Conditions for Non-Experimental Research

Correlational Research

Longitudinal Research

Cross-Sectional Research

Example of Non-Experimental Research: Traffic Fatalities

Example of Non-Experimental Research: Intersection Observation

Complementary Use of Experimental and Non-Experimental Research

Observational Research

Quasi-Experimental Research

Comparison of Internal Validity Across Research Designs

Applications of Surveys

What is the defining characteristic of non-experimental research?

A study that measures the naturally occurring levels of social media use and self-esteem in a group of high school students to see how they are related is an example of non-experimental research.

Match the core characteristics of non-experimental research with the descriptions that best explain their role in a psychological study.

A researcher conducts a study on the relationship between students' natural sleep patterns and their academic performance by tracking them for a semester. Arrange the following steps in the logical order required to analyze this methodology and determine its scientific boundaries.

A researcher is tasked with designing a study to investigate how the frequency of naturally occurring social interactions in the workplace relates to the overall job satisfaction of employees. Since the researcher cannot ethically or practically assign employees to have more or fewer friends at work, which of the following research plans best constructs a valid non-experimental design for this investigation?

A psychologist is evaluating the most ethical way to study how surviving a natural disaster affects long-term personality. Because the researcher cannot ethically expose participants to such trauma, they must conclude that the most appropriate methodology is _____, even though this design cannot provide definitive evidence that the disaster caused the personality changes.

Non-experimental research methodologies are characterized by the lack of _____ of an independent variable.

Imagine you are a psychology researcher interested in studying the relationship between early childhood illness experiences and the development of hypochondriasis in adulthood. Explain how you would design this study using a non-experimental approach and explain why an experimental approach cannot be used in this situation.

Based on the principles of non-experimental research, analyze Dr. Smith's conclusion. What specific type of non-experimental research did she conduct, what defines it as non-experimental, and why is her press conference statement problematic?

A fellow psychology student argues that because non-experimental research cannot provide strong evidence that changes in an independent variable cause differences in a dependent variable, it is nonscientific and less important than experimental research. Evaluate this claim based on the goals of science and the practical constraints of psychological research.

Which of the following best explains why researchers generally cannot draw causal conclusions from non-experimental research?

A psychology student is reviewing different research proposals. Apply your understanding of experimental versus non-experimental research to match each proposed research question with the correct methodology and rationale.

A psychologist tightly controls the temperature, lighting, and noise levels of a laboratory while observing the natural association between adults' baseline stress levels and their memory recall. Because the researcher successfully controlled these environmental factors, this methodology is classified as an experimental design rather than non-experimental research.