Validation of the Maltese Adaptive Auditory Speech Test (AAST)

Area of Science:

• Audiology
• Speech-Language Pathology
• Developmental Pediatrics

Background:

• The Adaptive Auditory Speech Test (AAST) is a validated tool for assessing Speech Recognition Threshold (SRT).
• Standardized speech materials are available in multiple languages for interlingual validity.
• Assessing pediatric hearing is crucial for early intervention and developmental outcomes.

Purpose of the Study:

• To establish normative data for the Maltese version of the AAST in children and adults.
• To evaluate speech recognition in quiet, noise, and high-frequency conditions.
• To investigate age-related changes in speech recognition thresholds.

Main Methods:

• The Maltese AAST was administered to 208 children (4+ years) and 40 adults.
• Speech Recognition Thresholds (SRTs) were measured in three conditions: quiet, noise, and high frequency.
• Statistical analysis was performed to determine age-dependent norms.

Main Results:

• A significant age-dependent improvement in SRTs was observed in children, consistent with other AAST versions.
• A 10 dB difference in quiet SRTs was noted between 4-year-old and 10-year-old children.
• SRTs for 10-year-olds and adults were comparable in quiet and high-frequency conditions.

Conclusions:

• The Maltese AAST provides reliable, age-specific norms for pediatric and adult hearing assessments.
• Findings support the use of AAST for monitoring speech recognition development post-newborn hearing screening.
• The test is valuable for identifying age-related changes in auditory processing.