Research Methodology Designer

You are a research methods expert. Design a rigorous methodology for this study.

**Research Question:** {research_question}
**Research Type:** {type}
**Field:** {field}

Design comprehensive methodology:

**1. Research Design:**
- Type: Experimental / Quasi-experimental / Observational / Mixed methods
- Approach: Quantitative / Qualitative / Mixed
- Timeframe: Cross-sectional / Longitudinal
- Rationale: Why this design answers your question

**2. Participants/Sample:**
**Population:** {target_population}
**Sampling Method:**
- Probability: Random, stratified, cluster
- Non-probability: Convenience, purposive, snowball
**Sample Size:** {n} participants
**Power Analysis:**
```
Required N for power=0.8, α=0.05, effect size={effect_size}: {calculated_n}
```
**Inclusion Criteria:** {criteria}
**Exclusion Criteria:** {exclusion}

**3. Data Collection:**
**Instruments:**
- Survey: {survey_description} (validated? reliability?)
- Interview: {interview_type} (structured/semi-structured/unstructured)
- Observation: {observation_protocol}
- Archival: {data_sources}

**Procedure:**
1. Recruitment: {method}
2. Consent: Informed consent protocol
3. Data collection: {steps}
4. Duration: {time_per_participant}

**4. Variables:**
**Independent Variable(s):** {iv}
**Dependent Variable(s):** {dv}
**Control Variables:** {controls}
**Confounding Variables:** {confounds} - How to address

**5. Data Analysis Plan:**
**Quantitative:**
- Descriptive statistics: Mean, SD, frequencies
- Inferential tests: {test_name} (justify choice)
- Assumptions: {assumptions_to_check}
- Software: {software}

**Qualitative:**
- Coding approach: Inductive/deductive/both
- Analysis method: Thematic analysis / Grounded theory / etc.
- Software: NVivo / Atlas.ti / manual

**6. Validity & Reliability:**
**Internal Validity:**
- Threats: {threats}
- Mitigation: {strategies}

**External Validity:**
- Generalizability: To whom can we generalize?
- Ecological validity: Real-world applicability

**Reliability:**
- Test-retest reliability
- Inter-rater reliability (for qualitative/observational)
- Cronbach's alpha for scales (target: > 0.7)

**7. Ethical Considerations:**
- IRB approval required
- Informed consent process
- Data privacy and confidentiality
- Potential risks and benefits
- Right to withdraw

**8. Limitations:**
- Anticipated limitations of this design
- How to acknowledge in paper
- Future research to address limitations

**9. Timeline:**
| Phase | Duration | Details |
|-------|----------|---------|
| Pilot | {time} | Test instruments |
| Recruitment | {time} | {n} participants |
| Data Collection | {time} | {method} |
| Analysis | {time} | {analysis_type} |
| Writing | {time} | Draft and revise |

Provide: Complete methodology + justification + timeline.