Chapter 7: Experimental research

What is definition that more closely relates to Experimental research strategy?

• Establish the existence of a cause-and-effect relationship between two variables.

• Establish the existence of a cause-and-effect relationship between two experiments

• Establish the laws of nature through a clear definition and experimental procedure

• Provides evidence for a research question

What elements most be present to accomplish the goal of an experimental study?

The following definition is associated with what key concept?

The researcher changes the value of a variable to create a set of two or more treatment conditions

• Control

• Manipulation

• Comparison

• Measurement

The following definition is associated with what key concept?

A second variable is measured for a group of participants to obtain a set of scores in each treatment condition

• Measurement

• Control

• Manipulation

• Comparison

The following definition is associated with what key concept?

Consistent differences between treatments provide evidence that the manipulation has caused changes in the scores.

• Measurement

• Control

• Manipulation

• Comparison

The following definition is associated with what key concept?

Other variables outside of the research plan are handled to limit their influence on results.

• Manipulation

• Control

• Comparison

• Measurement

True or false.

Any type of research beyond the 4 concepts of control, manipulation, measurement and comparison are real experiments.

• True

• False

An experiment involve manipulating _______ variable and Measuring ________ variable.

• One, third

• Two, second

• One, Second

• Two, One

Which statement(s) are part of the definition of an experiment?

• Manipulating one variable, measuring a second variable

• Comparing the scores between treatments

• Controlling all other variables

• All of the above

What does manipulating a variable does?