You will explore three overarching issues in second language acquisition research: the effects of instruction, processing focus on form, and, the interaction approach. The issues explored under the effects of instruction are what aspects of second language acquisition are susceptible to the effects of instruction, the overall (aggregate) effects of instruction, constraining factors that limit or otherwise explain the effects of instruction, and an examination of the contexts of learning (e.g., classroom versus study abroad). The issues explored under focus on form are the roles of practice, explanation and feedback in second language acquisition. The issues explored under the Interaction Approach are what constitutes evidence that learning has taken place as a result of interaction, the outcomes of a focus on form during interaction, feedback during interaction, and attention and awareness.