Skip to main content
Figure 2 | BMC Research Notes

Figure 2

From: Changes in character strengths after watching movies: when to use rasch analysis

Figure 2

Scatterplot of item difficulty estimates from racked analysis. The line (y = x) indicating no change in item difficulty estimates has been drawn to depict change in item difficulty estimates over time. Items above the line represent items estimated as more difficult by the postintervention assessment while items below the line represent items estimated as less difficult by the postintervention assessment. The centered line is the identity line added for reference. The parallel-identity lines are approximate 95% two-sided confidence bands. Item G1 was higher at Time 2 than at Time 1 (t (78)  = − 1.77, p = 0.080), whereas Item S15 was lower (t (78)  = 1.27, p = 0.207).

Back to article page