How much of the increase in sex ratio (male to female) at birth since the early 1980s in China is attributed to increased prenatal sex selection? This question is addressed by exploiting the differential introduction of diagnostic ultrasound in the country during the 1980s, which significantly reduced the cost of prenatal sex selection. We…

Within the scope of this study, a cooperative learning method is implemented in a genetics unit, which has an important place in the high school curriculum in the Turkish education system. The Human Genome Project, cloning, genetically modified organisms, preconceptional sex selection, and developments in cancer diagnosis and treatment are some of…

A common decision parents face is the choice of school for their children. In Ireland, somewhat uniquely in an international context, this choice includes a large number of state-funded single-sex schools, to the point that this can be considered a realistic option for many parents. Focusing on secondary-level education and using the PISA 2018…

During the COVID-19 pandemic, one of the major concerns at the Universidad de Ciencias y Artes de América Latina (UCAL; the University of Sciences and Arts of Latin America) has been to keep offering high-quality education with effective teaching methodologies and creativity at its core. This article aims to describe and understand the use of…

High ratios of males to females in China have concerned researchers (Sen 1990, Yi et al. 1993) and the recent increase has alarmed policymakers worldwide. This paper presents an analysis of China's census data that indicates that the "missing girls" phenomenon is causally linked to enforcement of the One Child Policy. Fertility is lower…

Background: Due to their intersecting racial identity and gender identity, Black women are characterized by stigmatizing race-based sexual stereotypes (RBSS) that may contribute to persistent, disproportionately high rates of adverse sexual and reproductive health outcomes. RBSS are sociocognitive structures that shape Black women's social…

A stochastic actor-based model was used to investigate the origins of sex segregation by examining how similarity in sex of peers and time spent in gender-typed activities affected affiliation network selection and how peers influenced children's ("N" = 292; "M"[subscript age] = 4.3 years) activity involvement. Gender had…

In 2010, the Ministry of Education in Trinidad and Tobago converted 20 low-performing secondary schools from coeducational to single-sex. I exploit these conversions to identify the causal effect of single-sex schooling holding other school inputs constant. After also accounting for student selection, single-sex cohorts at conversion schools score…

This study examined the impact of performance goals on arithmetic strategy use, and how same-sex peer groups contributed to the selection of strategies used by first-graders. It was hypothesized that gender differences in strategy use are a function of performance goals and the influence of same-sex peers. Using a sample of 75 first grade…

The research reported in this article investigates whether promiscuity plays a role in same-sex and opposite-sex friend selection. Since same-sex friends share strong similarity and spend time with their friends' mates or potential mates, it becomes important to select same-sex friends who will not be sexual rivals. One way to determine rivalry in…

Data from 1,087 adolescent participants in three waves of the National Longitudinal Study of Adolescent Health were used to examine the effects of peer selection and socialization processes in adolescence on later reports of sexually transmitted infections (STI) and unintended pregnancies. Friends' attitudes and behavior were assessed with…

The purpose of this study was to determine if attending a single-sex, STEM-focused school was related to science and mathematics achievement among a sample of African American and Latina eighth-grade girls in one school district. A nonequivalent group, post-test only design was utilized in the study to mitigate the effects of selection bias. We…

In instructional settings, evolution and natural selection are challenging concepts to teach, due to the fact that these topics are difficult to observe in the laboratory or lecture hall. In the past few years, Avida-ED has emerged as an innovative tool for teaching evolutionary principles. It allows students to directly observe effects of…

Child sex abuse cases have been the target of considerable psycho-legal research. The present paper offers an analysis of psychological constructs for jury selection in child sex abuse cases from the defense perspective. The authors specifically delineate general and case-specific jury selection variables. General variables include…

Transferring a pedagogical proposal from a face-to-face environment to a virtual one is not an automatic conversion. It requires a thorough instructional design and the appropriate methodology. The main purpose of this study is to analyze the variables that influence the selection of an active methodology mediated by information and communication…