Principle 1: Give Direction
Learning Objectives
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What Is Give Direction?
Give Direction means explicitly telling the AI WHO to be, HOW to think, and in WHAT STYLE to respond — before giving any task. It is the highest-leverage principle because it activates fundamentally different knowledge clusters inside the model.
Why It Works LLMs are trained on billions of documents written by different people in different roles. When you say ‘You are a senior Internal Medicine physician’, the model activates training data associated with clinical documentation, medical reasoning, and professional language. Without direction, the model defaults to an ‘average internet voice’ — correct but generic. |
Three Types of Direction
Direction Type | What It Specifies | Healthcare Example |
Persona Prompting | WHO the model is — role, title, experience | ‘You are a senior Internal Medicine physician at City General Hospital…’ |
Style Prompting | HOW it communicates — tone, voice, register | ‘…use clinical, precise language appropriate for an EHR admission note.’ |
Reference Prompting | Whose patterns to follow — specialty or standard | ‘Follow Joint Commission documentation standards for SOAP formatting.’ |
Clinical Persona Impact Table
Clinical Persona | Tone & Style of Output | Best Used For |
Internal Medicine Physician | Clinical, precise, SOAP-structured, ICD-aware | Admission notes, progress notes, differential diagnoses |
Emergency Room Nurse | Urgent, action-oriented, short sentences, triage-priority order | Rapid assessments, handoff summaries, triage flags |
Patient Educator | Simple language, empathetic, jargon-free, teach-back style | Discharge instructions, diabetes education, medication guides |
Clinical Pharmacist | Drug-focused, dose-specific, interaction-aware | Medication reconciliation, allergy review, dosing notes |
Chief Medical Officer | Strategic, formal, policy-language, executive register | Quality reports, board presentations, incident summaries |
Real-Life Healthcare Example — Give Direction
Meet Maria Gonzalez (Patient Thread — Give Direction) Maria Gonzalez, 62, Spanish-speaking, Type 2 Diabetic with early CKD Stage 2, admitted to City General Hospital Internal Medicine unit. The ER nurse has just completed triage. You need an ADMISSION NOTE drafted for the Internal Medicine team.
WITHOUT Direction: Prompt: ‘Write an admission note for a diabetic patient.’ Result: A generic paragraph with no structure, no vital signs template, no ICD codes — unusable clinically.
WITH Direction: Prompt: ‘You are a board-certified Internal Medicine physician at City General Hospital. Write a formal admission note for a 62-year-old Spanish-speaking female patient admitted with uncontrolled Type 2 Diabetes (HbA1c 10.2%) and CKD Stage 2. Use clinical language appropriate for EHR documentation. Include chief complaint, relevant history, and initial assessment.’ Result: Structured, clinically accurate admission note ready for EHR entry — physician can review and sign. |