Example of Single-Variable Research: First Impressions

Which type of research design is required when a study is focused entirely on observing and describing a single variable without attempting to manipulate it?

A psychologist who wants to measure and describe the average number of hours per week that first-year university students spend on social media is studying a single variable. Because no relationship between two variables is being examined, a non-experimental research design is the appropriate choice for this study.

A researcher simplifies a study from 'comparing test scores between different majors' to only 'reporting the mean test score of all participants ($M = 82$).' The study is now classified as single-variable research because it focuses on the measurement of a ______ rather than an analysis of a statistical relationship.

A researcher proposes a study to calculate the 'mean score on a memory test' ($M$) for a group of adults and labels it an experiment. Arrange the steps you would take to evaluate this proposal and justify its classification as single-variable research.

Single-variable research is characterized by the measurement of one variable in isolation rather than the analysis of a statistical relationship between two or more variables.

Which of the following research goals best illustrates the primary indication for using a single-variable research design?

Match each psychology research scenario to the appropriate research design it exemplifies.

A researcher wants to study how accurate people's first impressions are. Because the study's research question is focused entirely on measuring a single characteristic without analyzing relationships or manipulating variables, the researcher must use a _____ design.

A student proposes a study to measure public speaking anxiety in a sample of college students. To determine whether this proposed study should be classified as single-variable research, order the steps you would take to evaluate the proposal, starting with the initial identification of the focus.