An investigation of schizotypy in injecting amphetamine users

A fully dimensional view of psychiatric disorder conceptualises schizotypy as both a continuous personality trait and an underlying vulnerability to the development of psychotic illness. Such a model would predict that the structure of schizotypal traits would closely parallel the structure of schizophrenia or psychosis. This was investigated in injecting amphetamine users (N = 322), a clinical population who have high rates of acute psychotic episodes and subclinical schizotypal experiences. Schizotypy was assessed using the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE), and psychotic symptoms were assessed using the Brief Psychiatric Rating Scale (BPRS). Using confirmatory factor analysis, O-LIFE subscale scores were mapped onto latent variables with their more clinical counterparts from the BPRS. A four-factor model comprising positive schizotypy, disorganisation, negative schizotypy, and disinhibition provided the best model fit, consistent with prior research into the structure of schizotypy. The model provided a good fit to the data, lending support to the theory that schizotypy and psychotic symptoms map onto common underlying dimensions.     

Are memories for sexually traumatic events "special"? A within-subjects investigation of trauma and memory in a clinical sample

According to a long-standing clinical tradition, sexually traumatic experiences are processed and recalled differently from other experiences, often leading to memory impairment. In this study, we compared the characteristics of traumatic memories for sexual violence and two other types of emotional experiences. N=44 women recruited from a local sexual trauma agency were asked to recall and describe three autobiographical events: sexual abuse/assault, a non-sexual trauma, and a positive emotional event. The characteristics of the three memory types were compared on both subjective and objective measures. Further, the potential influences of level of traumatic impact and dissociation were assessed. Results indicated that memories for sexual trauma were not impaired or fragmented relative to other memories. Instead, memories for sexual trauma were associated with a remarkably high level of vividness, detail, and sensory components. Further, high levels of traumatic impact were not associated with memory impairment. Implications for the ongoing traumatic memory debate are discussed.     

Antecedents and consequences of reactions to developmental 360° feedback

This study investigated the factors that influence leaders’ reactions to 360° feedback and the relationship of feedback reactions to subsequent development activities and changes in leader behavior. For leaders with low ratings, those who agreed with others about their ratings were less motivated than those who received low ratings and over rated themselves. For leaders with high ratings, agreement between self and other did not influence their motivation. Individuals with more favorable attitudes toward using feedback were more motivated following feedback. We found minimal support for hypothesized relationships between personality characteristics and reactions to feedback. Leaders’ reactions to feedback were not related to the number of follow-up activities they reported, but were related to the degree of change in ratings over time.     

Ketamine as a primary predictor of out-of-body experiences associated with multiple substance use

Investigation of “out-of-body experiences” (OBEs) has implications for understanding both normal bodily-self integration and its vulnerabilities. Beyond reported associations between OBEs and specific brain regions, however, there have been few investigations of neurochemical systems relevant to OBEs. Ketamine, a drug used recreationally to achieve dissociative experiences, provides a real-world paradigm for investigating neurochemical effects. We investigate the strength of the association of OBEs and ketamine use relative to other common drugs of abuse. Self-report data (N = 192) from an online survey indicate that both lifetime frequency of ketamine use and OBEs during ketamine intoxication were more strongly related to the frequency of OBEs and related phenomena than other drugs. Moreover, the apparent effects of other drugs could largely be explained by associated ketamine use. The present results, consistent with the role of NMDA receptors in OBEs, should encourage future studies of the role of neurochemical systems in OBEs.     

Spirituality and Self in Preadolescents: Implications for a connected curriculum

Drawing on recent studies of Canadian preadolescent girls and boys, this article considers how preadolescents' narratives can further our understanding of their spirituality and sense of self. This article reflects on how these often unheard voices might inform future research and education issues such as the role of teacher, pedagogy and curriculum. To bridge the divide between theory and practice, holistic educational activities based on promoting the connection among self (mind/body, emotion/cognition, rational/intuitive), community, and earth are outlined. The focus is on dialogue, connection, and the mutual co-creation of meaning.     

Sexual assault history and suicidal behavior in a national sample of women

This study examined demographic and psychosocial correlates of suicidal ideation and suicide attempts in women with histories of sexual assault in childhood and/or adulthood identified from a national sample of women. Multivariate analyses showed that women with histories of sexual assault in both childhood and adulthood reported significantly greater odds of lifetime suicide attempts, controlling for demographic factors and other psychosocial characteristics. As predicted, younger age (marginal), stressful life events (marginal), depression, PTSD, and alcohol dependence symptoms were also significantly associated with suicidal ideation. Furthermore, number of lifetime traumatic events and depression were each associated with lifetime odds of suicide attempts. Implications for studying the role of sexual trauma and other psychosocial factors in relation to women's suicidal behavior are discussed.     

Spatial memory for food hidden by rats (Rattus norvegicus) on the radial maze: studies of memory for where,what, and when

Rats (Rattus norvegicus) were allowed to hide food items on an 8-arm radial maze by carrying the items from the center to boxes at the end of each arm. Retrieval tests given after rats had hidden 4 items showed that they selectively returned to the maze arms where food had been hidden (Experiments 1 and 2). When rats were allowed to hide pieces of cheese (refed food) and pretzels (less preferred food) on different arms, they both hid and retrieved cheese before pretzels (Experiments 2-5). In Experiment 6, rats chose between arms where cheese and pretzels were hidden,with cheese degraded at one delay interval but not the other. Together, these experiments indicate memory for what and where but not when.