The costs of crossing paths and switching tasks between audition and vision

Switching from one functional or cognitive operation to another is thought to rely on executive/control processes. The efficacy of these processes may depend on the extent of overlap between neural circuitry mediating the different tasks; more effective task preparation (and by extension smaller switch costs) is achieved when this overlap is small. We investigated the performance costs associated with switching tasks and/or switching sensory modalities. Participants discriminated either the identity or spatial location of objects that were presented either visually or acoustically. Switch costs between tasks were significantly smaller when the sensory modality of the task switched versus when it repeated. This was the case irrespective of whether the pre-trial cue informed participants only of the upcoming task, but not sensory modality (Experiment 1) or whether the pre-trial cue was informative about both the upcoming task and sensory modality (Experiment 2). In addition, in both experiments switch costs between the senses were positively correlated when the sensory modality of the task repeated across trials and not when it switched. The collective evidence supports the independence of control processes mediating task switching and modality switching and also the hypothesis that switch costs reflect competitive interference between neural circuits.     

Facing the Pariah of Science: The Frankenstein Myth as a Social and Ethical Reference for Scientists

Science and Engineering Ethics - Since its first publication in 1818, Mary Shelley’s Frankenstein; or, The Modern Prometheus has transcended genres and cultures to become a foundational myth...     

毛泽东、陈伯达和"马克思主义中国化"(1936-1938)

导言1938年毛泽东倡导的“马克思主义中国化”依然是中国共产党意识形态史上最有吸引力的话题之一。奇怪的是,虽然这个概念在大量的中国共产主义运动研究中受到过短暂的关注,但几乎没有被置于细致入微的历史和理论分析。①大致而言,这个概念包含两个相互独立又密切相关的维度。     

Patterns of alcohol use among rural and small-town adolescents

Much research has indicated that age, gender, grade in school, religiosity, socioeconomic status, and involvement in extracurricular activities are all related to adolescent alcohol use. However, most of such research focuses on urban youth. The present study examines patterns of rural adolescent alcohol use and factors associated with such use. The Student Alcohol Inventory was administered to 650 students in grades 7-12 in a small, middle-Atlantic town and surrounding county. The survey contained sections addressing demographic data, attitudes regarding students' alcohol use, and their parents' use. Along with standard SES measures, items were included on unemployment and receipt of government assistance. The dependent variables included age at first drink, frequency of drinking, amount of drinking, and a composite heavy-drinking index. Eighty-three percent of the respondents indicated that they had drunk alcohol and 57% had had their first drink by age 12. Gender and grade in school were significant predictors of alcohol use for all four dependent variables. Time spent in social activities was significant in predicting all but age at first drink. Religiosity was a significant predictor for only one dependent variable--age at first drink. The SES measures were also weak predictors of drinking behavior. Policy implications and directions for future research are discussed.     

Socially Assigned Gender Nonconformity: A Brief Measure for Use in Surveillance and Investigation of Health Disparities

Discrimination and violence targeting people perceived as gender nonconforming have been linked to a range of negative health outcomes, and large-scale representative data are needed to begin population surveillance of associated health disparities. A brief self-report measure of gender expression as perceived by others was tested using cognitive interviewing methods in a diverse sample of 82 young adults aged 18–30 years, recruited from the New England region in the U.S. Results identified themes related to item clarity, gender expression variation, undesirability of highest or lowest ends of item range, and tension between self and others’ perceptions. The item performed as expected and is recommended for use on studies of health disparities, including statewide and national public health surveillance tools.     

Health counseling competencies needed by the minister

The purpose of this study was to characterize current health counseling practices of the Church of Christ minister and to identify areas of needed health counseling competencies which should be addressed during professional preparation of the minister. The subjects who made up the sample for this study came from the population of active local ministers of the Churches of Christ who resided in the states of Arkansas, California, Oklahoma, Tennessee, and Texas.Specifically, it was found that the Church of Christ minister is most frequently called upon to offer counsel in the health-related areas of marital problems, patient counseling, death education, alcohol problems, drug use or abuse, and aging, respectively. It was also found that the majority of the ministers surveyed felt that their training for the ministry had not adequately prepared them to offer health counsel. The majority of the sample indicated that all health topics listed on the questionnaire should be required during initial preparation for the ministry. Other findings were also noted.