Exposure Therapy for Auditory Sensitivity in Autism

Summary

Auditory hyper-reactivity affects up to 66% of children with autism spectrum disorder (ASD) and has been linked to greater stress and anxiety for children and their families. Exposure and Response Prevention (E/RP) is highly effective for reducing obsessive/compulsive behaviors in children with both OCD and ASD. This study is the first to assess the feasibility and efficacy of E/RP for auditory sensory hyper-reactivity in ASD.

Conditions

• Sensory Disorders
• Autism
• Autism Spectrum Disorder
• Autism With High Cognitive Abilities
• Autistic Behavior
• Hyperacusis

Interventions

BEHAVIORAL

Exposure therapy

The therapist, child and family collaborate to set short and long term goals, develop the exposure hierarchy and Subjective Units of Distress (SUD) scale and design their "challenge" activities (i.e., exposures). The exposure hierarchy lists activities in ascending order from minimal exposure/minimally difficult (e.g, toilet is not flushed and bathroom door is closed while child walks by) to maximum exposure/maximally difficult (e.g., toilet is flushed repeatedly while child is inside the stall with the door closed). Treatment begins with exposure to activities on the lower end of the hierarchy, with adjustments as indicated, to present stimuli that provide a "just-right" level of difficulty as indicated by the participant's SUD level and therapists clinical judgment. Participants communicate the level of difficulty using their individualized SUD scale. Additionally, the child and family complete home exercises with exposures.

BEHAVIORAL

Psycho-education

Child and caregiver receive education and training will be provided to improve the participant's self-awareness of his/her behavioral and emotional response to auditory stimuli, his/her ability to self-report anxiety/emotional response levels, as well as his/her ability to identify useful arousal level modulation/coping strategies. During this phase, the child, caregiver and therapist will collaborate to identify the participant's Subjective Units of Distress Scale (SUD) from 0-10 with each level defined, particularly for what levels are tolerable or intolerable.

BEHAVIORAL

Caregiver education/home program development

Parents will be provided with education on home programs to facilitate treatment gains. Home programs will be designed specifically for each participant. Parent education and home programs are provided either concurrently or after the exposure phase for the family to apply these methods to other settings. Home programs can continue as a maintenance program after treatment has ended. At the end of the treatment phase, the study team will conduct the following assessments for a third time: (1) the Sensory Profile, a clinical tool commonly used in OT to assess parent reports of sensory processing difficulties in children, (2) Parent Stress Index - 4 to evaluate stress related to parent-child interactions, and (3) the Modified Khalfa Hyper-acusis Questionnaire to assess the level of hyper-sensitivity to sound.

Sponsors & Collaborators

• University of Florida

  lead OTHER

Principal Investigators

• Tana Carson, PhD · Adjunct Associate Research Professor

Study Design

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

5 Years

Max Age

17 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2017-09-30

Primary Completion

2019-05-31

Completion

2019-05-31

Countries

• United States

Study Locations