Table 1
Mean diagnostic accuracy (initial and final diagnosis), final confidence, and final calibration as a function of experimental condition (reflection group vs control group); standard deviation into brackets
|
Outcome |
Group |
Statistics | |
|---|---|---|---|
|
Control (n = 28) |
Reflection (n = 33) | ||
|
Accuracy (%) | |||
|
Initial |
40.48 (13.36) |
45.96 (12.35) |
t(59) = 1.66; p = 0.10; d = 0.42 |
|
Final |
38.4 (14.6) |
49.7 (12.1) |
t(59) = 3.33; p = 0.002; d = 0.84 |
|
Confidence (%) |
58.87 (20.10) |
64.29 (13.20) |
t(59) = 1.26; p = 0.21; d = 0.31 |
|
Calibration (−1 a + 1) |
0.20 ± 0.19 |
0.15 ± 0.16 |
t(59) = 1.32; p = 0.19; d = 0.28 |
Table 2
Relationship between experimental condition and accuracy, confidence, and calibration as a function of case difficulty
|
Difficulty |
Group |
p-value | ||
|---|---|---|---|---|
|
Overall |
Control (n = 28) |
Reflection (n = 33) | ||
|
Easier cases | ||||
|
Accuracy (%) |
69.1 ± 22.3 |
60.1 ± 23.3 |
76.8 ± 18.6 |
0.004 |
|
Confidence (%) |
67.7 ± 17.4 |
65.9 ± 21.0 |
69.2 ± 13.7 |
0.473 |
|
Calibration (−1 a + 1) |
−0.01 ± 0.21 |
0.06 ± 0.22 |
−0.08 ± 0.19 |
0.016 |
|
More difficult cases | ||||
|
Accuracy (%) |
19.9 ± 13.5 |
16.7 ± 12.8 |
22.7 ± 13.7 |
0.080 |
|
Confidence (%) |
55.9 ± 18.6 |
51.8 ± 22.1 |
59.3 ± 14.5 |
0.131 |
|
Calibration (−1 a + 1) |
0.36 ± 0.20 |
0.35 ± 0.20 |
0.37 ± 0.20 |
0.783 |