researches conducted with laboratory animals seem to suggest an affirmative answer to this question. The free cats make fewer errors and thus catch more mice than the restricted cats. In another word, the 'A' restricted cats perform not much better than the 'C' free cats. The Biophysics of 'Restricted Cats' Biophysics findings indicate that all humans are born with about the same number of brain cells. Brain cells are basically storage devices and the 'real' brain or intelligence is set by one's ability to associate the right cells for the right purpose at the right time.
Human intelligence is roughly proportional to the number of brain-cell links.
However, projections and creative associations do require more sophisticated 'data mining' capabilities. An infant's intelligence develops at a rate set mainly by the environment surrounding it - external stimuli, nutrition, sense of security, etc. By the age of 4 or 5, a child's IQ capacity is more or less set and it becomes evident even at this early stage that all children are not equal intelligence-wise. Some kids are 'smarter' than others. Statistically speaking, roughly one third of the kids of a given age group are 'A' pupils, one third 'B' and one third 'C'.