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How to Develop and Test Investigation Theories Part 4

THEORY How to Develop and Test Investigation Theories Part 4

BrentDaug

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## COMMON THEORY DEVELOPMENT MISTAKES

### Mistake 1: Confirmation Bias

**Problem:** Only looking for evidence that supports your preferred theory

**Example:**
You believe Person A is guilty, so you:
- Notice all evidence pointing to Person A
- Ignore evidence pointing to others
- Interpret ambiguous evidence as supporting guilt
- Dismiss contradictory evidence as unreliable

**Solution:**
- Actively seek evidence that contradicts your theory
- Give equal attention to all theories
- Have others review your reasoning
- Document why you rejected contradictory evidence

---

### Mistake 2: Complexity Bias

**Problem:** Preferring complicated theories over simple ones

**Example:**
**Complex Theory:** Subject was kidnapped by organized crime ring, held for weeks, then disposed of in elaborate cover-up involving multiple conspirators

**Simple Theory:** Subject had car accident on remote road, hasn't been found yet

**When both explain the evidence equally well, the simpler theory is usually correct (Occam's Razor)**

**Solution:**
- Start with simplest explanations
- Only add complexity when evidence requires it
- Question whether elaborate scenarios are necessary
- Remember: Real life is usually not a conspiracy thriller

---

### Mistake 3: Anchoring on First Theory

**Problem:** Sticking with your initial theory despite new evidence

**Example:**
- First impression: "This looks like voluntary disappearance"
- New evidence contradicts this
- Instead of changing theory, you explain away contradictions
- Original theory becomes increasingly convoluted to fit new facts

**Solution:**
- Treat initial theories as tentative
- Regularly re-evaluate as evidence accumulates
- Be willing to completely change theories
- Document theory evolution transparently

---

### Mistake 4: Emotional Investment

**Problem:** Becoming attached to theories for personal reasons

**Example:**
- You want to believe victim is still alive
- You dislike a suspect and want them to be guilty
- You developed a theory and feel proud of it
- You publicly stated a theory and don't want to be wrong

**Solution:**
- Recognize emotional investment when it occurs
- Separate wishes from evidence
- Focus on what evidence says, not what you hope
- Remember: Being wrong is part of investigation

---

### Mistake 5: Treating Theories as Facts

**Problem:** Stating theories as if they're proven

**Example:**
**WRONG:** "The subject was murdered by their partner"
**RIGHT:** "Theory: Subject may have been harmed by partner - 45% probable based on relationship conflict evidence, but no direct proof"

**Solution:**
- Always qualify theories with confidence levels
- Use language like "possibly," "likely," "suggests"
- Distinguish between "what we know" and "what we think"
- Update probability ratings as evidence changes

---

## THEORY DOCUMENTATION TEMPLATE

Use this template to document your theories:

THEORY DOCUMENTATION

Case Name: _______________________
Theory ID: _______________________
Theory Name: _______________________
Developed By: _______________________
Date: _______________________

THEORY STATEMENT:
[One paragraph explanation of what you believe happened]

SUPPORTING EVIDENCE:
1. [Evidence item] - [Strength: High/Medium/Low]
2. [Evidence item] - [Strength: High/Medium/Low]
3. [Evidence item] - [Strength: High/Medium/Low]

CONTRADICTING EVIDENCE:
1. [Evidence item] - [Strength: High/Medium/Low]
2. [Evidence item] - [Strength: High/Medium/Low]

REQUIRED CONDITIONS:
1. [What must be true for this theory to work]
2. [What must be true for this theory to work]

PROBABILITY RATING: ___%

CONFIDENCE LEVEL: [High/Medium/Low]

REASONING:
[Explain why you assigned this probability rating]

ALTERNATIVE THEORIES CONSIDERED:
1. [Alternative theory] - [Why this theory is preferred/rejected]
2. [Alternative theory] - [Why this theory is preferred/rejected]

TESTS CONDUCTED:
1. [How theory was tested] - [Result]
2. [How theory was tested] - [Result]

REMAINING QUESTIONS:
1. [What still needs to be answered]
2. [What still needs to be answered]

NEXT STEPS:
1. [What research would strengthen or weaken this theory]
2. [What research would strengthen or weaken this theory]

VERSION HISTORY:
v1.0 - [Date] - Initial theory developed
v1.1 - [Date] - Updated based on [new evidence]
v2.0 - [Date] - Major revision because [reason]
 
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