How does this analogy illustrate the visible and hidden aspects of the disorder?

Stuttering is a speech problem. The normal flow of speech is disrupted. A child who stutters repeats or prolongs sounds, syllables, or words. Jul 14, 2014 ... According to this research, stuttering is caused by an involuntary physical reaction to stress known as the Valsalva Maneuver. Acquired causes in adults include strokes and medications. When stuttering occurs with seizure-like events, it is usually attributed to psychogenic nonepileptic ... In short, stuttering is thought to be a physical disorder and is not caused by psychological factors such as nervousness or stress, or parenting practices or ... acquired or late-onset stammering – is relatively rare and happens in older children and adults as a result of a head injury, stroke or progressive neurological ... Büchel C, Sommer M (2004) What Causes Stuttering? PLoS Biol 2(2): e46. doi:10.1371/journal.pbio.0020046 Published: February 17, 2004 Feb 2, 2021 ... You also may notice physical signs that are characteristic of stuttering. These include the head and eyes rolling backward as the person ... Neurogenic or acquired stuttering occurs after a definable brain damage, e.g., stroke, intracerebral hemorrhage, or head trauma. It is a rare phenomenon that ... Stuttering may occur when a combination of factors comes together and may have different causes in different people. It is probable that what causes stuttering ... Mar 6, 2017 ... Most scientists and clinicians believe that developmental stuttering stems from complex interactions of multiple factors. Recent brain imaging ...