Gender in voice perception in autism.

The team asked the adults with high-functioning autism and 24 typical adults to press a key when they heard a male or female voice. Each person heard 120 short words, half spoken by men and half by women. The researchers timed how fast and how accurately each listener chose.

All volunteers had normal hearing and IQ. The task took 10 minutes in a quiet lab room.

Both groups labeled the gender almost perfectly—about a large share right. The autism group, however, took roughly 100 milliseconds longer to decide. Their delay stayed the same no matter how clear or loud the voice was.

Accuracy was intact, but speed was not.

Faja et al. (2009) used the same lab set-up with faces. They also found slower speed in autism, but accuracy dropped too. The voice study shows the timing problem can happen even when accuracy stays solid.

Eussen et al. (2016) scanned adults with autism while they watched fearful faces. The amygdala took longer to calm down, matching the slower voice-gender timing. Together, the studies point to a wide, brain-level timing difference.

Erickson et al. (2016) tested simple beeps and flashes in kids with autism and found normal speed. This seems like a clash, but their stimuli were basic sounds, not speech. Speech cues may be the special trigger for the delay.

You can trust that clients with high-functioning autism usually hear gender correctly, so don’t waste time re-teaching that skill. Do give them extra wait-time before you expect an answer. A brief pause—just a tenth of a second—can cut missed cues and lower frustration during social skills groups or when you use video models.