2. Qualitative Design
Experimental Non- Experimental
True
Experimental
Quasi-
Experimental
Pre Experimental
Descriptive

3. Experimental
Research Design
 It allows the researcher to
control the situation.
 QUESTION: What causes
something to occur?
 It allows to identify cause and
effects relationships

4. Pre- experimental
This type of research apply
to experimental designs
with the least internal
validity.
One type of pre- experiment:
the single group, pre- test-
post-test design, measures
the group two times, before
and after the intervention.

5. Quasi- experimental
The researcher can collect
more data, either by
scheduling more
observations or finding
more existing measures.
It differs from true
experimental design by the
absence of random
assignments of subjects to
different conditions.

6. True experimental
Controls for both time-
related and group- related
threats
FEATURES: two or more
differently treated groups
and random assignment to
these groups

7. True experimental
A control group reflects
changes other than those
due to the treatment that
occur during the time of the
study.
Changes include effects of
outside events, maturation,
changes in measure, and
impact of any pre- test

8. True experimental
A control group reflects
changes other than those
due to the treatment that
occur during the time of the
study.
Changes include effects of
outside events, maturation,
changes in measure, and
impact of any pre- test

9. Non- experimental
Research Design
The researcher observes
the phenomena as they
occur naturally and no
external variables are
introduced.
Variables are not
manipulated

10. Non- experimental
Research Design
Its main purpose is to
OBSERVE, DESCRIBE and
DOCUMENT aspects of a
situation as it naturally
occurs.

11. Types of Descriptive
Research Design
SURVEY
It is used when the researcher intends to
provide a quantitative or numeric description
of trends, attitudes or opinions of a population.

12. Types of Descriptive
Research Design
CORRELATIONAL

13. Types of Descriptive
Research Design
EX- POST FACTO
RESEARCH DESIGN
• It is used to investigate causal relationships.
• Researchers attempt to discover whether
differences between groups have results in
an observed difference in the independent
variables.

14. Types of Descriptive
Research Design
Comparative
• Involves comparing and contrasting
two or more samples of study subjects
on one or more variables, often at a
single point of time.

15. Types of Descriptive
Research Design
Evaluative Research
• It seeks to assess or judge in some way
providing information about
something.