How do I show how scores changed between iterations in my report?

If your assessment uses iterations, you can show how a respondent's (or cohort's) scores have changed across iterations in two ways: by filtering a specific merge string to one iteration, or by splitting a chart to show all iterations side by side.

Filter a merge string to a specific iteration

Add the Iteration parameter to any merge string to pull data from one specific iteration:

Example merge strings:

• {RatingScore.Score[Survey Iteration=Last]} - overall percentage score for the most recent iteration.
• {RatingScore.Score[Survey Iteration=First]} - overall percentage score for the very first iteration.
• {Name[SectionNo=ALL Top=1 Iteration=Last]} - name of the highest-scoring section in the most recent iteration.

To configure via the Merge Manager: in the Options panel, choose Filter by Iteration, then select First, Last, or Previous.

Split a chart to show all iterations side by side

To compare iterations visually, use a multi-series chart (BarMulti, SpiderMulti, LineMulti, PolarMulti) with the Group by Iteration cohort split.

The parameter is SplitType=T. Each iteration becomes its own data series on the chart.

Example merge strings:

• {SpiderMulti[SectionNo=ALL SplitType=T]} - spider chart with one line per iteration, comparing section scores over time.
• {BarMulti[SectionNo=ALL SplitType=T]} - bar chart grouped by iteration.
• {LineMulti[SectionNo=ALL SplitType=T]} - line chart, often the clearest way to show trends across many iterations.

To configure via the Merge Manager: choose your multi-series chart type, then in Options select Set the Cohort Splits > Group by Iteration.

Show the difference between iterations

To compute the change in score between two iterations directly (rather than showing both side by side), use the difference metric on a score merge string:

• {RatingScore.Score[SectionNo=ALL Metric=DiffIterationPC Base-Iteration=First]} - percentage-point change in each section's score, comparing the current iteration to the first.
• {RatingScore.Score[Survey Metric=DiffIterationPC Base-Iteration=Previous]} - change in overall score from the previous iteration to the current.

Use this when the report should highlight movement (e.g., a delta column or a delta callout) rather than showing the raw scores from each iteration.

For full details on iteration setup and reporting, see Setting Up Assessment Iterations and Building Cohort Feedback Report.