Investigating the interaction between schizotypy, divergent thinking and cannabis use

Cannabis acutely increases schizotypy and chronic use is associated with elevated rates of psychosis. Creative individuals have higher levels of schizotypy, however links between cannabis use, schizotypy and creativity have not been investigated. We investigated the effects of cannabis smoked naturalistically on schizotypy and divergent thinking, a measure of creativity. One hundred and sixty cannabis users were tested on 1 day when sober and another day when intoxicated with cannabis. State and trait measures of both schizotypy and creativity were administered. Quartile splits compared those lowest (n=47) and highest (n=43) in trait creativity. Cannabis increased verbal fluency in low creatives to the same level as that of high creatives. Cannabis increased state psychosis-like symptoms in both groups and the high creativity group were significantly higher in trait schizotypy, but this does not appear to be linked to the verbal fluency change. Acute cannabis use increases divergent thinking as indexed by verbal fluency in low creatives.     

Family Physicians’ Awareness and Knowledge of the Genetic Information Non-Discrimination Act (GINA)

Historically, physicians have expressed concern about their patients’ risk of genetic discrimination, which has acted as a barrier to uptake of genetic services. The Genetic Information Nondiscrimination Act of 2008 (GINA) is intended to protect patients against employer and health insurance discrimination. Physicians’ awareness and knowledge of GINA has yet to be evaluated. In 2009, we mailed surveys to 1500 randomly selected members of the American Academy of Family Physicians. Questions measured physicians’ current knowledge of GINA and their level of concern for genetic discrimination. In total, 401 physicians completed the survey (response rate 26.9%). Approximately half (54.5%) of physicians had no awareness of GINA. Of physicians who reported basic knowledge of GINA, the majority were aware of the protections offered for group health insurance (92.7%), private health insurance (82.9%), and employment (70.7%). Fewer physicians were aware of GINA’s limitations regarding life insurance (53.7%) and long-term care insurance (58.8%). Physicians demonstrated highest levels of concern for health insurance, life insurance, and long-term care insurance discrimination, with less concern for employer and family/social discrimination. Level of concern for the risk of genetic discrimination did not correlate significantly with awareness of GINA. Approximately 17 months after GINA was signed into federal law, physicians’ knowledge remained limited regarding the existence of this legislation and relevant details. Physicians who are aware of GINA continue to have significant concerns regarding the risk of genetic discrimination. This study reveals the need to further educate physicians about the existence of GINA and the protections offered.     

Cognitive factors and willingness to participate in an HIV vaccine trial among HIV-positive injection drug users

There are gaps in our knowledge of the role cognitive factors play in determining people's willingness to participate (WTP) in therapeutic HIV vaccine trials. Using a cross-sectional study of HIV-positive injection drug users (IDU), we determined the role of three cognitive factors: HIV treatment optimism, self-efficacy beliefs, and knowledge of vaccine trial concepts in relation to WTP in a hypothetical phase 3 therapeutic HIV vaccine trial. WTP was 54%. Participants tended to be low in HIV treatment optimism (mean?=?3.9/10), high in self-efficacy (mean?=?79.8/100), and low in knowledge (mean?=?4.1/10). Items pertaining to HIV treatment optimism and knowledge of HIV vaccine trial concepts were generally unrelated to WTP. An increase in self-efficacy had a statistically significant positive association with WTP (OR?=?1.61, 95% CI?=?1.04-2.46, p?相似文献   

Infants generate goal-based action predictions

Predicting the actions of others is critical to smooth social interactions. Prior work suggests that both understanding and anticipation of goal-directed actions appears early in development. In this study, on-line goal prediction was tested explicitly using an adaptation of Woodward's (1998) paradigm for an eye-tracking task. Twenty 11-month-olds were familiarized to movie clips of a hand reaching to grasp one of two objects. Then object locations were swapped, and the hand made an incomplete reach between the objects. Here, infants reliably made their first look from the hand to the familiarized goal object, now in a new location. A separate control condition of 20 infants familiarized to the same movements of an unfamiliar claw revealed the opposite pattern: reliable prediction to the familiarized location, rather than the familiarized object. This study suggests that by 11 months infants actively use goal analysis to generate on-line predictions of an agent's next action.     

Action production influences 12-month-old infants' attention to others' actions

Recent work implicates a link between action control systems and action understanding. In this study, we investigated the role of the motor system in the development of visual anticipation of others' actions. Twelve-month-olds engaged in behavioral and observation tasks. Containment activity, infants' spontaneous engagement in producing containment actions; and gaze latency, how quickly they shifted gaze to the goal object of another's containment actions, were measured. Findings revealed a positive relationship: infants who received the behavior task first evidenced a strong correlation between their own actions and their subsequent gaze latency of another's actions. Learning over the course of trials was not evident. These findings demonstrate a direct influence of the motor system on online visual attention to others' actions early in development.     

The harmful and beneficial impacts of weight bias on well-being: the moderating influence of weight status

Weight bias is evident among normal weight and obese individuals. This weight bias may be associated with comparisons to others, which may enhance feelings of self-worth. However, the ego-enhancing versus ego-diminishing influence of these evaluations may be moderated by the individual's weight status, and the strength of these effects may be moderated by gender. Eight-five participants completed the Implicit Associations Test, questionnaires assessing explicit weight bias, body image, and self-esteem, and height and weight assessments. Implicit weight bias was prevalent among all individuals, p < .001, and was associated with a more positive body image, ps < .05, and higher self-esteem, ps < .01, for thinner individuals but a more negative body image and lower self-esteem for heavier individuals. Gender moderation effects were not observed. It is arguably problematic that the positive benefits to normal weight individuals’ self-esteem and body image appear to come via negative comparisons with overweight individuals.     

Further development of measures of early math performance for preschoolers

The purpose of this study was to examine the progress monitoring and screening accuracy for a set of curriculum-based measures (CBM) of early mathematics skills. Measures included counting objects, selecting numbers, naming numbers, counting, and visual discrimination. Measures were designed to be administered with preschoolers in a short period of time using a developmentally appropriate format, and to constitute minimal disruption to the classroom routine. Previous research indicated that each of these measures produced scores with acceptable consistency across alternate forms on consecutive days. Scores yielded on the experimental probes correlated moderately, in most cases, with two commonly used standardized measures (i.e., the Brigance Screens and TEMA-2). Performance on the probes also correlated with teacher rankings and ratings of child performance. In the present study, data were collected in two phases. In the first phase, a cohort of children were administered the early math measures in spring of preschool and were followed into winter of kindergarten where they were administered kindergarten CBM probes to examine the degree to which performance in preschool (as measured by the early math probes) could predict performance on similar tasks in kindergarten. Second, risk criteria were examined and compared to identification by the Brigance Screens. These analyses provided data about the potential accuracy of the probes for screening. In the second phase, sensitivity of the probes to performance differences was examined by comparing mean performance on the probes of preschoolers and kindergartners. The lowest-performing children were provided with seven intervention sessions to examine the degree to which probes could detect growth resulting from intervention. Directions for future research and implications for practice are discussed.     

When appearance concerns make women look bad: Solo status and body image concerns diminish women’s academic performance

Women entering male-dominated fields often find themselves the only women present, i.e., they experience solo status. Solo status diminishes women’s performance when women are negatively stereotyped in the testing domain (Inzlicht & Ben-Zeev, 2000) or when the performance is public (Sekaquaptewa & Thompson, 2002). Because women experience greater body image concerns than men and underperform when these concerns are high (Fredrickson, Roberts, Noll, Quinn, & Twenge, 1998), body image concerns may also cause diminished performance in solo women. Women were given a stigmatized (i.e., heavy) or neutral appearance (via a manipulated photograph), then tested as either solos or non-solos. Results showed that women performed more poorly when given a stigmatized appearance and placed under solo status compared to when only one of these factors were present. Social identity threat concerns (Steele, Spencer, & Aronson, 2002) mediated the solo status effect on performance for women given a stigmatized appearance.     

Ethnicity and Gender Stereotypes of Emotion

In three studies we investigated gender stereotypes of emotions among four ethnic groups in the U.S., using persons from these groups as informants about their own groups. European Americans’ reports of stereotypes were compared to those of African Americans (Study 1), Hispanic Americans (Study 2), and Asian Americans (Study 3). The examination of group differences was interpreted based on variations across ethnicities in norms concerning emotional expression and gender roles. Overall, gender stereotypes of emotion were evident among all ethnic groups studied, but European Americans’ gender stereotypes were the most gender differentiated. For example, European American stereotypes held that men express more pride than women do, but African Americans’ stereotypes of pride for men and women did not differ. Similarly, whereas among European Americans, women were stereotyped to express much more love than men do, the gender difference was smaller among Hispanic Americans and Asian Americans. These different norms may pose challenges for inter-cultural interactions, and they point to the importance of considering both gender and ethnicity simultaneously in the study of emotions.     

Vicarious traumatization and secondary traumatic stress: A research synthesis∗

Vicarious traumatization (VT) refers to harmful changes that occur in professionals’ views of themselves, others, and the world, as a result of exposure to the graphic and/or traumatic material of their clients. Secondary traumatic stress (STS) refers to a set of psychological symptoms that mimic post-traumatic stress disorder, but is acquired through exposure to persons suffering the effects of trauma. Numerous studies have sought to identify correlates of both VT and STS, yet there still exists a lack of conceptual clarity in the literature about VT, STS, and the related constructs of burnout and compassion fatigue. This has made it difficult to use the literature to inform practice and training. This study clarifies the definitions of VT and STS and uses levels of evidence analysis to synthesize the research findings to date. Originally planned as a meta-analysis, the study was re-designed as methodological issues in the literature became apparent that would call into question the validity of a meta-analysis. The current method of analysis documents the degree of evidence for the most commonly researched factors that have been researched as possible contributors to the development of both VT and STS, synthesizing the findings of published research and dissertations written in the English language from 1994–2003. Findings indicate that persuasive evidence exists for personal trauma history, reasonable evidence for perceived coping style, and some evidence for supervision experiences, as important predictors of VT. Persuasive evidence for amount of exposure to trauma material and reasonable evidence for personal trauma history are indicated as important in the development of STS. Limitations of the current study and directions for further research are discussed.