Progressive Time Delay - Purchasing Skills - Description

This is a Practice Description that is a Research-based Practice for students with disabilities based on two methodologically sound single subject studies across 8 participants.  It is also a Promising Practice for students with moderate intellectual disability based on one methodologically sound single subject study with 4 participants with moderate intellectual disability and a Promising Practice for students with severe intellectual disability based on one methodologically sound single subject study with 4 participants w