Simulations in the GUSBAD Catalog of gamma-ray bursts suggest that the apparent duration of a burst decreases as its amplitude is decreased .
We see no evidence for this effect in the BATSE catalog .
We show that for a burst at the detection limit , the typical signal-to-noise ratio at the edges of the T _ { 90 } duration is around 1.5 , suggesting that T _ { 90 } must be quite uncertain .
The situation for T _ { 50 } is less unfavorable .
Simulations using the exact procedure to derive the durations listed in the BATSE catalog would be useful in quantifying the effect .