What is the key difference between Traditional and Concurrent Approach? Choose all that apply. What is the key difference between Traditional and Concurrent Approach? Choose all that apply. Concurrent approach uses a behavioral model vs a motor-based model Concurrent approach uses sound shaping techniques and modeling which are not included in Traditional approach The traditional approach uses reinforcement but the concurrent approach does not. The traditional approach increases complexity systematically where the concurrent approach presents target sounds in various randomized complexity levels