Study On The Handwriting Characteristics Of Chinese Signatures Of Patients With Dysgraphia

The handwriting studied in this paper is Chinese handwriting,and the age of the writer is between 60 and 100 years old.I believe that every writer will have the experience of wrong writing,missing writing and unable to remember how to write a certain word at once.For example,children often write wrong words.When we use more computers,some words that we are familiar with can’t remember how to write at once.Although these are only anecdotes,they actually exist in the writing activities.For the handwriting identification workers who take the research of writing activities as their own duty,they are not negligible.At present,in the practice of handwriting identification,the majority of cases are signature type handwriting identification.Because of its small number of characters,easy to be copied and other characteristics,signature type handwriting identification is the focus and difficulty of handwriting identification,which is concerned by the majority of handwriting identification workers and scholars.In the process of identification,we usually focus on the study of the writing habits contained in the writer’s writing activities and the handwriting characteristics reflected in the external forms of expression.The writing habit is a unique system of writing dynamic stereotype formed by the writer in the practice of writing activities.However,when we define the writing habit as a kind of writing dynamic stereotype,it is dominated and controlled by the writer.Even if it is camouflaged and imitated,it isalso under the control and control of the writer.However,in the process of writing activities,we sometimes inadvertently make mistakes.Even in serious cases,we can’t control our writing activities.In other words,we can’t express our writing habits smoothly.This kind of writing state is not dominated and controlled by the writer,which violates the original writing skills of the writer,or even changes by the writer’s will.In the medical field,this kind of writing state is considered to be caused by the functional damage of organs,which is called writing disorder.Writing disorder includes not only the agraphia caused by the high-level neurological dysfunction of the brain,but also the mechanical writing disorder caused by the damage of primary motor function.Writing barrier is a phenomenon that exists objectively in the writing activities of the writer.However,we have not fully understood and understood this writing state and the handwriting characteristics reflected in this writing state.However,there are no similar articles in the literature search at home and abroad.Occasionally,there are studies on handwriting of the elderly,Alzheimer’s disease,Parkinson’s disease and stroke patients,which are only case studies.From the current theory and practice of handwriting identification,the industry has not yet conducted in-depth and systematic research and collation on of Chinese signature handwriting of patients with writing disabilities,and the appraisers’ understanding of Chinese signature handwriting of patients with writing disabilities is also relatively broad and superficial.For example,the handwriting of dysgraphia patients is characterized by large font,loose structure,curving and shaking of the pen,pause in the middle,dragging trace of the starting and closing pen,and unsystematic understanding of repetitive writing,mirror writing and lowercase syndrome.In the author’s opinion,although these understandings have some guiding significance,they are just the piling up of handwriting features,not a systematic and comprehensive summary,which will lead to a general understanding and have great limitations on practical guidance.In view of this,the research on the formation mechanism of writing activities and the handwriting characteristics reflected by the Chinese signature of the patients with writing disorders can effectively help the appraisers to understand the handwritingcharacteristics of this kind of Chinese signature,which is more conducive to the development of identification work.From the perspective of dysgraphia,the author clarifies the concept,formation mechanism and scientific basis of identification of the handwriting of dysgraphia patients,analyzes the relationship between writing habits and writing control ability,shows the different reflection of the handwriting characteristics of Chinese signature handwriting of dysgraphia patients under the change of writing control ability,and systematically analyzes the dysgraphia under the change of writing control ability The characteristics of the patients’ signature,the rules of the changes of the characteristics of the handwriting and the key points of the signature identification technology.In the author’s investigation and research,it is found that writing disorder is mainly caused by the impairment of brain function and motor nerve function,which is more common in the elderly and accompanied by diseases such as Alzheimer’s disease,Parkinson’s disease and stroke.By analyzing the signatures of more than 1000 60-106 year olds,the author found that 104 of them were obviously suffering from dysgraphia,and through the analysis of the changes of handwriting morphology within three years,it was found that the typical handwriting features of dysgraphia patients were dysgraphia,misspelling signature,dyskinesia,inert writing,repetitive writing There are eight kinds of typical characteristics,such as painting characteristics,mirror writing characteristics,visual space write out characteristics and write out characteristics.Among them,the features of dysgraphia,misspelling signature and dysgraphia can be further subdivided.The dysgraphia features are divided into partial completion feature,partial substitution feature,stroke addition feature,stroke omission feature and innovative character feature.The features of misspelling signature include near substitution feature,homophone or near substitution feature,near substitution feature,antisense substitution feature and The main characteristics of dyskinetic agraphia are font enlargement,loose structure,maladjusted proportion of strokes(structure),slow moving of strokes,bending and shaking,dragging of starting and closing pens,abnormal amplitude of individual strokes,lowercase syndrome and maladjustment of strokes.On this basis,the author collected more than 100 handwriting forms ofdysgraphia patients for three years,and displayed them in the form of atlas,which provided intuitive and practical guidance for the handwriting identification practice of dysgraphia patients.At the same time,on the basis of the existing handwriting identification technical specifications,the author combs and summarizes the key points of handwriting characteristics of some patients with writing disorders to determine the physical condition of the writer,and puts forward that when there is a reasonable doubt about the handwriting characteristics of the specimen signature in the identification process,it should be paid enough attention to,carefully inquire and understand the physical condition of the writer during the formation of the specimen,and make a comparative analysis Whether the physical condition at the time of signature is consistent with the handwriting features reflected by the writing disorder,so as to confirm or exclude some differences that may affect or affect the judgment of appraisal opinions.At the same time,the author also clearly realizes that there are inevitably omissions in the article.It is also necessary to test whether the extracted handwriting characteristics of dysgraphia patients are suitable for handwriting identification practice and whether they are universal.The subject of handwriting identification is based on scientific demonstration,but there is still a long way to go.Many handwriting identification workers and scholars are also trying to explore this way,hoping to explain the scientificity of handwriting identification through scientific quantitative methods.The author hopes to attract more scholars and appraisers to join in the study of handwriting identification of patients with dysgraphia,so that the majority of identification workers have a better understanding of the handwriting of patients with dysgraphia.