Taking into account findings in the literature, the author aimed to test whether specific graphical characteristics of handwriting can distinguish patients diagnosed with schizophrenic disorders from healthy controls. Handwriting samples (one sample from each person) from 60 outpatients (29 women, 31 men; age M = 28.5, SD = 5.4) with paranoid schizophrenia were analyzed by three documents examiners and were compared to samples from 60 controls (30 men, 30 women, age M = 28.0, SD = 3.0) without psychiatric disorders. Document examiners assessed 32 graphical features potentially related to schizophrenia. The comparisons between groups revealed that only 7 out of 32 handwriting properties were significantly different in the handwriting of schizophrenic outpatients from controls: the calligraphic forms of letters, loops in ovals, lacking of dots, tremor, sinusoidal baseline, and irregularities size of lower zone. These findings are discussed in terms of motor disturbances in schizophrenia and in relation to the previous research on handwriting of other mental disorders. Similarities between the graphical patterns of handwriting of schizophrenic patients and those of other mental disorders and/or other mental states have been demonstrated.
BastinC. (1988) La psychopathologie en graphologie [Psychopathology in graphology]. La Graphologie [Graphology]190: 110–117.
2.
BrowneS.RoeM.LaneA.GervinM.MorrisM.KinsellaA.O'CallaghanE. O. (1996) Quality of life in schizophrenia: Relationship to sociodemographic factors, symptomatology and tardive dyskinesia. Acta Psychiatrica Scandinavica94: 118–124.
3.
CaligiuriM. P.TeulingsH. L.DeanC. E.NiculescuA. B.LohrJ. (2009) Handwriting movement analysis for monitoring drug-induced motor side effects in schizophrenia patients treated with risperidone. Human Movement Science28(5): 633–642.
4.
CaligiuriM. P.TeulingsH. L.FiloteoV.SongD.LohrJ. B. (2006) Quantitative measurement of handwriting in the assessment of drug-induced parkinsonism. Human Movement Science25(4–5): 510–522.
5.
CoronA. M.StipE.DumontC.LecoursA. R. (2000) Writing impairment in schizophasia: Two case studies. Brain and Cognition43: 121–124.
6.
DeanD. J.OrrJ. M.NewberryR. E.MittalV. A. (2016) Motor behavior reflects reduced hemispheric asymmetry in the psychosis risk period. Schizophrenia Research170: 137–142.
7.
DochertyN. M.StraussM. E.DinzeoT. J.St-HilaireA. (2006) The cognitive origins of specific types of schizophrenic speech disturbances. American Journal of Psychiatry163: 2111–2118.
8.
DouglasD. B.SaraD. (1975) Handwriting in schizophrenia: Some clinical observations. Diseases of the Nervous System36(10): 561–567.
9.
DSM-V (2013) Diagnostic and statistical manual of mental disorders, 5th ed. Washington, DC: APA.
10.
FineJ. (2006) Language in psychiatry: A handbook of clinical practice, London, England: Equinox.
11.
FlycktL.SydowO.BjerkenstendtL.EdmanG.RydinE.WieselF. A. (1999) Neurological signs and psychomotor performance in patients with schizophrenia, their relatives and healthy controls. Psychiatry Research86: 113–129.
12.
FraserW.KingK. M.ThomasP.KendellR. E. (2001) Language in schizophrenia and its relationship to formal thought disorder. Psychological Medicine31: 197–205.
13.
GallucciR. M.PhillipsJ. G.BradshawJ. L.VaddadiK. S.PantelisC. (1997) Kinematic analysis of handwriting movements in schizophrenic patients. Biological Psychiatry41: 830–833.
14.
GawdaB. (2008) Graphical analysis of handwriting of prisoners diagnosed with antisocial personality. Perceptual and Motor Skills107: 862–872.
15.
GawdaB. (2013) Little evidence for the graphical markers of depression. Perceptual & Motor Skills117(1): 304–318.
16.
GawdaB. (2014) Lack of evidence for the assessment of personality traits using handwriting analysis. Polish Psychological Bulletin45(1): 73–79.
17.
GawdaB.SzepietowskaE. M. (2012) Znamiona lęku w piśmie ręcznym [Signs of anxiety in handwriting]. In: KegelZ. (ed.) Znaczenie aktualnych metod badań dokumentów w dowodzeniu sądowym [Importance of the current methods of document expertise the court proving process], Wroclaw, Poland: University of Wroclaw, pp. 65–77.
18.
GervinM.BarnesT. R. E. (2000) Assessment of drug-related movement disorders in schizophrenia. Advances in Psychiatric Treatment6: 332–343.
19.
GervinM.BrowneS.LaneA.ClarkeM.WaddingtonJ. L.LarkinC.O’CallaghanE. (1998) Spontaneous abnormal involuntary movements in first episode schizophrenia and schizophreniform disorder: Baseline rate in a sample from Irish catchment area population. American Journal of Psychiatry155: 1202–1206.
20.
GottschalkL. A.SerotaH. M.RomanK. G. (1949) Handwriting in Rheumatoid Arthritis. Psychosomatic Medicine11(6): 354–360.
21.
GuptaS.AndreasenN. C.ArndtS.FlaumM.SchultzS. K.HubbardW. C.SmithM. (1995) Neurological soft signs in neuroleptic-naive and neuroleptic-treatecl schizophrenic patients and in normal comparison subjects. American Journal of Psychiatry152: 191–196.
22.
HenkelV. (2004) Kinematical analysis of motor function in schizophrenic patients: A possibility to separate negative symptoms from extrapiramidal dysfunction induced by neuroleptics. Pharmacopsychiatry37: 110–118.
ICD-10 (1992) International statistical classification of diseases and related health problem, Geneva, Switzerland: WHO.
25.
ImpedovoS. (2014) More than twenty years of advancements on Frontiers in handwriting recognition. Pattern Recognition47: 916–928.
26.
KegelZ. (2002) Contemporary problems of proof from a document, Wroclaw, Poland: University of Wroclaw.
27.
KeinanD.Eilat-GreenbergS. (1993) Can stress be measured by handwriting analysis? The effectiveness of the analytic method. Applied Psychology42(2): 153–170.
28.
KesslerR. R.BerglundP. A.DemlerO.JinR.WaltersE. E. (2005) Lifetime prevalence and age-of-onset distributions of DSM-IV disorders in the National Comorbidity Survey replication (NCS-R). Archives of General Psychiatry62(6): 593–602.
29.
LarsenE. B.GerlachJ. (1996) Subjective experience of treatment, side-effects, mental state and quality of life in chronic schizophrenic out-patients treated with depot neuroleptics. Acta Psychiatrica Scandinavica93: 381–388.
30.
LemkeE. A.KirchnerJ. H. (1971) A multivariate study of handwriting, intelligence and personality correlates. Journal of Personality Assessment35(6): 584–592.
31.
LogaS.CurryS.LaderM. (1981) Interaction of chlorpromanine and nortriptyline in patients with schizophrenia. Clinical Pharmacokinetics6(6): 454–462.
32.
NaberD. (1995) A self-rating to measure subjective effects of neuroleptic drugs, relationships to objective psychopathology, quality of life, compliance and other clinical variables. International Clinical Psychopharmacology10(3): 133–138.
33.
PeeplesE. E.SearlsD. T.Wellingham-JonesP. (1995) Attention-deficit hyperactivity disorder: A longitudinal case study of handwriting characteristics. Perceptual and Motor Skills81: 1243–1252.
34.
PhillipsJ. G.NoutsisS.HughesC.RogersD. (2000) Effects of writing speed upon modes of signature simulation: A kinematic analysis. Journal of Forensic Document Examination13: 1–14.
35.
PtakR. (2006) The technical measurement of the handwriting parameters with use of the computer program. In: KegelZ. (ed.) The logical basis of the opinions in the forensic expertise and praxis, Wroclaw, Poland: University of Wroclaw, pp. 269–278.
36.
PulverM. (1953) Le symbolisme de l’écriture[The symbolism of handwriting], Paris, France: Stock.
37.
PutzhammerA.HeindlB.BrollK.PfeiffL.PerfahlM.HajakG. (2004) Spatial and temporal parameters of gait disturbances in schizophrenic patients. Schizophrenia Research69: 159–166.
PutzhammerA.PerfahlM.PfeiffL.HajakG. (2005) Correlation of subjective well-being in schizophrenic patients with gait parameters, expert-rated motor disturbances, and psychopathological status. Pharmacopsychiatry38: 132–138.
40.
RafaeliA.DroryA. (1988) Graphological assessments for personnel selection. Concerns and suggestions for research. Perceptual and Motor Skills66: 743–759.
41.
RiessM.BreuerF. J. (2002) The stereoscopic analysis of the intercross lines. In: KegelZ. (ed.) Problems of proof from a document expertise, Wroclaw, Poland: University of Wroclaw, pp. 699–701.
42.
SheehanD. V.LecrubierI.SheehanK. H.AmorimP.JanavsJ.WeillerE.DunbarG. C. (1998) The Mini-International Neuropsychiatric Interview (M.I.N.I.). The development and validation of a structured diagnostic psychiatric interview for DSM-IV and ICD-10. Journal of Clinical Psychiatry59: 22–33.
43.
SimpsonC.AngusJ. (1970) A rating scale for extrapyramidal side effects. Acta Psychiatrica Scandinavica212: 11–19.
44.
Stein-LewinsonTh. (1996) Dynamic disturbances in the handwriting of psychotics (part I). Graphology38: 41–50.
45.
TiggesP.MerglR.FrodlT.MeisenzahlE. M.GallinatJ.SchröterA.HegerlU. (2000) Digitized analysis of abnormal hand-motor performance in schizophrenic patients. Schizophrenia Researches45: 133–143.
46.
TuchaO.PaulG. M.EichhammerD.MecklingerL.KleinH. E.LangeK. W. (2003) Handwriting in schizophrenia. A kinematic analysis of handwriting movements. The International Journal of Forensic Document Examiners6(1): 1–3.
47.
VaniniC. (1986) La graphologie, manuel pratique [Graphology. Practical handbook], Paris, France: Vecchi.
48.
WidlaT. (2002) Wnioskowanie o niezdolności do testowania. In: KegelZ. (ed.) Problematyka dowodu z ekspertyzy dokumentów, Wrocław, Poland: Uniwersytet Wrocławski (About impossibility of concluding, In Problems of the prove in Forensic Expertise), pp. 22–30.
49.
WiserA. K.AndreasenN. C.O’LearyD. S.WatkinG. L.Boles PontoL. L.HichwaR. D. (1998) Dysfunctional cortico-cerebellar circuits cause ‘cognitive dysmetria’ in schizophrenia. Neuroreport9: 1895–1899.
