A simplified method for increasing mail-sorting efficiency

Abstract

Compared the number of pieces of mail sorted in a specified time for 2 groups of 10 undergraduates each. 1 group used standard post office department sorting techniques while the other used color-coded street names. Using a t test, the null hypothesis of no difference was rejected at the .05 level of confidence. The innovative technique was found to be superior to the conventional one. (PsycInfo Database Record (c) 2025 APA, all rights reserved)