- Methods triangulation
- Most common
- Using different data collection methods
- Data triangulation
- Using different data sources
- Investigator triangulation
- Source: Adapted from Yin, 2003. Pg. 100
EXERCISE Case study Critiques PREPARING FOR THE CASE STUDY Increasing Reliability - Reliability: if the study was repeated the same results
- Increase: use case study protocols
- TRAIN & TRAIN!
- Help develop case study data bases
Selecting Data Collectors - Field Investigators and Skills Needed
- Asking questions
- Listening
- Flexibility
- Understanding of issues being studied
- Objectivity
Training Example of Training Seminar - Purpose and Background of the Evaluation
- The Case Study Protocol
- Interviewing, Observation & Coding Practice
- Field Assignments
- Tasks
- A. Orientation
- B. Case study sites, field appointments and travel arrangements
- C. Writing the case study and draft reviews
- D. Case study records
- Contains the procedures and general rules to be followed.
- Increases the reliability of the evaluation.
- Anticipates problems that might arise and identifies solutions or strategies.
Case Study Protocol “Must Haves” - 2 Page Overview
- Study background
- Study purpose and objectives
- Study scope and methodology
- Case study issues, relevant readings
- 1 Page Letter of Introduction
- Sponsoring org., official, title and contact detail
- Study title
- Data collector name, org., and assignment
The Case Study Protocol - The Design Matrix
- Field procedures
- Credentials and access to the case study sites; resources needed
- How to get help, if needed
- Schedule
- Procedures
- Sampling or selection criteria, if applicable
The Case Study Protocol - Case study guides, e.g.
- Interview guides
- Observation guides
- Questionnaires
- Checklist of documents to be collected
- List of pictures to be taken
- DCI for information from records
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