A psychometric investigation of group differences in mean and variability as measured by the Raven's Standard Progressive Matrices Plus

Researchers and the general public alike continue to debate ‘which is the smarter sex?’ Research to date suggests that males outperform females, females outperform males, while others find no differences in mean or variance. These inconsistent results are thought to occur for two reasons. First, studies rely on opportunity samples rather than samples that represent the general population. Second, researchers have not availed themselves of advances in psychometrics that allow for identification of bias in test items and the reliable evaluation of group differences. This dissertation addresses these two identified needs in the literature. Using a large representative U.K. sample, 926 seven to 18 year olds were assessed with the Raven’s Standard Progressive Matrices Plus (SPM+), a measure considered to be one of the best measures of general intelligence. In assessing a one-factor model of general intelligence, four research aims were addressed. First, confirmatory factor analyses and assessment of measurement invariance revealed that the SPM+ is not biased to either sex. Second, multiple group confirmatory factor analyses revealed there to be no significant differences between males and females in either mean or variance. Third, analyses revealed no significant sex differences in mean or variability in younger or older participants. Finally, method effects of Gestalt and Visuospatial answering strategies explained some of the residual variance in the model. For the overall sample, males were significantly disadvantaged by the visuospatial element of some of the items. For older participants, the influence of the methods effects was equivalent. It can generally be concluded that there are no significant sex differences in mean or variability on the SPM+ suggesting that there is no sex difference in general intelligence. Future research should employ representative samples and robust statistical methodologies to assess sex differences on the Raven’s from a multiple factor perspective

Assessing the Housing Need in the Latino Community

Neighborhood Development Alliance was founded in 1989. Its mission is to strengthen the vitality of lower income neighborhoods within the city of St. Paul by creating and preserving housing and business opportunities for residents of all income levels. In the beginning, NeDA focused on developing and renovating housing and assisting homeowners with home repair projects on the West Side of St. Paul. Over time NeDA became a Latino-oriented organization in order to serve the Twin Cities Latino population. This came about through NeDA's development of a bilingual staff and a request, particularly from the State of Minnesota's Housing Finance Agency (MHFA) to broaden our services beyond the West Side boundaries. In addition to development projects on the West Side, NeDA now offers Homebuyer Education and Financial Literacy Workshops as well as one-to-one counseling, foreclosure prevention counseling, and homeowner rehab programs throughout the Twin Cities seven county metro area. Broadly defined, these services reach out to low to moderate income households. More specifically, NeDA's bilingual staff focuses its resources in serving the growing Latino community. As the Latino population in Minnesota and the Twin Cities Metro area continues to increase and expand geographically, NeDA seeks to assess current unmet needs and future challenges. The purpose of this project was to assess the past and future trends of the Latino population in Minnesota to help NeDA move strategically forward in serving the Latino community's housing and financial education needs

Women’s experiences of maternity care in England: preliminary development of a standard measure

Background: As maternity services evolve and the population of women served also changes, there is a continuing need to effectively document the views of women with recent experience of care. A woman's maternity experience can have a positive or negative effect upon her emotional well-being and health, in the immediate and the long-term, which can also impact the infant and the wider family system. Measuring women's perceptions of maternity services is an important way of monitoring the quality of care provision, as well as providing key indicators to organisations of the services that they are providing. It follows that, without information identifying possible areas in need of improvement, it is not clear what changes should be made to improve the experiences of women during their journey through maternity services from pregnancy to the early weeks at home with a new baby. The objective is to describe the development process and psychometric properties of a measure of women's experience of maternity care covering the three distinctly different phases of maternity - pregnancy, labour and birth, and the early postnatal period. Methods: Data from a national survey of women who had recently given birth (n = 504) were used. Exploratory and confirmatory factor analytic methods were employed. The measure was assessed for underlying latent factor structure, as well as for reliability, internal consistency, and validity (predictive, convergent and discriminant). Results: The models developed confirmed the use of three separate, but related scales about experience of maternity care during pregnancy, labour and birth and the postnatal period. Data reduction was effective, resulting in a measure with 36 items (12 per scale). Conclusion: The need for a psychometrically robust and qualitatively comprehensive measure of women's experience of maternity care has been addressed in the development and validation of this prototype measure. The whole measure can be used at one time point, or the three separate subscales used as individual measures of experience during particular phases of the maternity journey with identified factor structures in their own right

Developing cognitive complexity and value pluralism within prevention curricula:: An empirical assessment of the Living Well with Difference course for secondary schools in England

Purpose: To promote gains in cognitive complexity (measured by integrative complexity, IC) associated with recognition of validity in others’ viewpoints/values, supporting peaceful conflict reduction. Design: Assessment of effectiveness of Living Well with Difference (LWWD) course designed to promote critical thinking about contested social issues. LWWD was delivered to 199 secondary school students in England, comprising eight hours of sessions in curriculum time. Findings: Results using Paragraph Completion Tests showed that IC increased in the intervention condition in comparison to the smaller control condition IC gains. Resilience scores did not show significant gain, although it correlated moderately with IC gain. Research Limitations: Unequal numbers of control: intervention groups, non-random school sample, and a moderate amount of missing data are potential limitations. Practical Implications: The discussion explores the possible contribution that LWWD can make to citizenship education and ‘deep’ critical thinking that engages with emo-tions and values, complementing prevention curricula in the light of EU recommendations

Distress tolerance mediates the relationship between maternal and paternal helicopter parenting and disordered eating among female emerging adults

Disordered eating (DE) has previously been associated with distress tolerance (DT) in emerging adults. Additionally, helicopter parenting has predicted DT and been linked to DE. The current study investigated the relationship between maternal (MHP) and paternal (PHP) helicopter parenting, DT, and DE in emerging adults. Analyses indicated DT mediates both MHP and PHP’s relationship with DE, βM = 0.02, 95% CIM[0.01, 0.05], βP = 0.03, 95% CIP[0.01, 0.06] in a sample of female undergraduate students. While previous research found connections between similar variables separately, this study is the first to the authors’ knowledge that found DT mediates this relationship

COVID-19-related stress mediates the relationship between emotional regulation difficulties and disordered eating in emerging female adults

COVID-19 has introduced heightened concern for disordered eating (DE) behaviors. Past research has also connected emotional regulation difficulties and DE behaviors in emerging female adults females. However, these variables have not been explored in relation to COVID-19-related stress. The current study examines COVID-19-related stress in the relationship between emotional regulation difficulties and DE in emerging female adults. Data collection from female undergraduate students (N = 378) found COVID-19-related stress mediates the relationship between emotional regulation difficulties and DE. Current study findings suggest COVID-19-related stress may play an important role in the relationship between emotional regulation difficulties and DE in emerging female adults

Silicon isotopes reveal recycled altered oceanic crust in the mantle sources of ocean island basalts

EP thanks the Chateaubriand STEM fellowship program for funding. FM thanks the European Research Council under the European Community’s H2020 framework program/ERC grant agreement #637503 (Pristine) and the Agence Nationale de la Recherche for a chaire d’Excellence Sorbonne Paris Cité (IDEX13C445) and for the UnivEarthS Labex program (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). PS thanks the support of the Marie Curie FP7-IOF fellowship “Isovolc”.The study of silicon (Si) isotopes in Ocean Island Basalts (OIB) has the potential to discern between different models for the origins of geochemical heterogeneities in the mantle. Relatively large (∼several per mil per atomic mass unit) Si isotope fractionation occurs in low-temperature environments during biochemical and geochemical precipitation of dissolved Si, where the precipitate is preferentially enriched in the lighter isotopes relative to the dissolved Si. In contrast, only a limited range (∼tenths of a per mil) of Si isotope fractionation has been observed from high-temperature igneous processes. Therefore, Si isotopes may be useful as tracers for the presence of crustal material within OIB mantle source regions that experienced relatively low-temperature surface processes in a manner similar to other stable isotope systems, such as oxygen. Characterizing the isotopic composition of the mantle is also of central importance to the use of the Si isotope system as a basis for comparisons with other planetary bodies (e.g., Moon, Mars, asteroids). Here we present the first comprehensive suite of high-precision Si isotope data obtained by MC-ICP-MS for a diverse suite of OIB. Samples originate from ocean islands in the Pacific, Atlantic, and Indian Ocean basins and include representative end-members for the EM-1, EM-2, and HIMU mantle components. On average, δ30Si values for OIB (−0.32 ± 0.09‰, 2 sd) are in general agreement with previous estimates for the δ30Si value of Bulk Silicate Earth (−0.29 ± 0.07‰, 2 sd; Savage et al., 2014). Nonetheless, some small systematic variations are present; specifically, most HIMU-type (Mangaia; Cape Verde; La Palma, Canary Islands) and Iceland OIB are enriched in the lighter isotopes of Si (δ30Si values lower than MORB), consistent with recycled altered oceanic crust and lithospheric mantle in their mantle sources.PostprintPeer reviewe

Verbal Initiation, Suppression, and Strategy Use and the Relationship with Clinical Symptoms in Schizophrenia

Objectives: Individuals with schizophrenia have difficulties on measures of executive functioning such as initiation and suppression of responses and strategy development and implementation. The current study thoroughly examines performance on the Hayling Sentence Completion Test (HSCT) in individuals with schizophrenia, introducing novel analyses based on initiation errors and strategy use, and association with lifetime clinical symptoms. Methods: The HSCT was administered to individuals with schizophrenia (N=77) and age-and sex-matched healthy controls (N=45), along with background cognitive tests. The standard HSCT clinical measures (initiation response time, suppression response time, suppression errors), composite initiation and suppression error scores, and strategy-based responses were calculated. Lifetime clinical symptoms formal thought disorder (FTD), positive, negative were calculated using the Lifetime Dimensions of Psychosis Scale. Results: After controlling for baseline cognitive differences, individuals with schizophrenia were significantly impaired on the suppression response time and suppression error scales. For the novel analyses, individuals with schizophrenia produced a greater number of initiation errors and subtly wrong errors, and produced fewer responses indicative of developing an appropriate strategy. Strategy use was negatively correlated with FTD symptoms in individuals with schizophrenia. Conclusions: The current study provides further evidence for deficits in the initiation and suppression of verbal responses in individuals with schizophrenia. Moreover, an inability to attain a strategy at least partly contributes to increased semantically connected errors when attempting to suppress responses. The association between strategy use and FTD points to the involvement of executive deficits in disorganized speech in schizophrenia

Mechanisms of Resilience in Children of Mothers Who Self-Report with Depressive Symptoms in the First Postnatal Year.

BACKGROUND: Symptoms of maternal postnatal depression are associated with an increased risk of adverse effects on child development. However, some children exposed to postnatal depression have outcomes similar to unexposed children, and can be referred to as resilient. This study aimed to determine the mechanisms of resilience in children exposed to depressive symptoms postnatally. METHOD: Data are from a prospective cohort study, the Avon Longitudinal Study of Parents and Children. Self-report questionnaire data were collected during pregnancy and the child's first 2 years regarding maternal views of parenting and her perception of the child. The Edinburgh Postnatal Depression Scale (EPDS) was completed postnatally at 8 months and the Strengths and Difficulties Questionnaire (SDQ) at age 11 years. Exposed children who scored above the median score of non-exposed children were defined as resilient. Structural equation modeling was used to investigate the development of resilience. RESULTS: From the core ALSPAC cohort, 1,009 children (6.9%) were exposed to maternal depression at 8 months postnatally. The SDQ total difficulties scores at 11 years of age indicated that 325 (32.2%) were resilient, 684 were non-resilient. Maternal positive feelings about parenting and child non-verbal communication at 15 months increased the likelihood of later resilience. CONCLUSIONS: In this study, resilience was associated with two factors: the child's nonverbal communication at 15 months and by maternal positive feelings about parenting. Early intervention to support mother-child interaction and foster child development in women identified with postnatal depressive symptoms may benefit later child resilience