Final answer:
Kelly's findings that many dating couples grew up in the same neighborhood are explained by the proximity principle, indicating that physical closeness increases interaction and the likelihood of forming relationships. Additionally, similarity in backgrounds and interests contributes to relationship formation due to common ground facilitating connections.
Step-by-step explanation:
The observations made by Kelly in her graduate study align well with the proximity principle. This concept suggests that physical closeness is a significant predictor of relationship formation because it increases the frequency of contact between individuals. The chance encounters and interactions that come from living in the same area or neighborhood facilitate the opportunity to form connections, whether they be friendships or romantic relationships.
Another influential factor in relationship formation is similarity. People often gravitate towards those who share their backgrounds, attitudes, and lifestyles. This is known as homophily. Similarities make it easier to connect and share experiences, as common interests and viewpoints provide a smooth foundation for interaction and understanding between people.