Item Tracking Map
The Item Tracking Map shows how a respondent’s performance differs from what was expected given his or her performance on all the items he or she completed. The "Total Score on Variable" values are the same values as those displayed graphically on the Profile Map. To see these values, set the Display Scores option to Yes (see step 1 below).
- First select the respondent for whom you want to track items, then select Reports – Individual Reports - Item Tracking Map. You will be presented with a dialog window of display options, similar to that shown in Figure 1.
- Resize or change the shape of the map by dragging the corners of the map window, or the window edges. Some actions will crop the window, but dragging back will restore the window contents.
- Print the map by selecting File – Print from the menu. This will print the window in the form you see on the screen.
- Currently, this map cannot be saved. Close the display by selecting File - Close from the menu, or by clicking on the close box, , in the upper right-hand corner.
If you want to see a numeric proficiency estimate for the respondent, set Display Scores to Yes. If you want to generate a black and white map, rather than color, set Show in Gray Scale to Yes.
As shown in Figures 2 and 3, each item is represented as a column on this map. The Thurstonian thresholds are indicated for each item as horizontal bars between score values. The vertical shaded sections in each item show the score the student achieved.
This student achieved a score of 2 on the first DCI item and 3’s on the remaining four DCI items. She achieved scores of 2 on the two ET items.
The cyan-colored horizontal band across the graph shows the scores we expected this student to attain on each item. Figure 2 indicates that given the respondent's DCI profiency estimate on this item set, we would expect her to attain scores of 3 on each of the DCI items and Figure 3 indicates that we would expect scores of 2 on each of the ET items.
When the highest shaded section in a column intersects with this horizontal band a respondent is performing as expected. When the horizontal band is above the highest shaded section in the column, the respondent is not achieving as expected on that item. When the horizontal band crosses at a response level below the level the respondent achieved, then the respondent is achieving higher item scores than expected. In Figure 2 we note that this respondent did not perform as expected on the first item
Unexpectedly higher or lower scores can be investigated further to help teachers and students understand the nature of a student’s strengths and weaknesses in learning on this variable.