Visual Inspection Example

Criticisms of Visual Inspection

When using visual inspection as the primary data analysis technique in single-subject research, what three key features of the graphed data do researchers primarily evaluate?

In single-subject research, data analysis relies on identifying specific patterns in behavior. Match each term related to visual inspection with the description of what it evaluates.

A researcher is analyzing the results of a single-subject study. Based on the principles of visual inspection, arrange the following hypothetical data patterns in order from the one that provides the STRONGEST evidence of a treatment effect (1) to the one that provides the WEAKEST evidence (3).

True or False: If a participant's behavior is already showing an improving trend during the baseline phase, visual inspection would suggest the treatment is effective even if the behavior continues to improve at that same rate during the treatment phase without any change in level or slope.

Imagine you are constructing a data set for a research manual to demonstrate an intervention that has a gradual, cumulative effect rather than an immediate breakthrough. To create a visual representation of a 'change in trend' that occurs without an immediate 'change in level' following a stable baseline phase ($A$) of [8, 8, 8, 8], which sequence of data points should you design for the treatment phase ($B$)?

Based on the definition of visual inspection as a data analysis technique, arrange the following steps in the correct order they are performed in single-subject research.

True or False: Visual inspection in single-subject research is a purely descriptive task of plotting data points on a graph, rather than an analytical technique used to judge the impact of an independent variable.

When evaluating the impact of an independent variable through visual inspection, if a researcher observes that a change in the dependent variable occurs only after a long delay following the introduction of the treatment, the researcher should judge the evidence for the treatment's effect as _____.

Match each hypothetical research scenario describing a participant's behavior change with the primary visual inspection dimension that is being highlighted.

A researcher is analyzing a single-subject graph tracking a participant's daily social anxiety rating. In the baseline phase ($A$), the ratings are stable at around $8$ out of $10$. On the first day the cognitive behavioral intervention is introduced ($B$), the anxiety rating immediately drops to $2$ and remains there. The researcher concludes that because the improvement coincided exactly with the start of the treatment, the change is highly likely to be caused by the intervention. In the context of visual inspection, this analytical judgment is based on the extremely short __________ between the onset of the independent variable and the change in the dependent variable.