Description: This poster discusses research on the lasting behavioral effects of altered prenatal development of the brain. Abstract: The period of prenatal development is a time when a developing brain is very sensitive to outside influences, such as maternal intake of drugs and alcohol. The effects these teratogens can have on postnatal behavior range from non-existent to devastating and irreparable. At birth, specific brain areas are shown to be impacted by certain drugs while in some cases the brain as a whole is just underdeveloped and underweight. Both complications have consequences on the offspring. There have been studies showing the behavioral deficits that are noticeable during infancy to be just as prominent in the child during teenage years. The differences in behavior between control children and those that were exposed to teratogens of this nature will be compared. In the author's future research, the author hopes to find out why the offspring's brain is not able to repair itself over the years when research tells us that this is the time in which the brain has the most plasticity. The author plans to do a meta-analysis on all the available research to find out the answer to this important issue.