A note on the visual performance of a subject with unilateral functional blindness.
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This review examines the literature on psychological reactions, often referred to as 'compensation neurosis', which occur after an accident and which are thought to be produced or maintained by a compensation claim. Theories and research are examined. The area is complicated and research so far is limited in scope and design. Few accident cases involve compensation claims and the incidence of psychological difficulties across the whole range of cases is unknown. Researchers have considered a number of background factors--severity of injury, pre-existing neurotic traits, social class, sex and age--but there has been little investigation of attitudinal, family, social and employment factors or of progress of the condition and follow-up after settlement. The review identifies a major research need for more adequate screening and sampling of cases and for more systematic investigation of personal and family factors.
In an attempt to develop an instrument to differentiate conscious exaggerators of symptoms from normals and neurotics, the Illness Behaviour Questionnaire (IBQ) was administered to 164 members of a public utility, half of whom were instructed to fill it out as conscious exaggerators, and 82 individuals who presented at a hospital pain clinic with pain considered to be neurotically determined. Four IBQ subscales differentiated the three groups, and a new 21-item scale (CE-scale) was developed which achieved wide separation between the conscious exaggerators, neurotics and normals. It is suggested that the CE-scale may have considerable utility in assessing conscious exaggerators and compensation neurotics, and that further studies should assess its predictive value.
Work-related injuries are invariably related to protracted disability; however, confusion abounds concerning the genesis of this phenomenon. The present study examined the linkage between psychological disturbance and protracted disability in patients with work-related and non work-related injuries. A comparison was made between 1373 patients injured at work and 417 patients injured away from work on the variables of psychological disturbance and disability time. High but comparable levels of psychological disturbance were identified for both groups. People injured on the job were disabled longer, independent of psychological status.
Objective evaluation of simulation in low back pain is currently not possible. A new simulation scale based on subject response to 103 pain words has shown promise in discriminating patients with low back pain from those simulating low back pain. Administration of this scale to 1679 individuals who were injured at work produced a 10.4% sample with scores in the simulation range. This subsample projected more intense pain and were disabled longer. These findings were replicated in a second study in which treating physicians rated the degree of physical pathology and symptom exaggeration blind to patient classification by the Low Back Pain Simulation Scale. Medical assessment indicated less organic pathology and greater symptom exaggeration among patients classified as simulators providing a measure of support for the validity of the simulation scale.
Although the term 'compensation neurosis' has been frequently used to describe personal injury litigants, its clinical validity--and the assumptions about individuals described by this label--have not been critically examined. This article reviews the concept of 'compensation neurosis' and follow-up studies of claimants for compensation following the finalisation of their legal proceedings. A follow-up study of 760 litigants found that, of the 264 subjects who were not working at the time of conclusion of litigation and who could be traced, 198 (75%) were not working after an average of 23 months following the finalization of their cases.
Some neuropsychological tests devised to detect exaggeration and simulation of memory disorder are reviewed with reference to models of memory and our current knowledge of the behaviour of amnesic patients. These tests are based on the assumption that naive simulators or exaggerators do not know either that amnesic patients can perform them normally, or near normally, or that subjects can only fail them by deliberate suppression of the correct response. It is concluded that several such tests show promise and are worthy of further development.
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The medical community must recognize that support of claims for Incapacity Benefit and related commercial schemes places the patient in a small and special sub-population of clinical practice which may require specialist investigation, treatment, and documentation. Determination of functional capacity and of disability requires knowledge either not available or unfamiliar to most physicians with caring and therapeutic roles, especially of legal or contractual provisions and occupational data. However, it is not necessary for them to determine disability and they should not be asked to do so. The new, medical assessment procedures for Incapacity Benefit in the UK do not require this, and the largest provider of related commercial schemes (Long Term Disability; Permanent Health Insurance) has already eliminated this requirement from its application process. When such application is anticipated or requested, the medical record should be prepared and appropriate consultation obtained. Subjective issues should be identified and addressed. Comprehensive psychiatric evaluation, especially in subjective impairment, is critical in chronic incapacity. The estimation of functional capacities in the absence of objective data is particularly troublesome, but, clinicians can provide the Disability Medical Analyst with appropriate medical documentation.
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Sensory threshold measurements are criticized as subjective and therefore not to be relied upon in clinical diagnostic practice, particularly when deliberate deception by the patient is suspected. In an attempt to devise a method which permits dependable sensory threshold interpretation, individual variability of thresholds was examined in normal and neuropathic subjects. Normals were also instructed to feign sensory impairment resulting from hypothetical injury. For each subject, a number of threshold readings were averaged, yielding individual means and variances. Feigning normal subjects evidenced a larger variance compared to trustworthy normal and neuropathic subjects. Thus, alertness to variance reinforces the psychophysical analysis: small variance values suggest trustworthy normal or pathological results, whereas large variance calls the interpreter's attention to feigned results or inattentive test performance.
A case of pure retrograde amnesia following mild head injury is reported. Neuropsychological, psychodynamic and statistical approaches are employed in an attempt to disentangle the clinical picture presented by the patient. Focal retrograde amnesia, psychogenic retrograde amnesia and simulated amnesia are all taken into account. From a public events questionnaire and an inquiry about famous people, consistency analyses showed that the patient was able implicitly to use information she denied having, but at the same time, made us lower the probability of a simulated amnesia. Moreover, psychodynamic analysis showed that the patient's personality structure was compatible with hysterical patterns and we suggest that the patient's memory defect may be related to her personality. It seems less likely, though still possible, that the case may be explained in terms of deliberate simulation. In this case we conclude that the classification along the conscious/unconscious dimension seems more informative than the contrast between psychogenic and organic genesis.