Final answer:
The Strengths Based Theory is the most appropriate middle range theory for community health nurses working with vulnerable families living in poverty, as it emphasizes individual and community strengths, empowerment, and resilience.
Step-by-step explanation:
When community health nurses work with vulnerable families living in poverty to develop trusting and respectful relationships, the Strengths Based Theory is best suited for such situations. This theory focuses on the individual, interpersonal, and contextual strengths of people rather than their deficits, encouraging empowerment and resilience within the community. When practicing within this framework, community health nurses aim to leverage these strengths in order to foster positive change and well-being within the community.
The Strengths Based Theory aligns well with community psychology by emphasizing the importance of community engagement, empowerment, and the ethical and reflective practice. This approach mirrors the asset-based methods highlighted in Carl Rogers' concept of Unconditional Positive Regard, which underlines the significance of valuing and acknowledging positive traits within the individual and community.