Quantitative and qualitative change in children's mental rotation performance

This study investigated quantitative and qualitative changes in mental rotation performance and solution strategies with a focus on sex differences. German children (N = 519) completed the Mental Rotations Test (MRT) in the 5th and 6th grades (interval: one year; age range at time 1: 10–11 years). Boys on average outperformed girls on both occasions (d_T1 = 0.45; d_T2 = 0.35). Strong quantitative change was reflected in increased test scores from time 1 to time 2. The increase was equivalent for girls (d = 1.04) and boys (d = 1.05). Qualitative change was investigated in a multigroup latent transition analysis (LTA) of the MRT items. LTA confirmed findings from prior studies showing that children used different solution strategies to solve the MRT problems. Girls tended to use less efficient strategies than did boys. Moreover, LTA revealed that participants showing inefficient solution strategies at time 1 tended to improve their performance less than students who already showed more elaborate strategies at time 1.     

Gender and sex bias in COVID-19 epidemiological data through the lens of causality

The COVID-19 pandemic has spurred a large amount of experimental and observational studies reporting clear correlation between the risk of developing severe COVID-19 (or dying from it) and whether the individual is male or female. This paper is an attempt to explain the supposed male vulnerability to COVID-19 using a causal approach. We proceed by identifying a set of confounding and mediating factors, based on the review of epidemiological literature and analysis of sex-dis-aggregated data. Those factors are then taken into consideration to produce explainable and fair prediction and decision models from observational data. The paper outlines how non-causal models can motivate discriminatory policies such as biased allocation of the limited resources in intensive care units (ICUs). The objective is to anticipate and avoid disparate impact and discrimination, by considering causal knowledge and causal-based techniques to compliment the collection and analysis of observational big-data. The hope is to contribute to more careful use of health related information access systems for developing fair and robust predictive models.     

Force– and power–time curve comparison during jumping between strength-matched male and female basketball players

The purpose of this study was to compare force– and power–time curve variables during jumping between Division I strength-matched male and female basketball athletes. Males (n?=?8) and females (n?=?8) were strength matched by testing a one-repetition maximum (1RM) back squat. 1RM back squat values were normalised to body mass in order to demonstrate that strength differences were a function of body mass alone. Subjects performed three countermovement jumps (CMJ) at maximal effort. Absolute and relative force– and power–time curve variables from the CMJs were analysed between males and females. Average force– and power–time curves were generated for all subjects. Jump height was significantly greater (p?≤?.05) in males than females. Absolute force was higher in males during the concentric phase, but not significantly different (p?≥?.05) when normalised to body mass. Significance was found in absolute concentric impulse between sexes, but not when analysed relative to body mass. Rate of force development, rate of power development, relative peak force, and work were not significantly different between sexes. Males had significantly greater impulse during the eccentric phase as well as peak power (PP) during the concentric phase of the CMJ than did females in both absolute and relative terms. It is concluded that sex differences are not a determining factor in measured force during a CMJ when normalised to body mass between strength-matched subjects. However, eccentric phase impulse and concentric phase PP appear to be influenced by sex differences independent of matching strength levels.     

女性的艰难与人的艰难——方方小说的一种读解

文章对方方笔下女性的精神状况作了探讨。指出方方小说呈现了中国当前社会文化背景下普遍又普通的女性存在。女性的性别觉醒是艰难的,觉醒后又面临生存的困窘。而这生存的困惑和挣扎也是社会中的人普遍面临的问题。     

Assessing risk of commercial sexual exploitation among children involved in the child welfare system

The objective of this study was to assess item characteristics indicative of the severity of risk for commercial sexual exploitation among a high-risk population of child welfare system involved youth to inform the construction of a screening tool. Existing studies have discerned factors that differentiate Commercial Sexual Exploitation of Children (CSEC) victims from sexual abuse victims, yet no research has been conducted to discriminate which items in a high risk population of youth are most predictive of CSEC. Using the National Survey of Child and Adolescent Well-Being (NSCAW) cohorts I and II, we examined responses from 1063 males and 1355 females ages 11 and older, over three interview periods.A 2-parameter logistic Item Response Theory (2 PL IRT) model was employed in order to examine item performance as potential indicators for the severity of risk for CSEC. Differential Item Functioning (DIF) analysis was conducted in order to examine potential differences in item responses based on gender. Modeling strategies to assess item difficulty and discrimination were outlined and Item Characteristic Curves for the final retained items were presented. Evidence for uniform DIF were present within items that asked about runaway, any drug use, suicidality, and experiencing severe violence. Results from this study can inform the construction of a screening instrument to assess the severity of risk for experiencing CSEC.     

论阿诗玛悲剧的成因——女性主义视角下的彝族叙事长诗《阿诗玛》

女性主义的价值立场使其获得了重新认识世界、重新定位各种传统价值观念的一个新的尺度。女性主义文学批评的一个重要成就表现在对传统经典文本的重新解读上,并在解读中重塑自我。对《阿诗玛》的重新解读为我们重新认识《阿诗玛》这个彝族文化中最为经典的文本提供了一个其他任何批评理论都无法代替的新视角。这部叙事长诗通过阿诗玛的命运,探索了彝族女性对自由的渴望,揭露了男权主义长期以来对妇女的压制,由此折射出彝族妇女艰难曲折地反抗命运、勇敢地走出父权制笼罩的阴影,走向主体性自我的艰难过程。     

Social–Sexual Interactions? Meta-Analyses of Sex Differences in Perceptions of Flirtatiousness,Seductiveness, and Promiscuousness

Scholars have assessed the degree to which heterosexual men and women make differential judgments of flirtatiousness, seductiveness, and promiscuousness during cross-sex interactions. Findings from extant research suggest that men decode verbal and nonverbal communication cues differently than do women, and this difference results in men's tendency to rate individuals more highly in levels of these social–sexual constructs than do women. This paper reports the results of three meta-analyses that provided estimates of the magnitude of the sex differences in perceptions of flirtatiousness, seductiveness, and promiscuousness and argues that these results are consistent with error management theory. Sex of target and mode of observation interacted to impact observed sex differences. Sex differences were strongest for female targets when research participants were observers of face-to-face interactions (average r=.32), whereas sex differences in evaluations of flirtatiousness, seductiveness, and promiscuousness were strongest for participants who were rating male targets in face-to-face interactions (average r=.36). The implications of these results are discussed.     

Beyond the Backlash: Sex and the City and Three Feminist Struggles

Much scholarly debate surrounds the extent to which female situation comedies make feminist contributions, particularly in a postfeminist context. While Sex and the City (SATC) can be read as a postfeminist text, this essay aims to recover the show's feminist meanings. To that end, this essay situates SATC within three key feminist struggles—between the individual and the collective, feminism and femininity, and agency and victimization. As Carrie, Charlotte, Miranda, and Samantha face each of these struggles, they often embody complex feminist identities. Exploring these complexities will highlight SATC's participatory elements as they relate to the ongoing feminist project.     

The functional approach to presidential television spots: Acclaiming,attacking, defending 1952–2000

This study examined the impact that instructional technology use, course design, and instructor and student sex differences have on students’ initial perceptions of affect toward the course and the instructor. Participants included 864 students who were randomly assigned to read one of 16 scenarios that manipulated the amount of instructional technology use across two types of courses with either male or female instructors. A factorial analysis of variance revealed a significant main effect for technology use on students’ initial affect, as well as a significant two‐way interaction effect of technology use by student sex. Planned cell comparisons revealed that technology use has primarily a curvilinear effect, whereby students in the minimal and moderate technology use conditions reported higher levels of initial affect than students in the no technology and complete technology conditions. For the two‐way interaction effect, planned cell comparisons revealed that female students reported higher levels of affect as the amount of technology use increased from minimal to moderate amounts of use, whereas male students reported lower levels of affect across the same two conditions. Overall, the results highlight the importance of using instructional technology within a framework of pedagogical methods designed to achieve specific instructional objectives.     

Powerless Language in Health Media: The Influence of Biological Sex and Magazine Type on Health Language

Powerless language influences how media consumers perceive the believability and trustworthiness of news sources. Past studies have suggested females use more powerless language, which can negatively influence credibility. However, previous research also suggests powerless language may be preferred in certain contexts. To investigate powerless language use in written health media, a content analysis investigated health-related articles in issues of 12 magazines between October 2008 and September 2009. Analysis compared differences in powerless language frequencies relative to three variables: biological sex of the author, biological sex of the audience, and the magazine's overall topic focus. Female authors and health-focused magazines used more powerless language than male authors and generic-focused magazines, and powerless language was more often directed towards a female audience than a male audience.