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An example of visual inspection involves evaluating data from a single-subject study to determine treatment effectiveness based on level, trend, and latency. If a graph shows a high, increasing trend in the baseline condition that quickly changes to a lower, decreasing trend in the treatment condition, and then returns to a high level when baseline is reinstated, visual inspection strongly suggests the treatment is effective. Conversely, small changes in level and continuous trends across conditions suggest an ineffective treatment.

Visual Inspection Example

When visually evaluating data from a single-subject study, which of the following graphical patterns would strongly suggest that a treatment is effective?

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