Simulation and field studies are used
to increase the external validity of experiments
. Simulation involves bringing aspects of the real world into the laboratory.
Which elements are characteristics of true experiments check all that apply?
Several kinds of experimental designs exist. In general, designs that are true experiments contain three key features:
independent and dependent variables, pretesting and posttesting, and experimental and control groups
. In a true experiment, the effect of an intervention is tested by comparing two groups.
What is the advantage of a field study of a laboratory study?
Field Experiment
Strength
: behavior in a field experiment is more likely to reflect real life because of its natural setting, i.e. higher ecological validity than a lab experiment. Strength: There is less likelihood of demand characteristics affecting the results, as participants may not know they are being studied.
When a researcher manipulates a variable to create the treatment conditions in an experiment is called?
A researcher manipulates one or more variables to create the treatment condition(s). The variable the experimenter uses to create the treatment condition(s) is called the
_____variable
.
What is the purpose for using a control group in an experiment quizlet?
A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results. This isolates the independent variable’s effects on the experiment and
can help rule out alternative explanations of the experimental results
.
What is the general purpose for using simulations and field studies?
Simulation and field studies are used
to increase the external validity of experiments
. Simulation involves bringing aspects of the real world into the laboratory.
What is the difference between a lab study and a field study?
Field research is a research conducted in the real world or a natural setting. … Laboratory research is often described as
tightly controlled investigation
in which the researcher manipulates the particular factor under study to determine if such manipulation generates a change in the subjects [5].
What are the 5 components of experimental design?
The five components of the scientific method are:
observations, questions, hypothesis, methods and results
.
What are the three rules of causation?
There are three conditions for causality:
covariation, temporal precedence, and control for “third variables
.” The latter comprise alternative explanations for the observed causal relationship.
What is an example of a true experiment?
A type of experimental design where the researcher randomly assigns test units and treatments to the experimental groups. Examples of true experimental designs are:
pre-test – post-test control group, post-test only control group, and a Solomon four group, six-study design.
What is the responding variable in an experiment?
A responding variable is something that “responds” to changes you make in an experiment. It’s the effect or outcome in an experiment. … The variable you change would be the amount of light. The responding variable would be
the height of the plants
.
How do you manipulate variables?
More specifically, in an experiment, a variable can cause something to change, be the result of something that changed, or be controlled so it has no effect on anything. Variables that cause something to change are called independent variables or manipulated variables.
What are the two necessary elements for a research study to be an experiment?
While there are several important considerations that go into creating a good experiment, the essential parts are
the treatment and the control
. The experimental treatment is the thing that you are testing.
What is the primary reason to include a control group in an experiment quizlet?
What is the primary reason to include a control group in an experiment?
The control group allows you to make comparisons to the experimental group.
What is the purpose of the control group?
The control group consists of elements that present exactly the same characteristics of the experimental group, except for the variable applied to the latter. This group of scientific control
enables the experimental study of one variable at a time
, and it is an essential part of the scientific method.
What is the primary purpose of a control group?
What is a Control Group? The control group (sometimes called a comparison group) is used in an experiment as
a way to ensure that your experiment actually works
. It’s a way to make sure that the treatment you are giving is causing the experimental results, and not something outside the experiment.
