Figure 6
The histogram titled “Person-Item Threshold Distribution” includes the subtitle “Grouping Set to Interval Length of 0.20 making 100 Groups”. The horizontal axis is labeled “Location (logits)” and ranges from negative 10 to 10 with increments of 1 unit. The upper panel is labeled “PERSONS”. The left vertical axis is labeled “Frequency” and ranges from 0 to 25 with increments of 5 units. The right vertical axis shows percentages from 0.0 percent to 10.4 percent, with marked values at 2.1 percent, 4.2 percent, 6.3 percent, 8.3 percent, and 10.4 percent. A histogram of persons is concentrated between negative 4 and 2 logits, with the tallest bar near 4 logits reaching about 25. Most bars between negative 3 and 1 range between 5 and 18. A green smooth curve overlays the histogram, peaking near negative 4 at about 25 and rising again near 8 to 9 logits at about 14. Under “INFORMATION”, the value “5.18” appears. Summary statistics read “No. Mean SD” and “Total [240] negative 0.198, 1.975”. Dashed horizontal reference lines are labeled 1.04, 2.07, 3.11, 4.15, and 5.18. The lower panel is labeled “ITEMS”. The left vertical axis is labeled “Frequency” and ranges from 0 to 10 with increments of 5 units. The right vertical axis shows percentages from 0.0 percent to 20.8 percent, with marked values at 10.4 percent and 20.8 percent. Downward bars represent item thresholds clustered mainly between negative 4 and 2 logits, with most bars reaching frequencies between 2 and 7. A separate cluster appears between 8 and 9 logits, with bars reaching about 6. Blue dashed horizontal reference lines appear at frequency levels 5 and 10. Note: All numerical data values are approximated.MEL-self person-item threshold distribution map. Source: Authors’ own work