Research

1. Experimental
Design
Experimental design is the process of
researching in an objective and
controlled manner to optimize precision
and reach particular conclusions about a
hypothesis statement. The goal is to
determine the effect a factor or
independent variable has on a
dependent variable.

3. 1. PRE-EXPERIMENTAL STUDY DESIGN
•Pre-experimental design are research schemes in which a
subject or a group is observed after a treatment has been
applied, in order to test whether the treatment has the
potential to cause change.

4. PRE-EXPERIMENTAL RESEARCH CAN BE DIVIDED INTO
THREE CATEGORIES:
 Case Study Research Design in a Single
Session:
• Only one dependent group or variable is investigated in this
experimental study. It’s post-test research since it’s done after
some treatment that’s supposed to induce change.
 One-group Pre- and post-testing was used in
the research:
• By administering a test to a single group before and
after treatment, this research design incorporates post-
test and pretest studies. The former is given at the start
of treatment, while the latter is given at the end.

5. Comparison of static groups:
In a static-group comparison study, two or more groups are observed, with
only one of the groups receiving treatment while the other groups remain
unchanged. All groups are retested after the therapy, and the observed
differences between them are presumed to be due to the treatment.
•2. True Experimental research design:
• True experimental research is the maximum accurate type of study because
it depends on biostatistical analysis to prove or reject a concept. Only a
simple design, out of all the types of experimental design, can demonstrate a
cause-and-effect link inside a group. In an actual experiment, three
conditions must be met:

6. • Control Group that will not be affected by the modifications, and an
Experimental Group that will be exposed to the altered variables.
The researcher has control over that a variable.
The distribution is random.
3. Quasi-experimental Research Design:
“Quasi” indicates “partial,” “half,” or “false.” As a result,
while quasi-experimental research resembles actual
experimental studies, it is not the same. Participants in quasi-
experiments are not assigned at random, and as a result, they
are employed in situations where randomization is
problematic or impossible.

7. 4. Factorial design
-factorial design is a type of research methodology that allows for
the investigation of the main and interaction effects between two
or more independent variables and on one or more outcome
variables.
• THREE TYPES OF FACTORIAL DESIGNS;
1. Within Subject Factorial Design: In this factorial design,
all of the independent variables are manipulated within
subjects.
2. Between Subject Factorial Design: In the between
subject factorial design, the subjects are assigned to
different conditions on each subject only experiences
one of the experimental conditions.

8. 3. Mixed Factorial Design: This design is most commonly used in the study of
psychology. It is named the ‘Mixed factorial design’because it has atleast one
within subject variable and one between subject variable.
•What Is the Purpose of Experimental Research
Design?
•The experimental study design benefits physical
disciplines, social sciences, education, and psychology.
It’s utilized to make predictions and come to
conclusions about a topic

9. SHUKRAN/THANKYOU !!!
Prepared and Reported by:
NORHANA M.KAMIM