What is the core principle of the complexity approach in phonological SSD treatment?

• A. More complex linguistic input promotes greater change to untreated targets
• B. Simpler targets yield faster mastery
• C. Targets are chosen randomly
• D. It ignores maximal opposition planning

Answer: (A)

The main idea being tested is that training on more linguistically complex targets can drive broader changes in a child’s phonological system, leading to improvements on sounds that aren’t directly practiced. In the complexity approach, you deliberately select targets that are harder for the child to produce or that require more advanced contrasts. Practicing these difficult targets pushes the child to reorganize underlying phonological representations and develop more robust planning and control over speech. When the system strengthens in this way, the benefits tend to generalize beyond the trained items, so untreated targets also show improvement.

This is why the option describing training with more complex linguistic input as the trigger for greater change to untreated targets is best. Simpler targets, while often easier to master, don’t push the system as hard and thus may yield less broad generalization. Random selection lacks a strategy, and ignoring planning that uses contrasts and complexity clashes with the purpose of the approach, which is to harness the benefit of complexity to promote generalization.