Rasch analysis run on stacked data from the two time points. The person (student) measures at Time 2 are plotted against those at Time 1. Greater measures indicate more positive strength students. Each dot represents one person. Circled dots indicate statistically significant change at time 2 from time 1. The centered line is the identity line added for reference. The parallel-identity lines are approximate 95% two-sided confidence bands. One person (above the lines) scored significantly higher at Time 2 than at Time 1 (t (78) = − 4.45, p < 0.0001), whereas the other person (below the lines) significantly scored lower (t (78) = 2.76, p = 0.007).