To diagnose stilted speech, researchers have previously looked for the following characteristics:[8]
speech conveying more information than necessary
vocabulary and grammar expected from formal writing rather than conversational speech
unneeded repetition or corrections
While literal and long-winded word content is often the most identifiable feature of stilted speech, such speech often displays irregular prosody, especially in resonance.[8] Often, the loudness, pitch, rate, and nasality of pedantic speech vary from normal speech, resulting in the perception of pedantic or stilted speaking. For example, overly loud or high-pitched speech can come across to listeners as overly forceful while slow or nasal speech creates an impression of condescension.[9]
These attributions, which are commonly found in patients with ASD,[9] partially account for why stilted speech has been considered a diagnostic criterion for the disorder.[8] Stilted speech, along with atypical intonation, semantic drift, terseness, and perseveration, are all known deficits with adolescents on the autistic spectrum.[10] Often, stilted speech found in children with ASD will also be especially stereotypic or in some cases even rehearsed.[10]
Patients with schizophrenia are also known to experience stilted speech. This symptom is attributed to both an inability to access more commonly used words and a difficulty understanding pragmatics—the relationship between language and context.[11] However, stilted speech appears as a less common symptom compared to a certain number of other symptoms of the psychosis (Adler et al 1999).[12] This element of cognitive disorder is also exhibited as a symptom in the narcissistic personality disorder (Akhtar & Thomson 1982).[13]
^Peter F. Liddle, Royal College of Psychiatrists Disordered mind and brain: the neural basis of mental symptoms, 301 pages RCPsych Publications, 2001 Retrieved 2012-01-12 ISBN1-901242-65-X
^Victor Peralta, Manuel J. Cuesta, Jose de Leon Title:Formal thought disorder in schizophrenia: A factor analytic study, Publication:Comprehensive Psychiatry Elsevier March–April 1992, Elsevier Retrieved 2012-01-12
^Khan M (2022). "Understanding and psychosocial treatment of schizoid personality disorder: a cognitive behavioural, psychoanalytical and bio energetic analysis approach". In Naik S (ed.). Emerging trends in medical sciences. Vol. 4. New Delhi: Integrated publications. pp. 45–62. ISBN978-93-95118-07-1.
^ abShriberg, L. D.; Paul, R.; McSweeny, J. L.; Klin, A. M.; Cohen, D. J.; Volkmar, F. R. (October 2001). "Speech and prosody characteristics of adolescents and adults with high-functioning autism and Asperger syndrome". Journal of Speech, Language, and Hearing Research. 44 (5): 1097–1115. CiteSeerX10.1.1.385.7116. doi:10.1044/1092-4388(2001/087). ISSN1092-4388. PMID11708530. S2CID1676598.
^ abde Villiers, Jessica; Fine, Jonathan; Ginsberg, Gary; Vaccarella, Liezanne; Szatmari, Peter (August 2007). "Brief report: a scale for rating conversational impairment in autism spectrum disorder". Journal of Autism and Developmental Disorders. 37 (7): 1375–1380. doi:10.1007/s10803-006-0264-1. ISSN0162-3257. PMID17082976. S2CID6433996.