Abstract: Quality of life was compared for lifetime victimized (n = 353) and nonvictimized men (n = 167) for demographic and quality of life variables by a cross-sectional design. The univariate analyses showed that victims compared to nonvictims had a lower quality of life, were younger, more often had upper secondary school education, and were more often blue-collar/low white-collar workers, on student allowances, on unemployment, financially strained, and smokers. The regressions revealed that unemployment, financial strain, smoking, depression, and home/public abuse were associated with reduced quality of life among victimized men. Being a blue-collar/low/intermediate white-collar worker and social support were related to increased quality of life. This study may have provided new insights into the experiences of quality of life of victimized men.

Abstract: This study examined the occurrence of low/high burnout among women and the demographic/socio-economic, work, life-style, and health "correlates" of high burnout. The sample consisted of 6.000 randomly selected women from the general population, of which 3.591 participated. The design was cross-sectional. The univariate analyses showed that about 21% of the women had high burnout, and compared to those with low burnout, they were more often younger, divorced, blue-collar workers, lower educated, foreigners, on unemployment/retirement/sick-leave, financially strained, used more medication and cigarettes, reported higher work demands and lower control/social support at work, more somatic problems (e.g. pain) and depression. The regression analysis showed that only age, sick-leave, financial strain, medication, work demands, depression and somatic ailments were independently associated with high burnout. Thus, women with high burnout were apparently faring poorly financially, emotionally and physically. Considering our findings, interventions to alleviate their problems may be necessary. We may have provided new insights into women's burnout experiences, but longitudinal studies are warranted to firmly identify "determinants" of burnout.

Abstract: Previous studies on post-traumatic stress disorder (PTSD) investigated a variety of treatments and included mostly patients victims of sexual and combat assault. This study aimed to determine the short-term efficacy of eye movement desensitization and reprocessing (EMDR) in occupation-based PTSD. Employees of the public transportation system in Stockholm, who had been experiencing a person-under-train accident or had been assaulted at work were recruited. Subjects with trauma exposure since more than 3 months but less than 6 years were included. Twenty-four subjects who fulfilled the DSM-IV criteria for PTSD were randomized to either EMDR therapy (n=13) or waiting list (WL, n=11). They were assessed pre-treatment and shortly after completion of treatment or WL period. The pre-defined primary outcome variable was full PTSD diagnosis. Secondary outcome variables were the results of various psychometric scales. Twelve participants began and completed five sessions of EMDR and nine completed the WL. After therapy, eight subjects in the EMDR group (67%) and one (11%) in WL did not fulfil the criteria for PTSD diagnosis (difference, P=0.02). Among the secondary outcome variables, there were significant differences post-treatment between the groups EMDR/WL in Global Assessment of Function (GAF) score and Hamilton Depression (HAM-D) score. This study indicates that EMDR has a short-term effect on PTSD in public transportation workers exposed to occupational traumatic events. Such intensive and brief therapy might be further validated in larger samples of exposed workers with longer periods of follow-up.

Abstract: We examined pain prevalence (general/body sites) and its characteristics/consequences among a randomised sample of women from the general population between 18 and 64 years (n=3,616). We also scrutinised associations between pain and various factors (e.g. socio-economic) by means of multivariate logistic/linear regression analyses. The women completed a questionnaire assessing various areas (e.g. pain). The design was cross-sectional and data were collected during 8 consecutive weeks. Sixty-three per cent of women reported pain during the last 3 months, of which 65% during more than 3 months. The multivariate analyses revealed associations between various socio-economic factors (e.g. financial strain) and pain in general/all studied body sites. In addition, psychosocial work conditions (i.e. work strain and social support) were significantly related to pain. Moreover, the multivariate analyses conducted among women with pain indicated relationships between socio-economic/psychosocial work conditions, and pain characteristics (e.g. intensity) and consequences (i.e. disability). A large number of women from the general population suffer from pain, in particularly prolonged pain. Women in a deprived socio-economic situation not only run a higher pain risk, but also experience their pain as more severe/disabling than their more privileged counterparts. Improvements of, for example, the socio-economic status among women living in deprived social and material circumstances, along with improved working environment may be crucial to reduce women's pain problems.

Abstract: OBJECTIVE: The study objectives were to assess long-term psychosocial morbidity and its determinants among parents of children with congenital heart disease (PCCHD), and to compare mothers with fathers on psychosocial variables. METHOD: The study design was longitudinal. Data comprising PCCHD (n = 632, 58% were women) were collected on two occasions 1 year apart. RESULTS: Many PCCHD reported psychosocial problems manifested in depression (18%), anxiety (16%-18%), somatization (31%-38%), and hopelessness (16%) during both measurement points. In addition, 7% to 22% reported psychosocial problems persisting over a 1-year period. Consistently over time, mothers reported more severe symptoms of depression, anxiety, somatization, and hopelessness than fathers. Children's clinical severity did not significantly explain parent's psychosocial morbidity over time. Instead, parental caregiving burden, dissatisfaction with care, social isolation, and financial instability were associated with an increased risk of long-standing psychosocial morbidity. CONCLUSIONS: An important proportion of PCCHD are at risk of long-standing psychosocial morbidity, suggesting that psychosocial intervention may be beneficial. Feasible interventions are discussed.

Abstract: OBJECTIVE: Psychological trauma leads to posttraumatic stress disorder (PTSD) in susceptible subjects. The aim of this study was to investigate the differences in regional cerebral blood flow (rCBF) between two groups of subjects exposed to different types of traumatic stressor either developing or not developing PTSD. METHODS: Twenty subjects developing (S) and 27 not developing (NS) PTSD after being exposed to either earlier person-under-the-train accident (NA) or being assaulted in the underground environment (A) were included in the study. 99mTc-HMPAO SPECT was performed and the uptake in 29 regions of the brain (VOIs), bilaterally, was assessed. rCBF distribution was compared, using analysis of variance (ANOVA), between groups (S/NS) and type (A/NA) during a situation involving an auditory evoked re-experiencing of the traumatic event. Discriminant analysis was applied to test the concordance between clinical diagnosis and SPECT findings. RESULTS: In the general analyses significant differences were found between groups and types and there was a significant hemisphere x type interaction. S showed higher CBF than NS and so did A as compared to NA, particularly in the right hemisphere. Discriminant analysis correctly classified 66% of cases (p < 0001) in testing S/NS and 72% (p < 0001) in testing NA/A. CONCLUSIONS: Under recall of their traumatic experience we found higher relative CBF distribution values in S as compared to NS. CBF was higher in the right hemisphere and particularly in assaulted subjects. These findings underscore the role upon trauma recall of both the right hemisphere and the nature of the stressing event.

Abstract: We examined differences in demographic/financial characteristics, burnout, job demands/control/strain and symptoms of depression as measured by GHQ among primary care patients with (n=838) and without pain (n=135). In addition, we examined factors associated with the presence of pain by means of logistic regression analyses among all participants, and inter-relations between demographic/financial/pain/health variables, symptoms of depression, burnout, and disability by means of multivariate regression analyses among pain patients. The patients completed a questionnaire about areas such as job strain and burnout. The design was cross-sectional and data were collected during 15 consecutive days. The univariate analyses showed that pain patients, compared with patients without pain, were more often females, older, divorced, foreign-born, had been more often on sick-leave, were more preoccupied with how to make ends meet and had greater difficulties in raising a reasonable sum of money within a specific period of time. In addition, they had greater levels of depression symptoms, burnout, and job strain. However, the multivariate analyses showed that symptoms of depression and burnout were more associated with such variables as sick-leave and divorce than by pain parameters. The logistic regression revealed that the presence of pain was associated with female gender, sick-leave, and high levels of job strain and mean total burnout. Finally, pain patients had a severe clinical situation in terms of, for example, constant, intense, and prolonged pain, and experienced a high degree of disability due to pain. We corroborated previous findings and may have provided new insights into the experiences of pain patients that may be of importance when considering intervention. Although we pointed to some important factors associated with pain, symptoms of depression and burnout, much of their variation remains to be explained. Thus, further research appears necessary, not least concerning the role of burnout as an antecedent to pain.

Abstract: AIM: We compared parents of children with congenital heart disease (PCCHD, n=1092) with parents of children with other diseases (PCOD, n=112) regarding satisfaction with their children's care (SCC). We also examined the association between parental/patient characteristics and SCC. METHOD: The parents completed a questionnaire about such areas as satisfaction with care, children's health status, and financial situation. The design was cross-sectional and data were gathered over 20 consecutive days. RESULTS: The univariate and multivariate analyses showed that PCCHD were more satisfied with their children's medical care and waiting period for treatment of their ill children than PCOD, although the difference was only modest. Furthermore, mothers were less satisfied with staff attitudes than fathers, with the lowest satisfaction among mothers of children with CHD. However, the multivariate analysis indicated that less satisfaction with care was more associated with decreasing child age, unemployment, financial burden of disease, social isolation and psychological distress than with children's diseases, their severity and parental gender. CONCLUSION: We corroborated some previous findings and may have provided new insights regarding determinants of SCC among parents. Interventions to improve SCC may need to address issues of parental psychological distress, socialization, and financial burden of illness. Possible ways of achieving this are discussed. Finally, research in a longitudinal format is needed to further scrutinize determinants of parental SCC.

Abstract: OBJECTIVES: To analyse differences in demographic/financial/pain/health variables, disability, General Health Questionnaire (GHQ; i.e., depression symptoms) and coping among 949 primary care pain patients in various ages (20-65+ years) and to identify predictors of disability and coping. METHOD: Patients completed scales about various areas (e.g., coping). The design was cross-sectional and data were collected during 15 consecutive days at 20 randomly selected primary care centres in Stockholm. RESULTS: Univariate analyses showed that older patients (a) were more often divorced, blue-collar workers, less educated and had greater difficulties with living expenses, (b) had pain of longer duration, more frequently and of more complexity, and felt more disabled, (c) consumed more painkillers, analgesics, sedatives and other medications, had received more pain treatments and had more health problems and (d) more often used passive coping for pain. Younger patients (a) had more severe pain, were financially strained and were more often unemployed and (b) more often used active coping for pain. There were no significant differences concerning GHQ scores. Multivariate regression analyses showed that active coping was associated with younger age. High disability and passive coping were associated with older age. CONCLUSION: We corroborated previous findings and may provide new insights into the experiences of older and younger pain patients. Further research concerning, for example, the elderly at risk of developing pain problems is needed.

Abstract: We compared quality of life among parents of children with congenital heart disease (PCCHD, n = 1092), parents of children with other diseases (PCOD, n = 112) and parents of healthy children (PHC, n = 293). We also identified determinants of quality of life among the parents. The parents completed a questionnaire about such areas as quality of life and financial situation. The design was cross-sectional and data were collected during 20 consecutive days. The univariate analyses showed that PCCHD tended to report lower quality of life than PHC. Mothers reported lower quality of life than fathers, with the lowest levels among mothers of children with CHD. The multivariate analyses revealed however that variables such as distress, hopelessness and financial situation were more important in explaining the reduced quality of life than parental gender and the presence/severity of the children's heart diseases. We corroborated previous findings and may have provided new insights into the quality of life experiences of parents of children with CHD that may be important when considering interventions to improve their situation.

Abstract: Using questionnaires, we analyzed associations between different pain variables (e.g., pain intensity) and age (20-65+ years) among 949 primary pain patients. Older patients (a) were more often divorced, were blue-collar workers, were less educated, and had greater difficulties with living expenses; (b) had pain of longer duration, more frequently and of more complexity, and felt more disabled; (c) consumed more painkillers, analgesics, sedatives, and other medications, and had received more pain treatments; and (d) had more health problems. Younger patients had more severe pain, were financially strained, and were more often unemployed. A multivariate regression analysis showed that high disability was more determined by older than young age. However, other factors (e.g., pain complexity) were also important. Thus, older and younger patients experienced their pain differently

Abstract: OBJECTIVE: We examined differences in distress (i.e., depression, anxiety, and somatisation) and hopelessness (e.g., suicide ideation) among parents of congenital heart disease (CHD) children (PCCHD, n=1092), parents of children with other diseases (PCOD, n=112), and parents of healthy children (PHC, n=293). In addition, we determined the proportion of parents in each group whose scores in distress and hopelessness, respectively, exceeded norms for psychiatric outpatients (POPN) and depressed people, and identified determinants of distress and hopelessness among all parents, and the PCCHD. METHOD: The parents completed a questionnaire about such areas as distress and hopelessness. The design was cross-sectional and data were collected during 20 consecutive days. RESULTS: PCCHD were generally at higher risk of distress and hopelessness. A significant number of parents, in particular PCCHD, reported levels of distress and hopelessness within/above POPN and depressed people, respectively. Mothers within all parent groups had higher levels of distress and hopelessness than fathers, with the highest levels among mothers of children with CHD compared to mothers in the other groups. Fathers of children with CHD were doing worse than fathers belonging to the other groups. There were no differences between PCOD and PHC. Variables such as employment status and financial situation explained more of the variation in distress and hopelessness among parents than the diseases of their children. CONCLUSION: We corroborated previous findings and provide new insights into the experiences of PCCHD that may be of importance when considering intervention. Further research concerning the parents, in particular PCCHD, at risk of developing psychosocial problems is needed.

Abstract: Recent studies suggest that violence in health care environments, especially mental health care, appears to be increasing. Although there is a lack of cross-cultural studies to prove it, this increase in violence would seem to be an international phenomenon. The present study sought to compare the extent and nature of violence encountered by mental health nurses in Sweden and England. Systematic studies of violence have previously been carried out independently in both countries but this was the first attempt to compare levels of violence. Clearly defined study protocols were put in place, an operational definition of 'violence' adhered to, and random samples recruited. A specially designed questionnaire was sent to every subject (Swedish nurses n=720; English nurses n=296) enquiring about the extent of nurses' exposure to violence, the nature and severity of the violence experienced, and the effect of violence on self-esteem and job satisfaction. Significant differences were found with English nurses experiencing more violence than their Swedish counterparts. Yet support for English nurses appeared to be less good than for Swedish nurses. Reasons for the differences are discussed along with possible measures to minimise the frequency of violence against nurses and the negative effects on their work.

Abstract: OBJECTIVE: The study investigated the associations between self-rated financial strain and overall diurnal salivary cortisol levels, as well as secretory patterns among long-term unemployed individuals. METHODS: Psychosocial and life-style variables were assessed by means of questionnaires among 85 participants (mean age 42+/-9 years; 56% females). Salivary cortisol was sampled on four occasions during a 24-hour period and data was analysed separately for men and women. RESULTS: Among females, high financial strain was related to higher overall cortisol levels, and to elevated levels in the evening. These associations did not reach significance among men. Multivariate analyses showed that evening levels of cortisol were positively associated with financial strain, but largely unrelated to life-style variables and psychological distress. CONCLUSIONS: The results suggest that high financial strain influences the diurnal cortisol secretion of unemployed individuals in terms of elevated cortisol levels in the evening. The mediating mechanisms are in need of further investigation.

Abstract: This comparative study of the perceptions of mental health nurses and psychiatrists about aspects of their work environment was undertaken in the West Midlands in England. The aim of the study was to ascertain the extent to which the environment in which mental health professionals' work impacts on their own mental and physical well-being. Seventy-four psychiatrists and 301 mental health nurses responded to a postal questionnaire. Analysis of data indicated that significant differences exist between nurses and psychiatrists in their working conditions, their physical working environment, their sources of support with a work-related problem, and the effects of their work on their own mental and physical health. The main recommendation derived from this study was to improve communication between mental health professionals and their managers by giving more structured feedback and guidance about one's work performance. This may help to alleviate the mental strain many mental health professionals experience in their work.

Abstract: Violence against mental health service personnel is a serious workplace problem and one that appears to be increasing. This study aimed to ascertain the extent and nature of violence against mental health nurses and psychiatrists, and to identify what support, if any, they received following exposure to violence. Mental health staff working within five West Midlands Trusts in the United Kingdom were surveyed using a postal questionnaire to investigate the extent and nature of violence they encountered in their daily work. There was an overall response rate of 47%, which included a response rate for psychiatrists of 60% (n=74) and for mental health nurses of 45% (n=301). Though both groups experienced violence at work, nurses were found: to have been exposed to violence significantly more during their career; to have been a victim of violence within the previous 12 months of the survey; and to have suffered a violent incident involving physical contact. Whilst a higher proportion of nurses than psychiatrists received some support following a violent incident, a large proportion of both groups did not receive any, although most felt in need of it. The implications of this study for training and management are discussed.

Abstract: BACKGROUND: Mental health personnel are at high risk for mental illness, burnout and suicide. Previous studies of this group of professionals have indicated the importance of organisational factors in explaining burnout, or exhaustion, and work satisfaction. This study looks more systematically at the contribution of organisational and individual factors to work-related exhaustion and to professional fulfillment, an expanded version of job satisfaction. METHODS: A cross-sectional study of 1, 051 psychiatrists and mental health nurses in the city of Stockholm was carried out by postal questionnaire with a previously validated instrument. Multiple and logistic regressions were used to identify predictors of exhaustion and professional fulfillment. RESULTS: Organisational characteristics were found to be more important than individual characteristics in predicting exhaustion and professional fulfillment in mental health professionals. CONCLUSIONS: The results indicate that the psychosocial work environment and well-being of mental health professionals can be improved by concentrating on organisational factors such as efficiency, personal development and goal quality.

Abstract: We studied the associations between psychosocial variables and sick-leave among patients with musculoskeletal pain. Patients (n = 586) seeking care to relieve their pain at health care and physiotherapy centres, completed a questionnaire about such variables as clinical characteristics (e.g. pain intensity), psychological well-being (e.g. burnout, depression) and coping strategies. The results show that the patients who had been on sick-leave for >30 days (n = 217), were significantly more often divorced, immigrants, blue-collar workers and less educated than the rest of the sample. Compared with the rest of the patients, they rated their pain as significantly more severe, frequent, complex and functionally impairing. They reported using more pain medication and tranquillizers, and having undergone more somatic treatments. These patients also showed higher scores on job strain, more symptoms of burnout, anxiety/depression and posttraumatic stress reactions, and poorer coping capacity. Logistic regression analyses revealed that an index related to perceived disability was a major predictor of sick-leave within the group. After controlling for possible confounders, multivariate regression analyses showed that the strongest predictors of the disability index were symptoms of burnout and posttraumatic stress reactions. The results confirm that emotional distress, coping style and perceived disability are associated with sick-leave, after controlling for pain parameters and sociodemographic variables. The high levels of emotional distress and the poor coping capacity reported by the patients with a long history of absence due to illness suggest that cognitive behavioural interventions ought to be integrated in the treatment of musculoskeletal pain.

Abstract: Although health care systems around the world are undergoing rapid changes, there is an absence of comparative studies of how these changes affect nurses' well-being and work life. The purpose of this study was (i) to identify and describe possible differences between the psycho-social work environments of English and Swedish mental health nurses, and (ii) to attempt to explain these differences. 1016 psychiatric nurses from Stockholm (Sweden) and Birmingham (England) responded to a postal questionnaire on their psycho-social work environment and feelings of professional fulfillment, mental energy and work-related exhaustion. The study was given ethical clearance in Stockholm and Birmingham. Results indicated that while the English nurses rated their organizational well-being more favourably, Swedish psychiatric nurses reported greater individual well-being than their counterparts. Multiple regression analyses indicated that self-esteem was important for explaining mental energy and work-related exhaustion, but less so for explaining professional fulfillment, which was predicted primarily by organizational factors. When controlling for self-esteem, which was higher amongst the Swedish nurses, the differences in professional fulfillment and mental health were no longer significant. Reasons for the differences in self-esteem and experiences of the workplace are discussed. Low response rate may have contributed to a selection bias.

Abstract: We explored differences regarding several psychosocial constructs (e.g. coping with pain) between immigrant (n = 140) and Swedish (n = 446) patients seeking treatment for pain at health and physiotherapy centres. A cross-sectional study design was used. The findings showed that, compared with Swedes, immigrants more often relied on benefits for their support and were more concerned with their financial situation. They also had longer periods of sick-leave. In addition, immigrants felt more disabled, reported more job strain and relied more on passive coping strategies for pain. Finally, they were more emotionally distressed, as they showed more symptoms of burnout, anxiety, depression and post-traumatic stress reactions, and lower self-confidence. Multivariate analyses performed separately for immigrant and Swedish patients showed differential patterns of associations between sociodemographic variables, financial strain, emotional distress, perceived disability, passive coping and job strain. We conclude that immigrant patients live under more strained psychosocial conditions and experience a deeper impact of pain than do their Swedish counterparts.

Abstract: BACKGROUND: Few studies have attempted to analyse the organisational aspects of the workplace that may affect the well-being of psychiatrists and even fewer have offered insights into what a positive workplace might look like. This study provides an outline of such a workplace, with reference to individual and organisational factors. In addition, a comparison is made between two European cities to check for cultural differences. METHOD: Three hundred and eighty psychiatrists from Stockholm and Birmingham responded to a previously tested questionnaire on their work environment. RESULTS: Predictors of a positive workplace for psychiatrists were: high self-esteem, satisfactory support with work-related problems, lower perceived workload, positive view of leadership, low work-related exhaustion and having a sense of participation in the organisation. There were few cultural differences. CONCLUSIONS: Measures should be taken to improve leadership skills for managers, to offer more support for work-related problems, and to allow psychiatrists to participate more in the organisation.

Abstract: The role of conscious awareness in human Pavlovian conditioning was examined in 2 experiments using masked fear-relevant (snakes and spiders; Experiments 1 and 2) and fear-irrelevant (flowers and mushrooms; Experiment 1) pictures as conditioned stimuli, a mild electric shock as the unconditioned stimulus, and skin conductance responses as the primary dependent variable. The conditioned stimuli were presented briefly (30 ms) and were effectively masked by an immediately following masking stimulus. Experiment 1 demonstrated nonconscious conditioning to fear-relevant but not to fear-irrelevant stimuli. Even though the participants could not recognize the stimuli in Experiment 2, they differentiated between masked stimuli predicting and not predicting shocks in expectancy ratings. However, expectancy ratings were not related to the conditioned autonomic response.

Abstract: We tested the hypothesis that an unconscious preattentive perceptual analysis of phobic stimuli is sufficient to elicit human fear responses. Selected snake- and spider-fearful Ss, as well as normal controls, were exposed to pictures of snakes, spiders, flowers, and mushrooms. A separate forced-choice recognition experiment established backward masking conditions that effectively precluded recognition of experimental stimuli both for fearful and nonfearful Ss. In the main experiment, these conditions were used to compare skin conductance responses (SCRs) to masked and nonmasked phobic and control pictures among fearful and nonfearful Ss. In support of the hypotheses, snake- and spider-fearful Ss showed elevated SCRs to snake and spider pictures as compared with neutral pictures and with responses of the nonfearful Ss under both masking conditions. Ratings of valence, arousal, and dominance indicated that the fearful Ss felt more negative, more aroused, and less dominant in relation to both masked and nonmasked phobic stimuli.

Abstract: We hypothesized that autonomic responses conditioned to fear-relevant stimuli, in contrast to responses conditioned to neutral stimuli, can be elicited after only an automatic, non-conscious analysis of the stimulus. Consequently, they may be expected to be insensitive to verbal instructions. Normal subjects were conditioned to either fear-relevant stimuli (snakes or spiders) or neutral stimuli (flowers or mushrooms) in a differential conditioning paradigm with shock as the unconditioned stimulus. In a subsequent extinction series, half of the subjects were shown the conditioned stimuli under masking conditions preventing their conscious recognition, whereas the other half were exposed to non-masked stimuli. Then half of the subjects in each of the masking conditions were verbally instructed that no more shocks would be delivered and then the extinction trials followed. Consistent with our hypothesis, differential responses to the fear-relevant CSs+ and CSs- remained unaffected by both masking and instruction, whereas differential responding to neutral stimuli was wiped out by the masking procedure and the verbal instruction.

Abstract: The present study examined two issues. Are skin conductance responses conditioned to fear-relevant stimuli, as contrasted with responses conditioned to fear-irrelevant stimuli, elicited after merely an automatic, nonconscious analysis of the stimulus content? Do fearful subjects show better conditioning to nonfeared but fear-relevant stimuli (e.g., conditioning to spiders in snake-fearing subjects) than do nonfearful subjects? Subjects afraid of snakes, but not of spiders, or vice versa (n = 32) and nonfearful subjects (n = 32) were shown either fear-relevant stimuli (snakes or spiders and rats) or fear-irrelevant stimuli (flowers and mushrooms) in a differential conditioning paradigm, where one of the stimuli was followed by an electric shock. During a subsequent extinction phase, the conditioned stimuli were presented under backward masking conditions, preventing their conscious recognition. Consistent with our hypothesis, during the masked extinction of the conditioned stimuli, differential skin conductance responses to conditioning and control stimuli remained only for subjects conditioned to fear-relevant stimuli. Both fearful and nonfearful control subjects had significantly larger differential electrodermal responses to fear-relevant than to fear-irrelevant stimuli. However, contrary to our hypothesis, fearful subjects did not show enhanced conditionability to their nonfeared but fear-relevant stimuli as compared with nonfearful control subjects.

Abstract: Normal subjects (n = 64) were exposed either to pictures of snakes and spiders or to pictures of flowers and mushrooms in a differential conditioning paradigm in which one of the pictures signaled an electric shock. In a subsequent extinction series, these stimuli were presented backwardly masked by another stimulus for half of the subjects, whereas the other half received non-masked extinction. In support of a hypothesis that suggests that nonconscious information-processing mechanisms are sufficient to activate responses to fear-relevant stimuli, differential skin conductance response to masked conditioning and control stimuli was obvious only for subjects conditioned to fear-relevant stimuli. These results were replicated in a second experiment (n = 32), which also demonstrated that the effect was unaffected by which visual half-field was used for stimulus presentation.