Speech Intelligibility Measurement
Speech Intelligibility Measurement - Related Videos
01:29
Measures of Intelligence
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2025
Psychologists measure intelligence by using standardized tests that produce a score known as the intelligence quotient or IQ. To understand IQ tests, it's important to recognize the key principles behind their construction: validity, reliability, and standardization. Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this; it...
08:32
Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
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Cited by 41 •
2017
Ultrasound imaging can be used to display the shape and movements of the tongue in real time during speech. The images can be used to determine the nature of speech sound errors. Visual feedback of the tongue can be used to facilitate improvements in speech sound production in clinical populations.
01:23
Wechsler's Contribution to Measures of Intelligence
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2025
David Wechsler, a psychologist who worked with World War I veterans, developed a significant IQ test in 1939 called the Wechsler-Bellevue Intelligence Scale. This test was innovative because it combined several subtests that measured both verbal and nonverbal skills, reflecting Wechsler's belief that intelligence is a global capacity involving purposeful action, rational thinking, and effective interaction with the environment. This test later evolved into the Wechsler Adult Intelligence Scale...
01:23
Binet's Contribution to Measures of Intelligence
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2025
Alfred Binet, along with his student Théophile Simon, was tasked by the French Ministry of Education in 1904 to create a method for identifying students who struggled to learn through conventional classroom instruction. This initiative aimed to address overcrowding by placing such students in specialized schools. Binet and Simon developed an intelligence test comprising 30 tasks, ranging from simple commands, like touching one's nose or ear, to more complex tasks, such as drawing designs from...
12:43
A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)
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Cited by 40 •
2011
Objective assessments of the physiological mechanisms that support speech are needed to monitor disease onset and progression in persons with ALS and to quantify treatment effects in clinical trials. In this video, we present a comprehensive, instrumentation-based protocol for quantifying speech motor performance in clinical populations.
FAQs
The listening condition determines which aspect of communication the score reflects. Testing in quiet can show how accurately a listener recognizes standardized material when competing sound is absent, whereas background-noise testing examines understanding under a more demanding condition. Comparing these results helps describe communication difficulties that may not appear equally across different listening environments.
Testing with and without a hearing device shows whether performance changes when amplification or implant-based assistance is available. The comparison can contribute to hearing-aid and cochlear-implant evaluation by documenting speech understanding under each condition. It also provides information that can support treatment planning when clinicians consider how device use relates to functional communication.
These materials provide different standardized ways to sample spoken-language understanding. Words offer individual items, sentences present speech in a larger linguistic unit, and connected speech represents a more continuous passage. Selecting among them allows an assessment to examine performance across forms of spoken communication while retaining a structured basis for scoring.
A controlled assessment presents standardized words, sentences, or connected speech to a listener. The listener then repeats the material or transcribes what was heard, and the examiner scores the proportion identified correctly. The procedure can be conducted in quiet or background noise and may include conditions with or without hearing devices.
Clinicians can use these measures when characterizing hearing loss, speech and language disorders, or broader communication difficulties. Results also support hearing-aid and cochlear-implant evaluation, treatment planning, and rehabilitation monitoring. Because the assessment produces a performance score under defined conditions, it can help document communication status and changes over time.
In medical research, these measures provide structured outcomes for studying factors that affect everyday speech understanding. Investigators can compare performance across standardized speech materials, listening conditions, or hearing-device conditions. The resulting scores help connect controlled test performance with functional communication and can also inform evaluation of rehabilitation or treatment-related changes.