Acentral focus in developmental research is plasticity, which refers to:

Plasticity or brain plasticity refers to the brain's capacity to change throughout life. It is centered around the notion that many aspects in a person's brain can suffer alterations even through adulthood. Basically it defies the idea that we are "hard-wired" as humans. Learning is appointed as a main contributor to the increase of brain plasticity, this is largely due to the brain's capacity to form new connections (synapses) between neurons (brain cells) when presented with new scenarios, it is consistently reorganizing itself, creating and pruning (removing) synapses. 

The haitian revolution was the result of a long struggle on the part of the slaves in the french colony of st. domingue, but was also propelled by the free mulattoes who had long faced the trials of being denoted as semi-citizens. this revolt was not unique, as there were several rebellions of its kind against the institution of plantation slavery in the caribbean, but the haitian revolution the most successful. this had a great deal to do with the influence of the french revolution, as it to inspire events in haiti. the haitian revolution would go on to serve as a model for those affected by slavery throughout the world.

The id is the component of the personality that includes all of the individuals basic biological drives