I want to research how language and speech develop in infants and how they extend into adulthood and also how they differ across cultures. One of the sources I picked was from the slides from my other psychology class. The slides mostly talked about the first words and sentences that infants speak and although this is not my research question, it answers some of the sub – questions that I am trying to answer in my paper. I categorized my source as a background because while it is important, it is not the most important source and does not really play a role in the main part of my essay. It could also be considered “common knowledge”. In my essay, I want to start of by explaining how infants begin talking and how they learn the meaning of words and share some studies done by researchers to support my point. Then I want to move on to talking about how they develop language or languages and how this develops into adulthood. Then I want to talk about how languages differ from each other, mostly English. Since this source mostly talks about the first words of infants, I want to focus on that and how exactly infants learn to understand the meaning of words and how.