Quiz: Fundamentals of Psychological Research Methods — 9 questions

1. What is a research variable?

A. A property that can be measured or manipulated in a study

B. A tool used to collect data from participants

C. A fixed characteristic that never changes in research

D. A statistical test used to analyze data

Answer: (A)

Explanation

A research variable is a property that can be measured or manipulated in a study, which is essential for conducting experiments and observing effects.

2. Who are the authors associated with foundational work on experimental research design in psychology?

A. J. Maxwell and Clark

B. C. B. Reilly and E. G. McMillan

C. F. Mosteller and J. W. Tukey

D. J. W. Krathwohl and D. R. Anderson

Answer: (D)

Explanation

John W. Krathwohl and David R. Anderson are notable authors linked to research methodology in psychology, particularly experimental design fundamentals. The other options list authors who are not primarily associated with this specific topic.

3. Who are the authors associated with foundational work on experimental research design in psychology?

A. Skinner & Pavlov

B. Campbell & Stanley

C. Miller & Dollard

D. Piaget & Vygotsky

Answer: (B)

Explanation

Campbell & Stanley are well-known for their influential work on experimental design and control in research methodology, making them the correct answer. The other options are notable psychologists or researchers but are not specifically associated with foundational work on experimental research design.

4. What is the primary purpose of an independent variable in an experiment?

A. To measure the effect of the experiment's outcome

B. To control extraneous variables

C. To manipulate or vary for observing its effect on the DV

D. To serve as a confounding factor

Answer: (C)

Explanation

The independent variable is deliberately manipulated to observe its potential effect on the dependent variable, which distinguishes it from other variables. The other options describe different roles or misconceptions.

5. Which type of variable is defined as the property that is measured in an experiment, depending on the independent variable?

A. Control variable

B. Dependent variable

C. Extraneous variable

D. Confounding variable

Answer: (B)

Explanation

The dependent variable is measured to assess the effect of the independent variable. Control and extraneous variables are managed or controlled to prevent bias, and confounding variables are uncontrolled extraneous factors.

6. What is the main difference between an extraneous variable and a confounding variable?

A. Extraneous variables are not controlled; confounding variables are controlled.

B. Extraneous variables can threaten internal validity; confounding variables impact validity if not controlled.

C. Extraneous variables are kept constant; confounding variables are manipulated.

D. Extraneous variables are additional factors that could influence the DV; confounding variables specifically affect the DV and are not controlled.

Answer: (D)

Explanation

Extraneous variables are other factors that can influence the DV and need control, while confounding variables specifically distort the results because they affect the DV and remain uncontrolled.

7. What is the process of defining variables in measurable terms called?

A. Operationalisation

B. Manipulation

C. Standardization

D. Variable encoding

Answer: (A)

Explanation

Operationalisation involves defining how variables are measured or manipulated in a study, which is crucial for clarity, replication, and validity.

8. Which of the following best describes the purpose of control variables?

A. To eliminate the effect of unrelated variables on the DV

B. To introduce variability into the experiment

C. To measure the effect of the IV on the DV

D. To confound the results intentionally

Answer: (A)

Explanation

Control variables are intentionally kept constant to prevent them from influencing the outcome, ensuring that any observed effect is due to the IV.

9. In the context of research variables, why is proper operationalisation crucial?

A. It allows experimental results to be generalized across different populations.

B. It ensures clear, measurable definitions of variables, enhancing replicability and validity.

C. It minimizes the need for control variables.

D. It replaces the need to manipulate the independent variable.

Answer: (B)

Explanation

Proper operationalisation ensures that variables are clearly and accurately defined in measurable terms, which is essential for consistent replication and validity of the research.