There are three main types of case studies: intrinsic, instrumental, and multiple case studies. Intrinsic case studies focus on understanding a specific individual or situation. Instrumental case studies examine a particular case to gain insight into an issue or refine a theory. Multiple case studies study multiple cases as part of an overall study to make conclusions more compelling and valid. Qualitative research techniques include ethnographic research to understand how people live and historical research to study the past. There are various sampling methods for qualitative research such as typical, critical, homogeneous, theoretical, snowball, opportunistic, confirming, and maximal variation samples.

1. CASE
STUDY
Object as Cases
Submitted to:
Prof. Agnes Montalbo
Rizal Technological University

2. What are the common cases?
Case is not just a study focuses on a
particular individual or situation
that can easily be identified

3. Three types of case study
• Intrinsic Case Study
• Instrumental Case Study
• Multiple Case Study

4. Intrinsic Case Study
Researcher
primarily
interested in
understanding
Specific
individual
or situation

5. Instrumental Case Study
• Researcher
is interested
more than a
particular
matter,
• They study
particular case
• as an
instrument
for their larger
goal of study

6. The goal is more
on global

7. Multiple Case Study
• Study
multiple
cases
• as part
of an
over all
study
Multiple case study is
more compelling and
more likely land to valid
generalization

8. Ethnographic
and Historical Research
Aim is to gather insights
on how people live,
what they do,
how they use things,
or what they need in
their everyday living

9. Techniques

10. Concentrate on the past
Historical Research

11. Sampling in qualitative research
Typical Sample
Critical Sample
Homogeneous Sample
Theoretical Sample
Snowball Sample
Opportunistic Sample
Confirming Sample
Maximal Variation Sample

12. Typical Sample
Representative Samples

13. Critical Sample
Enlightening Samples

14. Homogeneous Sample
Samples have the same traits and
characteristics

15. Theoretical Sample
Help researcher understand theory

16. Snowball Sample
Chain Sample

17. Opportunistic Sample
Use to take advantage of new
conditions

18. Confirming Sample
Purpose is to validate or disconfirm
preliminary findings

19. Maximal Variation
Sample
Represent diversity of perspective or
characteristics

20. THANK YOU FOR WATCHING
