Abstract
This study investigated whether children with autism spectrum disorders (ASDs) exhibit formal thought disorder (FTD), and whether this is related to ASD symptoms, executive control, and anxiety. Participants aged 8–17 with ASDs exhibited significantly more illogical thinking and loose associations than matched typically developing control subjects. In participants with ASDs, illogical thinking was related to aspects of cognitive functioning and to executive control. Loose associations were related to autism communication symptoms and to parent reports of stress and anxiety. When FTD is present in ASDs, it generally is not a co-morbid schizophrenia symptom, but is related to pragmatic language abnormalities found in ASDs. The clinical and neurobiological significance of this work is discussed.

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American Psychiatric Association (2000). Diagnostic and statistical manual of mental disorders (4th ed.), Text Revision. Washington, DC, American Psychiatric Association.
Andreasen, N. (2000) Scale for the assessment of positive symptoms (SAPS) and scale for the assessment of negative symptoms (SANS). Handbook of psychiatric measures (pp. 498–502). Washington, DC: American Psychiatric Association.
Baltaxe, C. A., & D’Angiola, N. (1992). Cohesion in the discourse interaction of autistic, specifically language-impaired, and normal children. Journal of Autism and Developmental Disorders, 22(1), 1–21.
Barber, A. D., & Carter, C. S. (2005). Cognitive control involved in overcoming prepotent response tendencies and switching between tasks. Cerebral Cortex, 15(7), 899–912.
Belser, R. C., & Sudhalter, V. (2001). Conversational characteristics of children with fragile X syndrome: Repetitive speech. American Journal on Mental Retardation, 106(1), 28–38.
Bender, L. (1947). Psychopathic behavior disorders in children. In R. M. Lindner & R. V. Seliger (Eds.), Handbook of correctional psychology (p. 17). Oxford: Philosophical Library.
Berument, S. K., Rutter, M., Lord, C., Pickles, A., & Bailey, A. (1999). Autism screening questionnaire: Diagnostic validity. British Journal of Psychiatry, 175, 444–451.
Bishop, D. V., & Norbury, C. F. (2005a). Executive functions in children with communication impairments, in relation to autistic symptomatology. 1: Generativity. Autism, 9(1), 7–27.
Bishop, D. V., & Norbury, C. F. (2005b). Executive functions in children with communication impairments, in relation to autistic symptomatology. 2: Response inhibition. Autism, 9(1), 29–43.
Caplan, R. (1994). Thought disorder in childhood. Journal of the American Academy of Child and Adolescent Psychiatry, 33(5), 605–615.
Caplan, R., Guthrie, D., Fish, B., Tanguay, P. E., & David-Lando, G. (1989). The Kiddie Formal Thought Disorder Rating Scale: Clinical Assessment, Reliability, and Validity. The Journal of the American Academy of Child and Adolescent Psychiatry, 28(3), 408–417.
Caplan, R., Guthrie, D., Tang, B., Neuchterlein, K.H., & Asarnow, R.F. (2001). Thought disorder in attention-deficit hyperactivity disorder. Journal of the American Academy of Child & Adolescent Psychiatry, 40(8), 965–972.
Caron, C., & Rutter, M. (1991). Comorbidity in child psychopathology: Concepts, issues and research strategies. Journal of Child Psychology and Psychiatry, 32, 1063–1080.
Cohen, J. (1988). Statistical power analysis for the behavioral sciences. Hillsdale: Lawrence Erlbaum.
Cohen, J. D., & Servan-Schreiber, D. (1992). Context, cortex, and dopamine: A connectionist approach to behavior and biology in schizophrenia. Psychological Review, 99(1), 45–77.
Corbett, B. A., Mendoza, S., Abdullah, M., Wegelin, J. A., & Levine, S. (2006). Cortisol circadian rhythms and response to stress in children with autism. Psychoneuroendocrinology, 31, 9.
Docherty, N.M. (1996). Affective reactivity of symptoms as a process discriminator in schizophrenia. Journal of Nervous and Mental Disease, 184(9), 535–541.
Docherty, N. M., Evans, I. M., Sledge, W. H., & Seibel, J. P. (1994). Affective reactivity of language in schizophrenia. Journal of Nervous and Mental Disease, 182(2), 98–102.
Dykens, E., Volkmar, F. & Glick, M. (1991). Though disorder in high-functioning autistic adults. Journal of Autism and Developmental Disorders, 21(3), 291–301.
Fine, J., Bertoucci, G., Szatmari, P., & Ginsberg, G. (1994). Cohesive discourse in pervasive developmental disorders. Journal of Autism and Developmental Disorders, 24(3), 359–373.
Geschwind, D.H., & Levitt, P. (2007). Autism spectrum disorders: Developmental disconnection syndromes. Current Opinions Neurobiology, 17(1), 103–111.
Groden, J., Diller, A., Bausman, M., Velicer, W., Norman, G., & Cautela, J. (2001). The development of a stress survery schedule for persons with autism and other developmental disabilities. Journal of Autism and Developmental Disorders, 31(2), 207–217.
Howlin, P. (2003). Outcome in high-functioning adults with autism with and without early language delays: Implications for the differentiation between autism and Asperger syndrome. Journal of Autism and Developmental Disorders, 33(1), 3–13.
Irani, F., Platek, S., Panyavin, I., Calkins, M., Kohler, C., Siegel, S., Schachter, M., Gur, R. E., & Gur, R. C. (2006). Self-face recognition and theory of mind in patients with schizophrenia and first-degree relatives. Schizophrenia Research, 88(1–3), 151–160.
Joseph, R. M., & Tager-Flusberg, H. (2004). The relationship of theory of mind and executive functions to symptom type and severity in children with autism. Development and Psychopathology, 16(1), 137–155.
Kerns, J. G., & Berenbaum, H. (2002). Cognitive impairments associated with formal thought disorder in people with schizophrenia. Journal of Abnormal Psychology, 111(2), 211–224.
Keshavan, M., & Amirsardi, A. (2007). Early intervention in schizophrenia: Current and future perspectives. Current Psychiatry Reports, 9(4), 325–328.
Kolvin, I. (1971). Studies in the childhood psychoses. I. Diagnostic criteria and classification. British Journal of Psychiatry, 118(545), 381–384.
Konstantareas, M., & Hewitt, T. (2001). Autistic disorder and schizophrenia: Diagnostic overlaps. Journal of Autism and Developmental Disorders, 31(1), 19–28.
Kreher, D., Holcomb, P., & Kuperberg, G. R. (2007). An electrophysiological investigation of indirect semantic priming. Psychophysiology, 43(6), 550–563.
Kuperberg, G. R., Deckersbach, T., Holt, D., Goff, D., & West, C. (2007). Increased temporal and prefrontal activity in response to semantic associations in schizophrenia. Archives of General Psychiatry, 64(2), 138–151.
Kuperberg, G. R., Kreher, D. A., Goff, D., McGuire, P. K., & David, A. S. (2006). Building up linguistic context in schizophrenia: Evidence from self-paced reading. Neuropsychology, 20(4), 442–452.
Leitman, D., Ziwich, R., Pasternak, R., & Javitt, D. (2006). Theory of Mind (ToM) and counterfactuality deficits in schizophrenia: Misperception or misinterpretation?. Psychological Medicine, 36(8), 1075–1083.
Leyfer, O. T., Folstein, S. E., Bacalman, S., Davis, N. O., Dinh, E., Morgan, J., et al. (2006). Comorbid psychiatric disorders in children with autism: Interview development and rates of disorders. Journal of Autism and Developmental Disorders, 36(7), 849–861.
Lord, C., Risi, S., Lambrecht, L., Cook, E. H., Leventhal, B. L., & DiLavore P. C. (2000). The autism diagnostic observation schedule-generic: A standard measure of social and communication deficits associated with the spectrum of autism. Journal of Autism and Developmental Disorders, 30(3), 205–223.
Lord, C., Rutter, M., & Le Couteur, A. (1994). Autism Diagnostic Interview– Revised: A revised version of a diagnostic interview for caregivers of individuals with possible pervasive developmental disorders. Journal of Autism & Developmental Disorders, 24(5), 659–685.
Macintosh, K., & Dissanayake, C. (2004). Annotation: The similarities and differences between autistic disorder and Asperger’s disorder: A review of the emperical evidence. Journal of Child Psychology and Psychiatry, 45(3), 421–434.
Mouridsen, S. E., Rich, B., & Isager, T. (1999). Psychiatric morbidity in disintegrative psychosis and infantile autism: A long-term follow-up study. Psychopathology, 32(4), 177–183.
Ozonoff, S., Goodlin-Jones, B., & Solomon, M. (2007). Autism Spectrum Disorders. In E. Mash & R. Barkley (Eds.), Assessment of childhood disorders (pp. 487–525). New York, NY: Guilford Press.
Ozonoff, S., & Griffith, E. (2000). Neuropsychological function and the external validity of Asperger syndrome. In R. Klin, F. R. Volkmar, & S. S. Sparrow (Eds.), Asperger syndrome (pp. 72–96). New York, NY: Guilford Press.
Ozonoff, S., Pennington, B., & Solomon, M., (2006). Neuropsychological perspectives on developmental psychopathology. In D. Cicchetti & D. Cohen (Eds.), Developmental psychopathology, Vol 2: Developmental neuroscience (2nd ed.). (pp. 332–380). Hoboken, NJ: John Wiley & Sons Inc.
Prizant, B. M., Wetherby, A. M., Rubin, E., Laurent, A. C., & Rydell, P. J. (2006). The SCERTS model: A comprehensive educational approach for children with autism spectrum disorders (Vol. 1). Baltimore: Paul Brookes Publishing.
Psychological Corporation (1999). Wechsler abbreviated scale of intelligence. San Antonio, TX: The Psychological Corporation.
Reynolds, C. R., & Kamphaus, R. W. (1992). Behavior assessment system for children. Circle Pines: American Guidance Service.
Rosano, C., Aizenstein, H., Cochran, J., Saxton, J., De Kosky, S., Newman, A. B., et al. (2005). Functional neuroimaging indicators of successful executive control in the oldest old. Neuroimage, 28(4), 881–889.
Rutter, M. (1972). Childhood schizophrenia reconsidered. Journal of Autism and Childhood Schizophrenia, 2(4), 315–337.
Sasson, N., Tsuchiya, N., Hurley, R., Couture, S., Penn, D., Adolphs, R., & Piven, J. (2007). Orienting to social stimuli differentiates social cognitive impairment in autism and schizophrenia. Neuropsychologia, 45(11), 2580–2588.
Schiffman, J., Walker, E., Ekstrom, M., Schulsinger, F., Sorensen, H., & Mednick, S. (2004). Childhood videotaped social and neuromotor precursors of schizophrenia: A prospective investigation. American Journal of Psychiatry, 161(11), 2021–2027.
Sheitman, B. B., Kraus, J. E., Bodfish, J. W., & Carmel, H. (2004). Are the negative symptoms of schizophrenia consistent with an autistic spectrum illness? Schizophrenia Research, 69, 2.
Snitz, B. E., MacDonald, A. III, Cohen, J. D., Cho, R. Y., Becker, T., & Carter, C. S. (2005). Lateral and medial hypofrontality in first-episode schizophrenia: Functional activity in a medication-naive state and effects of short-term atypical antipsychotic treatment. American Journal of Psychiatry, 162, 2322–2329.
Solomon, M., Ozonoff, S., Carter, C., Caplan, R. (2006). Behavioral and neural correlates of thought disorder in children with autism spectrum disorders. Paper presented at the 53rd Annual Meeting of the American Academy of Child and Adolescent Psychiatry.
Solomon, M., Ozonoff, S., Cummings, N., Carter, C., (2007). Cognitive control in autism spectrum disorders. International Journal of Developmental Neuroscience. [Epub ahead of print].
Sporn, A. L., Addington, A. M., Gogtay, N., Ordonez, A. E., Gornick, M., Clasen, L., et al. (2004). Pervasive developmental disorder and childhood-onset schizophrenia: Comorbid disorder or a phenotypic variant of a very early onset illness? Biological Psychiatry, 55(10), 989–994.
Sudhalter, V., & Belser, R. C. (2001). Conversational Characteristics of Children With Fragile X Syndrome: Tangential Language. American Journal on Mental Retardation, 106(5), 11.
Symond, M. P., Harris, A. W., Gordon, E., & Williams, L. M., (2005). “Gamma synchrony” in first-episode schizophrenia: A disorder of temporal connectivity? American Journal of Psychiatry, 162(3), 459–465.
Szatmari, P., Bryson, S. E., Boyle, M. H., Streiner, D. L., & Duku, E., (2003). Predictors of outcome among high functioning children with autism and Asperger syndrome. Journal of Child Psychology and Psychiatry and Allied Disciplines, 44(4), 520–528.
Tager-Flusberg, H., Pauls, R., & Lord, C. (2005). Language and communication in autism. In F. R. Volkmar, R. Paul, A. Klin & D. Cohen (Eds.), Handbook of autism and pervasive developmental disorders (Vol. 1, pp. 335–364). John Wiley & Sons, Inc.
Towbin, K. E. (2006). Pervasive developmental disorder not otherwise specified. In F. R. Volkmar, R. Paul, A. Klin &; D. Cohen (Eds.), Handbook of autism and pervasive developmental disorders (Vol. 2, pp. 165–200). John Wiley & Sons, Inc.
Van der Gaag, R. J., Caplan, R., Van Engeland, H., Loman, F., & Buitelaar, J. (2005). A controlled study of formal thought disorder in children with autism and multiple complex developmental disorders. Journal of Child and Adolescent Psychopharmacology, 15(3), 465–476.
Volden, J., & Lord, C. (1991). Neologisms and idiosyncratic language in autistic speakers. Journal of Autism and Developmental Disorders, 21(2), 109–130.
Volkmar, F. R., & Cohen, D. J. (1991). Comorbid association of autism and schizophrenia. American Journal of Psychiatry, 148(12), 1705–1707.
Walker, E., Grimes, K., Davis, D., & Smith, A. (1993) Childhood precursors of schizophrenia: Facial expression of emotions. American Journal of Psychiatry, 150(11), 1654–1660.
Wechsler, D. (1999). Wechsler abbreviated scale of intelligence (WASI). San Antonio: Harcourt Assessment.
Acknowledgments
Dr. Solomon was supported by a grant NIH K12 HD051958 from the Building Interdisciplinary Research Careers in Women’s Health program, MIND Institute, and Autism Speaks. Dr. Ozonoff was supported during the writing of this paper by R01 MH068398 and U19-HD35468. Dr. Carter was supported during the writing of this paper by MH64190. The authors also would like to acknowledge Neil Cummings, Kate Wilson and Maria Ventura for assistance in the preparation of this manuscript, and to Drs. Robert Hendren and J. Daniel Ragland for helpful comments on prior drafts.
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Solomon, M., Ozonoff, S., Carter, C. et al. Formal Thought Disorder and the Autism Spectrum: Relationship with Symptoms, Executive Control, and Anxiety. J Autism Dev Disord 38, 1474–1484 (2008). https://doi.org/10.1007/s10803-007-0526-6
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DOI: https://doi.org/10.1007/s10803-007-0526-6