Experimental Design McMaster reading (Quiz only)

During a psychology class, Ava and Daniel were discussing the primary method used to systematically study a problem in psychology. What method were they talking about?

• Observation

• Experiment

• Survey

• Case Study

In a classroom experiment, what does the teacher manipulate?

• The environment

• The students

• One or more variables

• The outcome

Mira and Addison are conducting an experiment to determine the effect of a new teaching method on student performance. What allows them to detect cause and effect relationships in their experiment?

• Random sampling

• Careful observation and control of variables

• Large sample sizes

• Longitudinal studies

In a classroom experiment, Thomas and Mia are recording the outcomes of a coin toss. What is a variable that can take on only two possible values called?

• Continuous variable

• Independent variable

• Dependent variable

• Binary variable

During a science experiment, which of the following measurements can take on an infinite range of values?

• Gender

• Alive/Dead

• Weight

• On/Off

In a study where Avery is testing the effect of different study techniques on test scores, which type of variable is explicitly manipulated by Avery?

• Dependent Variable (DV)

• Confounding Variable (CV)

• Independent Variable (IV)

• Extraneous Variable (EV)

In an experiment conducted by Amelia, what is the role of the dependent variable (DV)?

• It is the variable that the researcher explicitly manipulates.

• It is the variable that is measured to see if it is affected by the independent variable.

• It is a variable that the researcher does not manipulate or measure.

• It is a variable that remains constant throughout the experiment.

In a study where Olivia is observing the growth of plants, what term is used to describe variables that Olivia does not manipulate or measure but that could still affect the outcome of the experiment?

• Independent Variables (IVs)

• Dependent Variables (DVs)

• Extraneous Variables (EVs)

• Constants

Emily is conducting an experiment to test the effectiveness of a new teaching method. What is the primary method she should use to minimize the potential influence of extraneous variables (EVs) on the data?

• Manipulation

• Randomization

• Control

• Elimination

In the example of Noah and Amelia's room temperature experiment, what was the independent variable (IV)?

• Test scores of students

• Room temperature

• Time of day

• Gender of students