Research background(3) Symbolic Play Test(Second Edition)to estimate the mental age an ad junctive tool to understand development of subjects 4 separate situations subject is allowed to play with the standard sets of miniature toys with minimal promptingResearch Background (3) • Symbolic Play Test (Second Edition) to estimate the mental age – an adjunctive tool to understand development of subjects – 4 separate situations – subject is allowed to play with the standard sets of miniature toys with minimal prompting