An overview of Single-subject experimental research. written for class presentation of Educational Research Methodology class.

1. MUSFERA NARA VADIA & FITHROTUL KHOIRIYAH
SINGLE -SUBJECT EXPERIMENTAL RESEARCH

2. REVIEW
EXPERIMENTAL
RESEARCH
EXPERIMENTAL
DESIGN
Pre-experimental True-experimental
Quasi-
experimental
Factorial design
SINGLE-
SUBJECT
EXPERIMENTAL
DESIGN
A-B-A and A-B-A-
B design
Multiple-baseline
Changing criterion
Design
1. One-shot Case Study
2. One-group pretest-
posttest design
3. The static-group
comparison
1. The pretest-posttest
control group design
2. The posttest-only
control group design
3. The Solomon four-
group design
1. The nonequivalent
control group design
2. The time-series
design
3. Counterbalanced
design

3. SINGLE-SUBJECT EXPERIMENTAL
DESIGNS
• It is a design that can be applied when the sample size is one,
or when a number of individuals are considered as one group.
(Gay, et.al, 2009, p.280)
• Typically used to study behavior change as a result of some
treatments.
• The participant is exposed to a non-treatment (baseline
phase) and treatment (treatment phase), and performance is
measured during each phase.
• Non-treatment or baseline phase is symbolized as A, and
treatment phase is symbolized as B.

4. D
D
INTERNAL & EXTERNAL
VALIDITY

5. • Low external validity
• The key of generalizability is
replication
• The more diverse replication are, the
more generalizable the result.
External Validity

6. Internal Validity
• Baseline measures
• Valid and reliable
instrumentation
Repeated & Reliable
Measurements
• To provide a description of
the target behavior as it
naturally occurs before the
treatment is applied
Baseline Stability
Only one variable can
be manipulated at a
time.
The Single-variable
Rule

7. TYPES OF DESIGNS
A
B
C
A-B-A and A-B-A-B Designs
Multiple – baseline Designs
Changing-Criterion Designs

8. 1. A-B-A Designs
A single-case experimental design in which the response to the
experimental treatment condition is compared to the baseline
responses taken before and after administering the treatment
condition.
2. A-B-A-B Designs
An A-B-A design that is extended to include the reintroduction of the
treatment condition.
A-B-A and A-B-A-B Designs

10. • A single-case experimental design in which the treatment
condition is successively administered to different
participants or to the same participant in several setting
after baseline behaviors have been recorded for the
different periods of time.
Multiple-Baseline Design

12. Changing-Criterion Design
• Also known as Alternating Treatments design.
• A single-case experimental design in which a participant’s
behavior is gradually altered by changing the criterion for
success over successive treatment periods.

14. REFERENCES
Gay, L.R., Mills, Geoffrey E., & Airasian, Peter. (2009). Educatio
nal research: competences for analysis and application (9th ed.).
Ohio: Pearson.
Johnson, Burke & Christensen, Larry. (2012). Educational resear
ch: quantitative, qualitative, and mixed approaches (3rd ed.). Cali
fornia: Sage Publication.
Lodico, M.G., et al. (2010). Methods in educational research: fro
m theory to practice. San Fransisco: Jossey Bass

15. D
D
Thank you