Potentially traumatizing events in panic disorder and other anxiety disorders.
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Biomedical subjects
Publications and source records attributed to S G Hofmann.
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This review critically discusses the empirical evidence for information-processing biases in social phobia. Distortions in attention, interpretation, and memory processes are analyzed as they apply to individuals with social phobia. The literature provides evidence for a specific attentional bias towards socially threatening stimuli and a specific interpretational/judgment bias towards self-relevant social information. However, there is little evidence to suggest that social phobia is associated with a memory bias for socially threatening stimuli. Furthermore, the relationship between the empirical evidence from information processing studies and the cognitive model of social phobia by Clark and Wells (1995) will be discussed.
Public speaking is the most commonly reported fearful social situation. Although a number of contemporary theories emphasize the importance of cognitive processes in social anxiety, there is no instrument available to assess fearful thoughts experienced during public speaking. The Self-Statements During Public Speaking (SSPS) scale is a 10-item questionnaire consisting of two 5-item subscales, the "Positive Self-Statements" (SSPS-P) and the "Negative Self-Statements" subscale (SSPS-N). Four studies report on the development and the preliminary psychometric properties of this instrument.
It has been hypothesized that effective psychological treatment for social phobia changes the person's representation of the self in a more positive direction. In order to test this hypothesis, we analyzed 506 thoughts that were endorsed by 23 social phobic individuals while anticipating socially stressful situations before and after exposure therapy. Treatment efficacy was assessed with the Social Phobia and Anxiety Inventory (SPAI) [Turner, S. M., Beidel, D. C., Dancu, C. V., & Stanley M. A. (1989) An empirically derived inventory to measure social fears and anxiety: the Social Phobia and Anxiety Inventory. Psychological Assessment, 1, 35-40)]. Subjects endorsed significantly fewer negative self-focused thoughts after treatment (on average 8.7% of the thoughts) than before treatment (26.5%, p < 0.005). These changes were highly correlated with pre-post difference scores in the social phobia subscale of the SPAI (r = 0.74, p < 0.0001). Implications of the results for the cognitive model of social phobia will be discussed.
Although panic attacks and schizophrenic symptoms are common comorbid conditions, little is known about the reason for this association. A critical review of the literature on the association between panic attacks and schizophrenic symptoms is presented. The findings reported in the literature are discussed as evidence for one of four competing hypotheses: 1) the reported association is due to a methodological artifact, 2) panic attacks cause schizophrenic symptoms, 3) schizophrenic symptoms cause panic attacks, and 4) panic attacks and schizophrenic symptoms share common etiologic factors. No firm conclusions can be drawn due to insufficient empirical data. The best preliminary explanation for the association is that the two disorders share common etiologic factors.
Panic Control Treatment (PCT) is a widely used, empirically validated cognitive-behavioral treatment for panic disorder. Initially developed for the treatment of panic disorder with limited agoraphobic avoidance, PCT more recently has been finding broader applications. It has been used as an aid to pharmacotherapy discontinuation in panic disorder; in the treatment of panic attacks associated with other disorders such as schizophrenia; and, in combination with a situational exposure component, in the treatment of patients with moderate to severe agoraphobia. The authors critically review the evidence for the clinical efficacy of PCT and recent work directed at further enhancing the long-term efficacy and cost-effectiveness of treatment.
Thirty-three social phobic adolescents were asked to name their ten most feared social situations. Two independent judges classified each situation reported by the participants into one of four situational domains: formal speaking/interactions, informal speaking/interactions, observation by others, and assertion. Fifteen participants (45.5%) were assigned a generalized subtype of social phobia because they endorsed at least moderate anxiety in all four situational domains. This subgroup scored higher on self-report measures of anxiety and depression than the rest of the sample. These results provide empirical support for the existence of subtypes of social phobia in adolescents.
OBJECTIVE: Whereas the fact of attrition during the course of treatment is well documented, little is known about the factors that affect sample selection before the beginning of a study ("pretreatment attrition"). The present study reports on the degree and sources of pretreatment attrition at two sites of a multicenter study on panic disorder that compared treatment outcomes for imipramine and cognitive behavior therapy. METHOD: Data were collected at two clinical research sites, one with a pharmacological treatment orientation (N = 420) and one with a psychosocial treatment orientation (N = 208). RESULTS: The main source of pretreatment attrition was participant refusal. At both research sites, eligible patients most often refused participation because they were either unwilling to start treatment with imipramine (30.6% and 47.4%, respectively) or discontinue their current medication (22.6% and 35.1%, respectively). CONCLUSIONS: Results from comparative treatment outcome studies are limited not only to people who meet the study criteria but also to those who are willing to begin a medication treatment and discontinue their current medication.
Ninety-three patients with panic disorder and mild or no agoraphobia were treated for their panic disorder by using either 11 sessions of individual cognitive-behavior therapy or imipramine. Before and after treatment, their panic disorder symptomatology was assessed, and a self-report measure was administered to measure personality disorder characteristics [Klein et al., 1990: Wisconsin Personality Disorders Inventory]. In addition, some patients received this personality assessment again after six monthly maintenance sessions. Both treatments were equally effective in reducing panic disorder symptomatology, and both treatments had a positive influence on personality disorder characteristics. Personality disorder characteristics did not predict treatment outcome in either group. The implications of the findings for the assessment of personality and the treatment of panic disorder are discussed.
To study the generality of fears among specific phobic individuals and controls, 31 individuals with a DSM-IV diagnosis of specific phobia (natural environmental type: n = 13; blood-injection-injury type: n = 10; and situational type: n = 8) and 33 never mentally ill control subjects participated in an interview and questionnaire study. Based on subjects' fear ratings on the Fear Survey Schedule, subjects were classified as either positive or negative with regard to fear categories that correspond to the five diagnostic subtypes of specific phobia. Phobics showed overall a more generalized form of fear than controls. Furthermore, situational fears were more common among specific phobics who did not meet criteria for specific phobia, situational type, than among controls. These results add to the literature on the functional relationship among different fears and suggest that specific phobias are not as "specific" as is implied by the current diagnostic system.
To study the etiology of public speaking anxiety (speech phobia), 30 Ss with the fear of public speaking, and 24 controls without this fear were asked about past public speaking experiences, their beliefs about the main reason for their phobia, and their concerns in the feared situation. All speech phobics met the DSM-III-R criteria for social phobia. Results showed that traumatic external events, vicarious and informational learning--the causes for phobia that fit in best with Rachman's conditioning theory--were notably uncommon among these phobics, who attributed their fear most often to panic attacks. Yet it was not clear whether panic attacks were causes or consequences of phobia.
Individuals meeting criteria of the revised third edition of Diagnostic and Statistical Manual for Mental Disorders (American Psychiatric Association, 1987) for social phobia with a fear of speaking in front of people were subdivided into those with (n = 16) and without (n = 14) avoidant personality disorder (APD). These individuals and nonanxious controls (n = 22) spoke in front of a small audience while speaking time, subjective anxiety, fearful thoughts, and electrocardiographic and respiratory measures were recorded. Controls spoke for longer than either social phobia group. Those with social phobia and APD reported more subjective anxiety and more fear cognitions than the other two groups; phobic individuals without APD showed greater heart rates in the phobic situation than either social phobics with APD or controls. The latter two groups did not differ in heart rate. These results indicate incongruent subjective and heart rate responses to the feared situation. A similar pattern of results was found when participants were divided into generalized and specific social phobia groups.
This study examined pretreatment factors associated with attrition from a clinical trial for panic disorder. The study group consisted of 162 patients who began 11-visit treatments. Six domains (demography, panic disorder severity, psychiatric comorbidity, illness/treatment attributions, coping styles, and personality styles) with 52 variables were used to predict attrition. One hundred twenty-two patients completed and 40 dropped out from treatment. Final multivariate regression analyses showed that the following two variables were independently associated with attrition: lower household income and negative treatment attitudes; attributing the panic disorder to life stressors and greater age were independently associated with attrition at the trend level. Preliminary analyses suggested, in addition, associations between attrition and lower education, shorter length of prior treatment, higher anxiety sensitivity, lower agoraphobic avoidance, and a coping style of seeking social support that were not confirmed by best predictor analysis. Psychiatric comorbidity and personality styles were unrelated to attrition. The implications of these findings for future research and clinical practice are discussed.
Twenty-four social phobics with public speaking anxiety and 25 nonphobic individuals (controls) gave a speech in front of two people. Subjective anxiety, gaze behavior, and speech disturbances were assessed. Based on subjects' fear ratings of social situations, phobics and controls were divided into the generalized and nongeneralized subtype. Results showed that generalized phobics reported the most, and nongeneralized controls the least anxiety during public speaking. All subjects had longer and more frequent eye contact when delivering a speech than when talking with an experimenter or sitting in front of an audience. Phobics showed more filled pauses, had longer silent pauses, paused more frequently, and spent more time pausing than controls when giving a speech. Generalized phobics spent more time pausing during their speech than the other subgroups (nongeneralized controls, generalized controls, and nongeneralized phobics). These results suggest that generalized phobics tended to shift attentional resources from speech production to other cognitive tasks.