Researchers have found out that in parent-child relationships, information derived from the child's spontaneous disclosure in daily activities was most closely connected to generating and maintaining their trust in parents, indicating the importance of developing shallow but broad relationships with children through everyday conversation rather than long-lasting profound lectures (Kerr, Stattin & Trost, 1999). Honeycutt used the SPT model, along with the Attraction Paradigm, to analyze happiness between married couples. While the SPT model believes that relationships are grounded on effective communication, the Attraction Paradigm believes that relationships are grounded on having shared interests, personality types, and beliefs. The results showed that having a perceived understanding of each other can lead to happiness between married couples. While the research notes that it looks only at perceived understanding and not actual understanding, it shows the importance of relationship development. The more that partners in a relationship interact with each other, the more likely they are to have a better understanding of each other.  Scholars also use this theory to examine other factors influencing the social penetration process in close friendships. As Mitchell and William (1987) put it, ethnicity and sex do have impact on the friendship foster. The survey results indicates that more breadth of topics occurs in penetration process in black friendship than white. Regarding the caregiver-patient relationship, developing a social penetrated relationship with institution disclosed breadth and depth information and multiple effective penetration strategies is critical to the benefits of the patients (Yin & Lau, 2005). Nurses could apply the theory into daily interactions with patients, as doctors could in their articulations when consulting or announcing.