The Experiment

The experiment is one of the types of scientific
research and
quantitative research.  It is important to
define an experiment. What is an experiment?   Below is
one possible experiment definition:
Definition of an Experiment

An experiment is one type of scientific research in
which researchers manipulate one or more variables to
see what effect they may have on one or more other

Independent and Dependent Variables

An experiment is a research method in which there will
be one or more independent variables and dependent
variables.  What is an independent variable?  In an
experiment, a variable manipulated by the researcher is
an independent variable.  A dependent variable is a
variable measured by the researcher.  A dependent
variable is a variable that is hypothesized to be
influenced by the independent variable.

Example of an Experiment  (Psychology Experiment

There are many possible examples of experiments.  
Some of these would be human behavior experiments or
psychology experiments.  In this article, I provide a
psychology experiment example.    Imagine that you
wished to know whether listening to music would
increase productivity in the workplace.  You randomly
assign each participant in this experiment to either an
experimental condition or a control condition. (1)
 In the experimental condition, participants listen to
music while they work.  In the control condition, the
participants do not listen to music while they work.
In this example, listening to music vs. not listening to
music is the independent variable.  The dependent
variable in this example is productivity.


1.  See the article, random assignment, for information
about random assignment
.   The randomized experiment
is an experiment in which participants are randomly
assigned to conditions.