Autism Spectrum DisorderASDANCT06375226
Autism and Attachment. An Explorative Study of Attachment Styles in Autistic Adults.
An observational study of Autism Spectrum Disorder, run by Parnassia Groep at 1 site in Netherlands.
Trial summary
The present study examines the relationship between attachment and autism spectrum disorder (ASD) in adults. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Autism Spectrum Disorder
- How many people
- 32 participants
- Where
- 1 siteNetherlands
- Study dates
- 1 Mar 2024to 1 May 2025
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Adults (>18 years) with ASD, and without intellectual disability. Participants will be recruited from SARR Autism Rotterdam and Antes, both part of Parnassia Group in the Netherlands. SARR Autism Rotterdam is specialized in psychodiagnostic assessments and interventions for children, adolescents, and adults with ASD. Antes and Parnassia Group are multisite mental health institutes specialized in psychodiagnostic assessments and interventions for adults with a broad range of psychiatric disorders, including ASD.
Who may be able to join
- a primary clinical diagnosis of DSM-5 ASD (APA, 2013)
- age 18 - 65 years
- no intellectual disability (IQ > 80)
Who cannot join
- acute psychosis
- acute suicidality
- psychotic disorder
- intellectual disability (IQ < 80)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Autism Spectrum Disorder and Attachment. An Explorative Study of Attachment Styles in Adults With Autism Spectrum Disorder
The present study examines the relationship between attachment and autism spectrum disorder (ASD) in adults.
Read the detailed description
Rationale: Previous research on autism spectrum disorder (ASD) and attachment has improved understanding of the aetiology and development of the disorder. Research on adults with ASD, however is scarce. The study is focussed on attachment in adults with ASD. Objective: The aim of the current study is to explore attachment styles of adults with ASD and examining the relationship between attachment and ASD.
The study requires 60 participants.
- Conditions
- Autism Spectrum Disorder
- Keywords
- Autism Spectrum Disorder, Attachtment, Adults
- Medical subject headings
- Autism Spectrum Disorder
What is being measured
The primary outcome is the main question the study is designed to answer.
The Social Responsiveness Scale - Adult version (SRS-A)
The SRS-A is a screening tool for identifying possible ASD characteristics in adults suspicious for ASD, is 64-item self-report questionnaire measuring various dimensions of interpersonal behavior, communication, and rigid, repetitive behaviour and interests, characteristic for adults with ASD. Each item is rated on a 1-4 point scale.
Measured: 15 minutes
The Attachment Styles Questionnaire (ASQ)
The ASQ is a questionnaire consisting of 24 items and assesses four attachment styles (secure, preoccupied, fearful, and dismissing). The 5-point rating scale ranges from 1 (strongly disagree) to 5 (strongly agree).
Measured: 15 minutes
Experiences in Close Relationships - Revised questionnaire (ECR-r)
The ECR-r measures adult attachment within romantic relationships in past and present in 36 items, consisting of two subscales of 18 items each (attachment anxiety and attachment avoidance). Each item is rated from 'strongly disagree' (1) to 'strongly agree' (7).
Measured: 15 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Apr 2024
- Study start1 Mar 2024
- Primary completion1 May 2025
- Study completion1 May 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Autism Spectrum DisorderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 32 participants (actual)
Sponsor and investigators
- Lead sponsor
- Parnassia Groep
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Stephanie Bohnen, Parnassia Groep
- Investigators
- Richard Vuijk, Dr., Principal investigator, Parnassia Groep Antes
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06375226
- Sponsor's protocol ID
- 2023.17
- Other IDs
- 2023.0871
- Acronym
- ASDA
- Status last verified
- Jun 2026
- First submitted
- 16 Apr 2024
- Last updated
- 26 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 26 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Autism Spectrum Disorder and Attachment. An Explorative Study of Attachment Styles in Adults With Autism Spectrum Disorder
- ClinicalTrials.gov ID
- NCT06375226
- Acronym / sponsor ID
- ASDA / 2023.17
- Conditions
- Autism Spectrum Disorder
- Keywords
- Autism Spectrum Disorder, Attachtment, Adults
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 32 participants (actual)
- Lead sponsor
- Parnassia GroepUniversity, hospital or other
- Study start
- 1 Mar 2024 (actual)
- Primary completion
- 1 May 2025 (actual)
- Study completion
- 1 May 2025 (actual)
- First posted
- 19 Apr 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The present study examines the relationship between attachment and autism spectrum disorder (ASD) in adults.
Detailed description
Rationale: Previous research on autism spectrum disorder (ASD) and attachment has improved understanding of the aetiology and development of the disorder. Research on adults with ASD, however is scarce. The study is focussed on attachment in adults with ASD. Objective: The aim of the current study is to explore attachment styles of adults with ASD and examining the relationship between attachment and ASD.
The study requires 60 participants.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Adults (>18 years) with ASD, and without intellectual disability. Participants will be recruited from SARR Autism Rotterdam and Antes, both part of Parnassia Group in the Netherlands. SARR Autism Rotterdam is specialized in psychodiagnostic assessments and interventions for children, adolescents, and adults with ASD. Antes and Parnassia Group are multisite mental health institutes specialized in psychodiagnostic assessments and interventions for adults with a broad range of psychiatric disorders, including ASD.
Key inclusion criteria (3 listed)
Key exclusion criteria (4 listed)
- acute psychosis
- acute suicidality
- psychotic disorder
- intellectual disability (IQ < 80)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
The Social Responsiveness Scale - Adult version (SRS-A)
Time frame: 15 minutes
The SRS-A is a screening tool for identifying possible ASD characteristics in adults suspicious for ASD, is 64-item self-report questionnaire measuring various dimensions of interpersonal behavior, communication, and rigid, repetitive behaviour and interests, characteristic for adults with ASD. Each item is rated on a 1-4 point scale.
The Attachment Styles Questionnaire (ASQ)
Time frame: 15 minutes
The ASQ is a questionnaire consisting of 24 items and assesses four attachment styles (secure, preoccupied, fearful, and dismissing). The 5-point rating scale ranges from 1 (strongly disagree) to 5 (strongly agree).
Experiences in Close Relationships - Revised questionnaire (ECR-r)
Time frame: 15 minutes
The ECR-r measures adult attachment within romantic relationships in past and present in 36 items, consisting of two subscales of 18 items each (attachment anxiety and attachment avoidance). Each item is rated from 'strongly disagree' (1) to 'strongly agree' (7).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Jun 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Richard Vuijk, Dr. principal investigator
Parnassia Groep Antes
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Autism Spectrum Disorder, run by Parnassia Groep at 1 site in Netherlands.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The Social Responsiveness Scale - Adult version (SRS-A) (time frame: 15 minutes). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jun 2026.