EXPERIMENTAL RESEARCH

Reviewing the previous lessons
The research method includes:
- Theory
- The literature review
- The basic concept of research
- Collect data
- Analysis data (qualitative and quantitative)
- Writing
The difference between hypothesis and assumption:
- Hypothesis: A proposition provisionally adopted to explain certain facts, and to guide in the investigation of others.
- Assumption: a supposition which researcher offer in their study to make clear their point
EXPERIMENTAL RESEARCH
The basic cognition of experiment:
There are three things research should do in experiments: begin with a hypothesis, modify something in situation, and compare outcomes with and without the modification.
The important concepts:
- Treatment (or independent variable) is what the researcher modifies.
- Dependent variable is the physical conditions, social behaviors, attitudes, feelings or beliefs of subjects that change in response to a treatment.
- Pretest is the measurement of the dependent variable after the treatment has been introduced into the experimental situation.
- Posttest experimental group is the group that receives the treatment or in which the treatment is present.
- Control group is the group that does not receives the treatment.
- Random assignment is a method for assigning cases to groups for the purpose of making comparisons.
Types of experimental design: the comparison of the classical experimental design with major design.