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Creators/Authors contains: "Simpkins, Sandra"

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  1. Free, publicly-accessible full text available December 1, 2026
  2. Free, publicly-accessible full text available September 1, 2026
  3. Scholars have increasingly argued that we need to attend to adolescents’ race, ethnicity, and culture in after-school activities to ensure positive effects. Still, little is known about adolescents’ perceptions of culturally responsive practices in after-school activities (i. e., the use of diverse teaching practices, cultural engagement, and affirming diverse language preferences), including whether they are stable over time and beneficial to Latine adolescents, who are minoritized in U.S. society. Theoretically, culturally responsive practices are expected to help after-school activities meet adolescents’ three basic needs as conceptualized by self-determination theory: autonomy, competence, and relatedness. Findings based on 134 Latine adolescents (53% girls, Mage =11.74 years) participating in an afterschool math enrichment activity suggest adolescents’ perceptions of culturally responsive practices in the activity were moderately stable from winter to spring. There were no significant differences in adolescents’ perceptions of culturally responsive practices based on gender or preferred language (i. e., English or Spanish), and significant positive associations emerged between adolescents’ perceptions of diverse teaching practices and their feelings of autonomy, competence, and relatedness. This study offers insights for future theory development in the after-school field, particularly in the context of program quality, culturally responsive practices, and their implications for adolescent development and well-being. 
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    Free, publicly-accessible full text available April 17, 2026
  4. Moulin, Leonard (Ed.)
    The present study investigated the longitudinal direct and indirect relations between mothers’ and fathers’ math ability self-concept, their child-specific math performance expectations and encouragement of math and science-related activities at home, and girls’ and boys’ math ability self-concept. Structural equation models were performed with longitudinal data from three waves of the Childhood and Beyond Study (CAB). The final sample consisted of 517 children and their mothers and fathers. The majority of children attended 2nd (26.1%), 3rd (25.5%) or 5th (40.4%) grade at first measurement point. Our results suggest that mothers and fathers with higher math ability self-concepts had higher expectations of their sons and encouraged their sons more, but not their daughters. Fathers’ math ability self-concept was indirectly related to the self-concept of their sons and this association was mediated by performance expectations. Furthermore, both boys and girls profited from their fathers’ expectations and girls benefitted from their fathers’ encouragement of math and science-related activities at home. In contrast, we found no effects from mothers’ beliefs and behaviors on child’s math ability self-concept. The findings underscore the relevance of fathers’ educational participation in the development of the math self-concept of ability of their children. 
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    Free, publicly-accessible full text available February 12, 2026
  5. ABSTRACT IntroductionIndividuals' math value beliefs are theorized to influence who persists in STEM. However, the existing findings on gender differences in adolescents' math value beliefs are inconsistent. The goal of this study was to use three existing datasets to help clarify when gender differences emerge for high school adolescents and for whom (i.e., adolescents across historical time, grade level, and race/ethnicity). Specifically, we examined the extent to which gender differences in adolescents' math value beliefs (i.e., interest, utility, and attainment) replicated (1) across three datasets spanning the 1990s to 2010s, (2) from 9th–12th grade, and (3) within each of the four largest U.S. racial/ethnic groups (i.e., Asian, Black, Latine, and White adolescents). MethodsWe tested these aims with three existing longitudinal U.S. datasets: the California Achievement Motivation Project (CAMP) (n = 8855), the Childhood and Beyond Study (CAB) (n = 582), and the High School Longitudinal Study (HSLS) (n = 21,000). Students were in high school (9th–12th grade) and half were girls (49%–53%). All three datasets included measures with the same or similar math value belief items, making conceptual replication possible. Results and ConclusionsOverall, we did not find strong evidence for meaningful gender differences in adolescents' math value beliefs overall. We did find meaningful gender differences in the oldest data set (CAB). When examined within each racial/ethnic group, we found no evidence of gender differences in math value beliefs among Black or Latine adolescents, but some differences among Asian and White adolescents. The findings align with the gender similarities hypothesis, suggesting adolescent girls and boys had similar math value beliefs. 
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    Free, publicly-accessible full text available April 1, 2026
  6. Though adults tend to endorse the stereotype that boys are better than girls in math, children tend to favor their own gender or be gender egalitarian. When do individuals start endorsing the traditional stereotype that boys are better? Using two longitudinal U.S. datasets that span 1993 to 2011, we examined three questions: (1) What are the developmental changes in adolescents’ gender stereotypes about math abilities from early to late adolescence? (2) Do the developmental changes vary based on gender and race/ethnicity? (3) Are adolescents’ stereotypes related to their math motivational beliefs? Finally, (4) do these patterns replicate across two datasets that vary in historical time? Adolescents in grades 8/9 and 11 were asked whether girls or boys are better at math (n’s = 1186 and 23,340, 49–53% girls, 30–54% White, 13–60% Black, 1–22% Latinx, and 2% to 4% Asian). Early adolescents were more likely to be gender egalitarian or favor their own gender. By late adolescence, adolescents’ stereotypes typically shifted towards the traditional stereotype that boys are better. In terms of race/ethnicity, White and Asian adolescents significantly favored boys, whereas Black and Latinx adolescents were more likely to endorse gender egalitarian beliefs. Adolescents’ stereotypes were significantly related to their expectancy beliefs, negatively for girls and positively for boys. 
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