Science Buddies: "Ask an Expert"

how do words get into our brain?how do words affect your memory?

The specific branch of psychology that you're asking about here is "cognitive psychology". Doing a Google search on 'word memory cognitive psychology' yielded a lot of interesting results that should be able to help you out in your research. The second search result was a web page providing an introduction to cognitive psychology as it relates to memory (http://www.scism.sbu.ac.uk/inmandw/tuto ... /index.htm) - it might be slightly difficult to read but it's worth the effort.