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Sperry, Sperry, and Miller (2018) aim to debunk what is called the 30-million-word gap by claiming that children from lower income households hear more speech than Hart and Risley (1995) reported. We address why the 30-million-word gap should not be abandoned, and the importance of retaining focus on the vital ingredient to language learning—quality speech directed to children rather than overheard speech, the focus of Sperry et al/s argument. Three issues are addressed: Whether there is a language gap; the characteristics of speech that promote language development; and the importance of language in school achievement. There are serious risks to claims that low-income children, on average, hear sufficient, high-quality language relative to peers from higher income homes.

Muconic acid is a bioprivileged molecule that can be converted into direct replacement chemicals for incumbent petrochemicals and performance-advantaged bioproducts. In this study, Pseudomonas putida KT2440 is engineered to convert glucose and xylose, the primary carbohydrates in lignocellulosic hydrolysates, to muconic acid using a model-guided strategy to maximize the theoretical yield. Using adaptive laboratory evolution (ALE) and metabolic engineering in a strain engineered to express the D-xylose isomerase pathway, we demonstrate that mutations in the heterologous D-xylose:H + symporter (XylE), increased expression of a major facilitator superfamily transporter (PP_2569), and overexpression of aroB encoding the native 3-dehydroquinate synthase, enable efficient muconic acid production from glucose and xylose simultaneously. Using the rationally engineered strain, we produce 33.7 g L −1 muconate at 0.18 g L −1 h −1 and a 46% molar yield (92% of the maximum theoretical yield). This engineering strategy is promising for the production of other shikimate pathway-derived compounds from lignocellulosic sugars. Muconic acid is a platform chemical with wide industrial applicability. Here, the authors report efficient muconate production from glucose and xylose by engineered Pseudomonas putida strain using adaptive laboratory evolution, metabolic modeling, and rational strain engineering strategies.

While college education is a key to upward mobility, low-income students are substantially less likely to earn bachelor's degrees than their more economically advantaged peers. Prior higher education literature illuminates various factors contributing to student success, but few studies consider the role of family support after students enter higher education. We examine how two different forms of family support—emotional and financial—are related to academic outcomes (grades, credit accumulation, and persistence) among low-income college students. Our analyses, based on a sample of 728 first-year low-income students attending eight four-year institutions, indicate that family emotional support plays an important role in fostering positive academic outcomes. Family emotional support is beneficial for academic outcomes as it promotes psychological well-being and facilitates greater student engagement. Financial support is not related to the outcomes examined in the sample as a whole. However, interaction models point to variation by first-generations status wherein continuing-generation students benefit more from family financial support than their first-generation peers. Presented findings offer valuable insights into the role of families in supporting low-income students in college and can inform institutional policies and practices aimed at facilitating their success.

Systemic racism is a scientifically tractable phenomenon, urgent for cognitive scientists to address. This tutorial reviews the built-in systems that undermine life opportunities and outcomes by racial category, with a focus on challenges to Black Americans. From American colonial history, explicit practices and policies reinforced disadvantage across all domains of life, beginning with slavery, and continuing with vastly subordinated status. Racially segregated housing creates racial isolation, with disproportionate costs to Black Americans’ opportunities, networks, education, wealth, health, and legal treatment. These institutional and societal systems build-in individual bias and racialized interactions, resulting in systemic racism. Unconscious inferences, empirically established from perceptions onward, demonstrate non-Black Americans’ inbuilt associations: pairing Black Americans with negative valences, criminal stereotypes, and low status, including animal rather than human . Implicit racial biases (improving only slightly over time) imbed within non-Black individuals’ systems of racialized beliefs, judgments, and affect that predict racialized behavior. Interracial interactions likewise convey disrespect and distrust. These systematic individual and interpersonal patterns continue partly due to non-Black people’s inexperience with Black Americans and reliance on societal caricatures. Despite systemic challenges, Black Americans are more diverse now than ever, due to resilience (many succeeding against the odds), immigration (producing varied backgrounds), and intermarriage (increasing the multiracial proportion of the population). Intergroup contact can foreground Black diversity, resisting systemic racism, but White advantages persist in all economic, political, and social domains. Cognitive science has an opportunity: to include in its study of the mind the distortions of reality about individual humans and their social groups.

This paper unpacks the meanings and implications of the mobility of international students in vocational education - an under-researched group in the field of international education. This four-year study found that transnational mobility is regarded as a resourceful vehicle to help international students 'become' the kind of person they want to be. The paper justifies the value of re-conceptualising student mobility as a process of 'becoming'. Mobility as 'becoming' encompasses students' aspirations for educational, social, personal and professional development. Theorising mobility as 'becoming' captures international students' lived realities and has the potential to facilitate the re-imagining of international student mobility with new outlooks. By theorising mobility as 'becoming', this research suggests the importance of drawing on the integrated and transformative nature of Bourdieu's forms of capital in understanding the logics and practice of the social field - international student mobility.

Policymakers aiming to close the well-documented achievement gap between advantaged and disadvantaged students have increasingly turned their attention to issues of teacher quality. A number of studies have demonstrated that teachers are inequitably distributed across student subgroups by input measures, like experience and qualifications, as well as output measures, like value-added estimates of teacher performance, but these tend to focus on either individual measures of teacher quality or particular school districts. In this study, we present a comprehensive, descriptive analysis of the inequitable distribution of both input and output measures of teacher quality across various indicators of student disadvantage across all school districts in Washington State. We demonstrate that in elementary school, middle school, and high school classrooms, virtually every measure of teacher quality we examine—experience, licensure exam scores, and value added—is inequitably distributed across every indicator of student disadvantage—free/reduced-price lunch status, underrepresented minority, and low prior academic performance. Finally, we decompose these inequities to the district, school, and classroom levels and find that patterns in teacher sorting at all three levels contribute to the overall teacher quality gaps.

Large achievement gaps exist between high- and low-income students and between black and white students. This article explores one explanation for such gaps: income segregation between school districts, which creates inequality in the economic and social resources available in advantaged and disadvantaged students' school contexts. Drawing on national data, I find that the income achievement gap is larger in highly segregated metropolitan areas. This is due mainly to high-income students performing better, rather than low-income children performing worse, in more-segregated places. Income segregation between districts also contributes to the racial achievement gap, largely because white students perform better in more economically segregated places. Descriptive portraits of the school districts of high- and low-income students show that income segregation creates affluent districts for high-income students while changing the contexts of low-income students negligibly. Considering income and race jointly, I find that only high-income white families live in the affluent districts created by income segregation; black families with identically high incomes live in districts more similar to those of low-income white families. My results demonstrate that the spatial inequalities created by income segregation between school districts contribute to achievement gaps between advantaged and disadvantaged students, with implications for future research and policy.

We estimate male-female test score gaps in math and English language arts (ELA) for nearly 10,000 U.S. school districts using state accountability data from third- through eighth-grade students in the 2008-2009 through 2015-2016 school years. We find that the average U.S. school district has no gender achievement gap in math, but there is a gap of roughly 0.23 standard deviations in ELA that favors girls. Both math and ELA gaps vary among school districts; some districts have more male-favoring gaps and some more female-favoring gaps. Math gaps tend to favor males more in socioeconomically advantaged school districts and in districts with larger gender disparities in adult income, education, and occupations; however, we do not find strong associations in ELA.

This article reports findings from a constructionist grounded theory study with 51 first-year college students. We explored student definitions and development of a sense of belonging during their first year of college. Belonging for all participants was shaped by 3 themes: environmental perceptions, involvement, and relationships. Yet, there were vast differences in the ways students from privileged and minoritized social identity groups defined belonging and made meaning of the 3 emergent themes. A model of belonging for privileged and minoritized college students is presented.

Tha author argues that despite the vast proliferation of scientific research, our understanding of dyslexia is marked by serious weaknesses of conceptualization, definition, and operationalization that are not only unscientific but also result in impoverished practice in schools, social inequity in both understanding and provision for many struggling readers, and ultimately, reduced life chances for millions of students worldwide. Key to this problem is the inconsistency of the use of the term dyslexia in both scientific research and clinical and educational practice. Four different, common conceptions of dyslexia are outlined, and the implications that each of these have for work with struggling readers are discussed. Whereas it is often claimed that scientific understandings, derived from genetics, neuroscience, and cognitive science, enable clinicians to validly identify, from within a larger group of poor readers, those individuals with dyslexia, the author shows this to be not only misleading but also potentially deleterious to broader inclusive practice. The author argues that the seemingly scientifically based construction of the dyslexic individual, often buoyed by vested interests, typically favors more socially privileged students and often undermines attempts to identify and help all of those who struggle to learn to read. Common responses by proponents to challenges to the dyslexia construct are outlined and discussed. In conclusion, the author argues that scientists, researchers, clinicians, and educators have a responsibility to address and confront the real-world consequences of much science but little wisdom in the field of reading disability.