RESUMEN
PURPOSE: Personality and its disorders have been the subject of many studies in philosophy, psychology or medicine. Current nosology gives preference to categorical classifications, but a dimensional approach may also be considered. Supported by Cloninger's psychobiological model, it refers to concepts of temperament (novelty seeking, reward dependence, harm avoidance and persistence) and character dimensions (self-directedness, cooperativeness and self-transcendence). Categorical and dimensional approaches do not appear antinomic, and the PerCaDim study tries to verify the hypothesis of correlations existing between them. SUBJECTS AND METHODS: One hundred and eleven patients completed two personality inventories. The dimensional approach was assessed using the TCI-125 (short version of the Temperament and Character Inventory) (Cloninger et al., 1993 [9]), which includes four dimensions of temperament and three dimensions of character. The categorical approach was assessed using Vragenlijst Kenmerken voor van de Persoonlijkheid (VKP) (Duijsens et al., 1993 [15,16]), which defines personality disorders according to DSM III-R (APA, 1987 [1]). RESULTS: The PerCaDim study reveals significant relationships between the dimensions of temperament and character and personality disorders. For dimensions of temperament: novelty seeking is correlated negatively with schizoid personality and positively with antisocial, borderline, histrionic, narcissistic and sadistic personalities. Ten out of 13 personalities from DSM III-R are positively correlated with harm avoidance. Cluster A and obsessive-compulsive personality disorders have negative correlations with reward dependence, whereas five pathological personalities have positive correlations with persistence. For dimensions of character: all personality disorders are negatively correlated with self-directedness. Cooperativeness is negatively correlated with six personality disorders. Among the dimensions of character, only self-transcendence has positive correlations with personality disorders. DISCUSSION: The PerCaDim study highlights various relationships between dimensional and categorical approaches of personality. It shows negative correlations between reward dependence and cluster A personality disorders, positive correlations between novelty seeking and cluster B personality disorders and between harm avoidance and cluster C personality disorders. Self-directedness and cooperativeness character's dimensions seem to reflect the subject's adaptation, because negative correlations were found with all personality disorders. It may be surprising that correlations appear positive between self-transcendence dimension and 12 personality disorders. This result is not striking for "psychotic" personalities, but may be questionable for other personalities. CONCLUSION: These results confirm previous findings that Cloninger's dimensions can objectify personality disorders. Few dimensions of the Temperament and Character Inventory can be considered as vulnerability factors. The use of the Temperament and Character Inventory will most certainly be of good help in the future to detect or prevent a personality disorder in some subjects at risk.
Asunto(s)
Carácter , Trastornos de la Personalidad/clasificación , Trastornos de la Personalidad/diagnóstico , Temperamento , Adulto , Femenino , Francia , Humanos , Masculino , Persona de Mediana Edad , Trastornos de la Personalidad/psicología , Inventario de Personalidad/estadística & datos numéricos , Psicometría , Estadística como AsuntoRESUMEN
BACKGROUND: Estimates suggest that there are more than 700,000 adult caregivers of persons with dementia in this country, a large number of whom experience some form of sleep disturbance during the course of their caregiving career. Health care professionals are in the best position to detect and address this significant public health problem. OBJECTIVES: Prospective study of sleep with the main caregivers providing home-care for demented patients. METHODS: This study was performed on elderly persons living at home. Two populations were concerned. The control group concerned 86 old persons living in the area of Limoges (France) and was contacted to join by the senior clubs of this city. The other group concerned caregivers to persons with dementia, living with them at home, and the assessments were done during the patient assessment. Each group had a cognitive evaluation by a Folstein's test and answered a questionnaire to describe their possible sleep difficulties. RESULTS: Sixty-eight caregivers face sleep disturbance versus 25 non-caregiver controls. Caregiver sleep-problems are often linked to sleep disturbances in the care-recipient. Night-time awakenings by persons with dementia are a common precipitating cause of sleep/wake disturbances in vulnerable caregivers. Caregivers awake 2.3 times during the night versus 1.2 for control persons. Caregivers awake earlier (around 6:20) than non-caregivers (around 7:05) and their sleep time is shorter by one hour. Caregivers are more often depressed (28 in 98 versus 13 in 86) and have more often high blood pressure (56 in 98 versus 24 in 86). They received more medications and used more often self-medication. DISCUSSION: Three major contributors to caregiver sleep-disturbance are pointed in this paper: the apparition of caregiver disrupted sleep routines, caregiver burden and depression and the caregiver's physical health status. Successful treatment of a caregiver's sleep disturbance requires careful consideration of each of these contributors. Non-pharmacological options are generally recommended as a first line of treatment for managing sleep disturbances in older adults, including caregivers of persons with dementia.