Apparent width reported as a function of (a) listening condition COND (RE: real listening, V: HOA4 auralization), (b) acoustic environment ROOM (R1, R2, R3), (c) the interaction COND × ROOM between the listening condition on the x-axis and acoustic environment in color, (d) the distance from source DIST (D2: source at 2 m, D4: source at 4 m), (e) the interaction COND × DIST between listening condition on the x-axis and source distance in color. Post-hoc results are indicated by stars: p < 0.05 (*), p < 0.01 (**), p < 0.001 (***).