Production and perception of emotional prosody by adults with autism spectrum disorder.
Adults with autism can speak the right emotion yet still sound odd to others.
01Research in Context
What this study did
The team recorded the adults with autism reading emotional sentences.
They measured loudness, length, and pitch changes in the speech.
Listeners then guessed the emotion and rated how natural it sounded.
What they found
Adults with autism spoke louder, slower, and with bigger pitch swings.
Listeners could name the emotion more accurately than with typical speech.
Yet the same listeners said the speech sounded odd or fake.
How this fits with other research
Tonnsen et al. (2016) found the same pitch swings in Cantonese speakers with autism.
This backs up the idea that prosody differences are real across languages.
Burrows et al. (2018) showed faces also look less natural in autism.
Together, these papers paint a full picture: both voice and face can show the right emotion, but still seem off to others.
Thomas et al. (2021) adds that kids with autism feel emotions in the body more alike, hinting the difference starts early and spans many channels.
Why it matters
When you teach social skills, do not just check if the learner names the right emotion. Also check if the way they say it feels natural to peers. Simple voice recording apps can give you quick feedback on loudness, speed, and pitch range.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Record your learner saying 'I am happy' and 'I am sad,' then play it back to two new listeners and ask, 'Does this sound natural? Why or why not?'
02At a glance
03Original abstract
UNLABELLED: This study examined production and perception of affective prosody by adults with autism spectrum disorder (ASD). Previous research has reported increased pitch variability in talkers with ASD compared to typically developing (TD) controls in grammatical speaking tasks (e.g., comparing interrogative vs. declarative sentences), but it is unclear whether this pattern extends to emotional speech. In this study, speech recordings in five emotion contexts (angry, happy, interested, sad, and neutral) were obtained from 15 adult males with ASD and 15 controls (Experiment 1), and were later presented to 52 listeners (22 with ASD) who were asked to identify the emotion expressed and rate the level of naturalness of the emotion in each recording (Experiment 2). Compared to the TD group, talkers with ASD produced phrases with greater intensity, longer durations, and increased pitch range for all emotions except neutral, suggesting that their greater pitch variability was specific to emotional contexts. When asked to identify emotion from speech, both groups of listeners were more accurate at identifying the emotion context from speech produced by ASD speakers compared to TD speakers, but rated ASD emotional speech as sounding less natural. Collectively, these results reveal differences in emotional speech production in talkers with ASD that provide an acoustic basis for reported perceptions of oddness in the speech presentation of adults with ASD. Autism Res 2017, 10: 1991-2001. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study examined emotional speech communication produced and perceived by adults with autism spectrum disorder (ASD) and typically-developing (TD) controls. Compared to the TD group, talkers with ASD produced emotional phrases that were louder, longer, and more variable in pitch. Both ASD and TD listeners were more accurate at identifying emotion in speech produced by ASD speakers compared to TD speakers, but rated ASD emotional speech as sounding less natural.
Autism research : official journal of the International Society for Autism Research, 2017 · doi:10.1007/s11689-010-9068-x