Quiz: Research Methods in Psychology — 9 questions

1. What distinguishes a quasi-experiment from a true experiment?

A. Compares existing groups without randomization

B. Manipulates variables in a controlled setting

C. Uses random assignment to groups

D. Involves in-depth analysis of a single case

Answer: (A)

Explanation

A Quasi-Experiment compares existing groups without random assignment, limiting causal inference but useful when randomization isn't feasible. Unlike true experiments, they do not manipulate variables in a controlled setting.

2. What is the primary characteristic that distinguishes a field experiment from a lab experiment?

A. Field experiments are conducted in natural environments, enhancing ecological validity.

B. Field experiments lack control over variables, making them less reliable.

C. Lab experiments are conducted outside of controlled settings to observe natural behavior.

D. Lab experiments focus only on qualitative data collection.

Answer: (A)

Explanation

Field experiments occur in real-world settings, which increases ecological validity, unlike lab experiments that are conducted in controlled environments.

3. Which type of experiment is conducted in a natural environment, emphasizing ecological validity?

A. Quasi-Experiment

B. Correlational Study

C. Field Experiment

D. Lab Experiment

Answer: (C)

Explanation

A Field Experiment is conducted in a natural environment, which enhances ecological validity by observing behaviors in real-world settings, unlike lab experiments that occur in controlled environments.

4. Who is known for developing the concept of the experimental method in psychology during the early 20th century?

A. John B. Watson

B. Wilhelm Wundt

C. Sir Francis Galton

D. William Wundt

Explanation

Wilhelm Wundt is considered one of the founding figures of experimental psychology, pioneering experimental methods in the late 19th century. (Note: The names are similar, but Wilhelm Wundt is the correct answer.)

5. Which sampling method involves selecting every nth individual from a population?

A. Stratified Sampling

B. Random Sampling

C. Systematic Sampling

D. Opportunity Sampling

Answer: (C)

Explanation

Systematic Sampling involves selecting every nth individual from a list or sequence, providing a simple and systematic approach to sampling.

6. Which sampling method involves selecting participants who are easiest to access or recruit?

A. Opportunity sampling

B. Random sampling

C. Stratified sampling

D. Systematic sampling

Answer: (A)

Explanation

Opportunity sampling involves selecting participants that are easiest to access, often used for convenience. This differs from random sampling, which gives everyone an equal chance.

7. What type of study collects data at a single point in time from different individuals?

A. Cross-sectional study

B. Longitudinal study

C. Case study

D. Experimental study

Answer: (A)

Explanation

A cross-sectional study collects data at one time point from different individuals, allowing for comparisons across groups, unlike longitudinal studies which track the same individuals over time.

8. Which type of research design provides in-depth, contextual insights by analyzing a single entity over a period of time?

A. Case study

B. Survey research

C. Correlational study

D. Cross-sectional study

Answer: (A)

Explanation

Case studies involve in-depth analysis of a single entity and can be longitudinal, providing rich contextual insights, unlike surveys or cross-sectional designs.

9. What does a correlation coefficient indicate in psychological research?

A. The strength and direction of the relationship between two variables

B. Causality between two variables

C. The mean difference between groups

D. The cause-and-effect sequence of events

Answer: (A)

Explanation

A correlation coefficient measures the strength and direction of the relationship between two variables but does not establish causality.