Submit a 2-page paper in which you: 
Explain why it is important to use theory in family therapy. How does theory help social workers understand and assess a family?
Apply systems theory and a developmental perspective to the Hernandez family. How would this perspective inform your assessment? 
Select a validated assessment tool from the Van Hook chapter that you would use to assist with your assessment of the Hernandez family. How would this assessment, including results from your chosen assessment tool, inform the treatment plan? 
Use the Learning Resources to support your Assignment. Make sure to provide APA citations and a reference list.