Different combinations of perceptual, emotional, and cognitive factors predict three different types of delusional ideation during adolescence.

Although adolescence is a particularly sensitive period for the development of schizotypy (Walker and Bollini [Schizophr Res 54:17-23, 2002]), there has been relatively limited research on the psychological factors that specifically predict delusional beliefs during adolescence. We studied 392 school students aged 11 to 16 years with a battery of behavioral and psychometric measures. Anxiety and negative-other schemas mediated the relationship between hallucinatory experiences and paranoid beliefs; anxiety mediated the relationship between hallucinatory experiences and grandiose beliefs; anxiety and self-negative schemas mediated the relationship between hallucinatory experiences and "other delusions" (Schneiderian/reference/misidentification). Furthermore, a jump-to-conclusions (JTC) bias moderated the relation between anxiety and other delusions: scores in the other delusions category were highest in adolescents who had both high anxiety and a JTC bias. Sex and age had only weak effects upon delusional belief. Our findings provide novel data by highlighting the different factors that underpin three delusional subtypes during the vulnerable period of adolescence.

Assessing intervention effectiveness for reducing stress in student nurses: quantitative systematic review.

AIMS: To identify the types of interventions that are effective in reducing stress in student nurses, and to make recommendations for future research. BACKGROUND: Student nurses experience significant stress during their training and this may contribute to sickness, absence and attrition. Given the global shortage of nurses and high dropout rates amongst trainees, the importance for developing stress management programmes for student nurses is becoming more evident. To date, only one review has examined the effectiveness of stress interventions for student nurses, but the emergence of recent literature warrants a new review. DATA SOURCES: Research papers published between April 1981 and April 2008 were identified from the following databases: Medline, CINAHL, Behavioral Sciences Collection, IBSS and Psychinfo. REVIEW METHODS: A quantitative systematic review with narrative synthesis was conducted. Key terms included 'nurses OR nursing OR nurse', 'student OR students', 'intervention', 'stress OR burnout'. In addition to database searches, reference lists of selected papers were scanned, key authors were contacted and manual searches of key journals were conducted. RESULTS: The most effective interventions provided skills for coping with stressful situations (typically relaxation) and skills for changing maladaptive cognitions. Interventions which promoted skills to reduce the intensity or number of stressors were also successful. In most cases, stress interventions did not improve academic performance. CONCLUSION: The design of stress interventions should be driven by theory. Future studies should focus on interface and organizational factors and the long-term benefits of interventions for student nurses are yet to be demonstrated.

A survey of student nurses' attitudes toward help seeking for stress.

BACKGROUND: Globally, stress in student nurses may have serious implications for health, absenteeism, and attrition. Despite this, there is scant research on student nurses' attitudes toward help seeking. OBJECTIVES: To examine student nurses' attitudes toward stress and help-seeking. DESIGN METHODS AND STATISTICAL ANALYSIS: A cross-sectional questionnaire survey design was employed to gather data from 219 student nurses at two large U.K. universities. Two-sample chi-square tests and Fisher's exact tests were used to analyze categorical associations between responses. RESULTS: Most had experienced stress before, believed the incidence within the profession was high, and would disclose their own stress to family/friends rather than to colleagues or professional institutions. The most popular outpatient treatment choice was social support; few would choose formal advice. The most common factor influencing inpatient treatment choice was confidentiality; for many, this factor would also lead them to seek distant rather than local inpatient care. Encouragingly, most would not lose confidence in a stressed colleague. CONCLUSIONS: Negative attitudes toward stress and help seeking may be entrenched even before training and may have a marked influence on how/whether students seek help. Nurse employers and educators should foster more supportive and accepting attitudes toward stress in order to tackle its unwanted consequences.

Subclinical delusional ideation and appreciation of sample size and heterogeneity in statistical judgment.

Previous studies demonstrate that people high in delusional ideation exhibit a data-gathering bias on inductive reasoning tasks. The current study set out to investigate the factors that may underpin such a bias by examining healthy individuals, classified as either high or low scorers on the Peters et al. Delusions Inventory (PDI). More specifically, whether high PDI scorers have a relatively poor appreciation of sample size and heterogeneity when making statistical judgments. In Expt 1, high PDI scorers made higher probability estimates when generalizing from a sample of 1 with regard to the heterogeneous human property of obesity. In Expt 2, this effect was replicated and was also observed in relation to the heterogeneous property of aggression. The findings suggest that delusion-prone individuals are less appreciative of the importance of sample size when making statistical judgments about heterogeneous properties; this may underpin the data gathering bias observed in previous studies. There was some support for the hypothesis that threatening material would exacerbate high PDI scorers' indifference to sample size.