New research published in International Journal of Sexual Health Differences in sensory processing in adults with autism are associated with higher levels of sexual distress, suggesting that this may in turn reduce overall relationship and sexual satisfaction. This study provides evidence that addressing these specific sensory needs may help people with autism reduce anxiety and improve their intimate lives.
Differences in sensory processing define life for many people with autism. These differences affect how people experience their physical environments and social interactions. People with these differences may experience sensitivities. This means that they are highly responsive to things like light touch, loud noises, and bright lights. On the other hand, you may experience hyposensitivity, which is a decreased response to sensory input and a tendency to seek out more intense sensations.
These sensory differences can be manifested in all five traditional senses, as well as in systems governing body balance and body awareness. Qualitative interviews often suggest that sensory needs shape physical affection and intimacy. For example, a person with autism may find certain types of touch painful or distracting, or may need a certain level of physical pressure to feel calm and connected.
Despite these qualitative reports, quantitative data on this topic are lacking. Gabriella Rose Petruzzello, a psychology doctoral student at the University of New Brunswick, designed a study with Barbara d’Entremont to fill this gap in the scientific literature. They wanted to assess how these different sensory profiles specifically relate to different aspects of intimacy.
“There has been a significant gap in the literature regarding how sensory processing hypersensitivity, which includes both hyposensitivity and hypersensitivity, is associated with outcomes such as sexual satisfaction, relationship satisfaction, sexual distress, and sexual function in adults with autism,” said Petruzzello. “Previous studies have looked at this topic from a qualitative, open-ended lens, but this is the first quantitative study on this topic.”
“Both forms of research are extremely valuable, but our study can provide concrete statistics on the magnitude and presence of effects,” Petruzzello added. Previous research on autistic sexuality has often focused on perceived disability. Petruzzello and d’Entremont espoused an alternative perspective, viewing autism through the lens of unique strengths and differences rather than inherent deficiencies.
During the study, researchers recruited an international sample of English-speaking adults through an online crowdsourcing platform. Eligible participants had to be 21 years of age or older, identify as autistic, and have a history of a romantic relationship that lasted at least 3 months. The final sample included 144 adults with autism who were currently in a romantic relationship and living in the United States, United Kingdom, Canada, or Australia.
Participants ranged in age from 21 to 72 years old. Approximately half of the participants were female, approximately 41 percent were male, and the remainder identified as nonbinary, genderqueer, or agender. More than 70% of the sample had a formal clinical diagnosis of autism, while the remaining participants were self-diagnosed.
Researchers included people who self-diagnose to account for the frequent financial and institutional barriers that prevent many adults from receiving formal medical evaluation. “Although we did not require individuals to have a formal diagnosis, findings held regardless of diagnostic status (self or professional) and a screening tool was used to ensure participants had sufficiently high levels of autistic traits,” Petruzzello explained.
Participants completed a series of standardized online questionnaires to assess their sensory processing characteristics and intimate lives. First, the researchers used a standard questionnaire to measure autistic traits and a separate scale to assess hyperreactivity and hyporeactivity. Participants then answered detailed questions about their sexual function, including their sexual desire, ease of arousal, and ability to reach orgasm.
To measure emotional responses to intimacy, scientists utilized a scale that records personal distress related to sexuality. This measure captures negative emotions such as stress and frustration regarding a person’s sexual experience. Finally, the researchers asked participants to rate their sexual and romantic relationships on a bipolar scale, and administered a general satisfaction questionnaire that compared qualities such as pleasant or unpleasant.
When Petruzzello and D’Entremont analyzed their data, they found that their sample generally reported high levels of sexual satisfaction and relationship satisfaction. The majority of participants viewed romantic relationships and physical intimacy positively. However, a notable minority of participants reported experiencing sexual difficulties, which caught the attention of researchers.
“In addition to the findings regarding sensory processing and sexual distress, our study also found that approximately 33% of autistic adults reported impairments in sexual function in one or more areas (e.g., arousal, lubrication), and that two-thirds of autistic women exceeded criteria indicating high levels of sex-related personal distress,” Petruzzello told PsyPost. “These statistics are particularly alarming and call for further research into the causes of sexual function problems and distress, as well as applied research into ways to increase sexual self-efficacy and reduce anxiety in this population.”
For example, about 14 percent of partners reported very low sexual desire, while a minority reported no sexual desire at all. More than a tenth of participants reported that it was very difficult to become sexually aroused, and a similar proportion reported great difficulty with vaginal lubrication and erectile function.
The authors note that women often face restrictive social frameworks that expect them to meet the physical needs of their partners. These pressures, combined with the historically high risk of nonconsensual sexual experiences among autistic women, may contribute to this increased psychological distress. When examining sensory processing, researchers found that both hypersensitivity and hypersensitivity were moderately associated with greater sexual pain.
“The important takeaway from this study is that both forms of sensory processing hypersensitivity are associated with increased sexual pain,” Petruzzello said. “In other words, both those who were less sensitive to their sensory environment and those who were more sensitive had higher levels of sexual distress.”
Petruzzello noted that increased sexual distress can be a red flag that a person is having difficulty dealing with a particular problem. “This sexual distress was associated with other negative outcomes, including lower sexual and relationship satisfaction,” she said. This suggests that both an aversion to certain sensations and a need for intense sensory input may contribute to frustration during intimate moments.
“The effect size of the association between sensory processing hypersensitivity and sexual pain was moderate,” Petruzzello added. “The qualitative literature on which this study is based shows that this effect is not trivial and that this distress can have real effects on autistic individuals and their partners.”The researchers noted that heightened sensitivity related to smell, balance, and body position was particularly associated with high sexual stress.
Interestingly, the data showed no direct statistical relationship between sensory processing sensitivity and sexual function. Similarly, sensory sensitivity was not directly related to overall sexual or relationship satisfaction. This lack of a direct relationship was somewhat surprising, so the authors conducted an exploratory statistical analysis to see if an indirect relationship existed.
They found that differences in sensory processing were associated with increased levels of sexual distress, which subsequently predicted decreased sexual and romantic satisfaction. This indirect pathway provides evidence that sensory differences themselves are not necessarily direct barriers to happy relationships. Rather, the emotional pain and frustration associated with unmet sensory needs tends to be the actual factor that undermines relationship satisfaction.
Although these findings provide useful insights, this study includes several limitations that readers should be aware of. Because this study relied on cross-sectional data taken at a single time point, it is impossible to prove a strict causal relationship between sensory sensitivity and sexual pain. Feeling stressed about intimacy can make people more sensitive to their sensory environment, rather than the other way around.
“Because this study only included one time point, we cannot claim that differences in sensory processing cause more distress in individuals,” Petruzzello cautioned. “It’s also possible that people who are more sensitive to pain are more acutely aware of sensory differences.” However, she noted that the participants’ own words provided further context to the findings.
“In open-ended responses that were part of a broader survey, participants frequently described sensory sensitivity as upsetting and distressing, and that it could have negative consequences for their sexual and relationship experiences,” Petruzzello explained. The researchers also noted that the sample was primarily highly educated, employed, and predominantly white.
The requirement that participants be in a relationship for at least 3 months may reflect survivorship bias. This means that the results may not accurately represent the experiences of single autistic adults or adults in less stable relationships. Future research should aim to include a more diverse set of participants, including representation of different racial backgrounds and LGBTQ individuals.
Scientists recommend conducting cross-cultural studies to see how different social norms regarding physical boundaries affect these sensory and sexual dynamics. Future research could investigate specific sensory areas, such as smell or body balance, to understand exactly how they evoke negative emotions in romantic settings. Continuing this line of research allows experts to develop better educational resources and clinical treatments.
“My co-authors and I are currently working on publishing other studies from this dataset,” Petruzzello said. “We hope our research proves that differences in sensory processing are not inherently problematic and can hinder sexual and relational experiences if individuals do not have sufficient knowledge or ability to manage them.” These customized programs can help adults with autism communicate their specific sensory needs, reduce sexual anxiety, and foster physical intimacy in their own way.
The study, “Differences Are Not Deficiencies: Sensory Processing Sensitivity and Sexual and Relational Well-Being in Adults with Autism,” was authored by Gabriella Petruzzello and Barbara d’Entremont.
