IV & DV Experimental psychology

What is an independent variable (IV)?

• A variable that cannot be manipulated

• A variable that remains constant throughout the experiment

• A variable that can be controlled or changed by the experimenter

• A variable that is measured in an experiment

What does a dependent variable (DV) represent?

• The variable that is manipulated

• The variable that is measured to assess the effect of the IV

• The variable that is not relevant to the experiment

• The variable that remains unchanged

Which of the following is an example of a categorical variable?

• Gender

• Weight

• Height

• Temperature

What is a confounding variable?

• A variable that is irrelevant to the study

• An extraneous variable that affects the DV

• A variable that is manipulated by the experimenter

• A variable that is controlled in an experiment

What is the purpose of controlling extraneous variables?

• To ensure the IV is manipulated

• To eliminate any influence on the DV

• To increase the number of participants

• To simplify the experiment

Which of the following is NOT a type of extraneous variable?

• Participant variable

• Situational variable

• Dependent variable

• Demand characteristic

What does 'maturation' refer to in the context of threats to internal validity?

• Changes in the DV due to aging or experience

• Changes in the IV due to external factors

• Changes in participant selection

• Changes in measurement techniques

What is the main focus of a psychological experiment?

• To manipulate participant behavior

• To ensure random sampling

• To observe phenomena in a controlled environment

• To gather qualitative data

Which of the following is an example of a continuous variable?

• Height

• Religion

• Gender

• Race

What is the role of the experimenter in a psychological experiment?

• To eliminate the need for control

• To create random variables

• To influence participant responses

• To observe and record behavior