Studying Personal Space and Relationships

Discuss the research methods of a person interested in studying personal space and relationships.

He gathers a number of students who are strangers, acquaintances, close friends, or in romantic relationships. He brings them into a classroom and asks them to begin a conversation with each other. He records the distance between the individuals having the conversation. Which research method was used? Identify the information in the scenario that supports your reasoning. What ethical guidelines would need to be followed to conduct this study? Which basic ideas behind early approaches in psychology most closely align with this method?