More is less: pitch discrimination and language delays in children with optimal outcomes from autism.

The team compared three groups of preschoolers: kids who once had autism but no longer met the cut-off, kids who still had autism, and typically developing peers.

Each child played a simple pitch game. They heard pairs of tones and said whether the second tone sounded higher or lower.

The researchers also gave language tests to see how well the children understood words and sentences.

Children who still had autism were extra sharp at telling tiny pitch changes apart. The kids who lost the diagnosis scored like typical peers—no super hearing.

Among all children, the better the pitch skill, the worse the language scores. Super pitch did not help talking; it flagged trouble.

Tonnsen et al. (2016) saw the same super pitch in adults who still had autism, showing the trait can stay into adulthood. Inge-Marie et al. now show it is already absent in preschoolers who beat the diagnosis.

Chen et al. (2019) tracked brain waves over ten months and also linked odd early auditory responses to later language delays. Both studies point to the same warning sign but use different tools.

The papers seem to clash on whether sharp pitch is good or bad. It is bad when it shows up—kids who keep super pitch tend to keep language struggles. Kids who lose super pitch tend to lose autism symptoms.

You can use a five-minute pitch game during intake. If a preschooler scores sky-high, double-check receptive language and start language-rich interventions early. Do not celebrate 'perfect pitch'—treat it as a red flag for communication risk.