The aim of this study was to determine whether the AX and ABX tasks provide the same or different information on perception of speech sounds in a sample of children with speech sound disorders.The participants consisted of 86children with an age range of 3 to 5years (mean, 4years and 7months). The children had speech sound disorders and were selected from a sample of 1283children from 11different schools in Valencia (Spain) whose first language was Spanish.First, we assessed speech production. Depending on the errors made by each child, ABX and AX tasks were constructed and applied, using Locke criteria for assessing speech perception in children with developmental language disorders. We analyzed whether the results of the two tasks were related and we determined the strength of the agreement between the results of the two tasks.The results support the hypothesis that both tasks are related when they measure speech perception in children. However, the degree of agreement was only acceptable, perhaps because the two tasks evaluate different aspects of speech perception. Given the low time investment, application of both tasks may be a prudent approach in clinical practice.