Table 4 Step 1 experimental results
Evaluation item | n | LifeLines (N = 40) | V-Model (N = 40) | Statistical analysis | |||
|---|---|---|---|---|---|---|---|
n_c (accuracy) | RT (sec.) median, IQR(25–75) | n_c (accuracy) | RT (sec.) median, IQR (25–75) | chi-squared test (p-value) | MWU test (p-value) | ||
Representation | |||||||
[P1] P-A connection | 140 | 71 (50.71) | 43.32 (33.08-61.91) | 115 (82.14) | 35.31 (24.99-50.24) | <0.000 | <0.000 |
[P2] non-explicitness | 40 | - | - | 36 (90.00) | - | - | - |
[P3] proximity | 80 | - | - | 74 (92.50) | - | - | - |
Reasoning | |||||||
[R1] P precedes A | 40 | 36 (90.00) | 35.48 (25.23-47.77) | 40 (100.00) | 14.9 (12.15-18.74) | 0.116 | <0.000 |
[R2] qualitative relation | 80 | 76 (95.00) | 7.6 (5.16-11.97) | 69 (86.25) | 9.95 (6.23-13.84) | 0.058 | 0.036 |
[R3] implicit distance | 40 | - | - | 40 (100.00) | - | - | - |
Visualization | |||||||
[V1] intuitive P-A relation | 140 | 104 (74.29) | 32.17 (21.46-54.07) | 125 (89.29) | 19.48 (15- 29.58) | <0.000 | <0.000 |
40 | 25 (62.50) | 56.82 (44.92-80.35) | 21 (52.50) | 45.72 (33.93-62.79) | 0.366 | 0.006 | |
[V5] long history | 40 | 22 (55.00) | 92.7 (69.64-134.48) | 38 (95.00) | 35.23 (25.84-40.46) | <0.000 | <0.000 |
Evaluation item | Group | LifeLines (%) | V-Model (%) | ||||
[P04] uneven granularity | V-Model participants | 3.75 | 96.25 | ||||
(selection) | LifeLines participants | 7.5 | 92.5 | ||||
mean | 5.63 | 94.38 | |||||
[V04] dynamic scale | V-Model participants | 5 | 95 | ||||
(preference) | LifeLines participants | 25 | 75 | ||||
mean | 15 | 85 | |||||