Martin M. Chemers’s research while affiliated with University of California, Santa Cruz and other places

Background Mentored research apprenticeships are a common feature of academic outreach programs that aim to promote diversity in science fields. The current study tests for links between three forms of mentoring (instrumental, socioemotional, and negative) and the degree to which undergraduates psychologically identify with science. Participants were 66 undergraduate-mentor dyads who worked together in a research apprenticeship. The undergraduate sample was predominantly composed of women, first-generation college students, and members of ethnic groups that are historically underrepresented in science. Results Findings illustrated that undergraduates who reported receiving more instrumental and socioemotional mentoring were higher in scientist identity. Further, mentors who reported engaging in higher levels of negative mentoring had undergraduates with lower scientist identity. Qualitative data from undergraduates’ mentors provided deeper insight into their motivation to become mentors and how they reason about conflict in their mentoring relationships. Conclusions Discussion highlights theoretical implications and details several methodological recommendations.

We report results from two studies testing the Mediation Model of Research Experiences (MMRE), which posits that science (or engineering) self-efficacy and identity as a scientist (or engineer) mediate the association between support programs and students’ commitment to science, technology, engineering, and mathematics (STEM) careers. Study 1 included 502 matriculated and recently graduated undergraduate STEM students. Structural equation modeling analyses indicated that research experience, instrumental mentoring, and involvement in a community of scientists were associated with commitment to a STEM career, mediated through science/engineering self-efficacy and identity as a scientist/engineer. There were few interactions with ethnicity and none with gender. In Study 2, 63 undergraduate students in science/engineering support programs were surveyed with a similar instrument at the beginning and end of their programs. Pre-post analyses indicated that increases over time in community involvement were associated with increases in science/engineering self-efficacy, and increases over time in science/engineering identity were associated with increased commitment to a STEM career. Taken together, these two studies show the importance of psychological processes such as identity and self-efficacy in understanding the specific ways in which science/engineering support programs lead to enhanced commitment to a career in STEM among white and underrepresented minority undergraduate students.

We report results from two studies testing the Mediation Model of Research Experiences, which posits that science (or engineering) self‐efficacy and identity as a scientist (or engineer) mediate the association between support programs and students’ commitment to science, technology, engineering, and mathematics (STEM) careers. Study 1 included 502 matriculated and recently graduated undergraduate STEM students. Structural equation modeling analyses indicated that research experience, instrumental mentoring, and involvement in a community of scientists were associated with commitment to a STEM career, mediated through science/engineering self‐efficacy and identity as a scientist/engineer. There were few interactions with ethnicity and none with gender. In Study 2, 63 undergraduate students in science/engineering support programs were surveyed with a similar instrument at the beginning and end of their programs. Pre–post analyses indicated that increases over time in community involvement were associated with increases in science/engineering self‐efficacy, and increases over time in science/engineering identity were associated with increased commitment to a STEM career. Taken together, these two studies show the importance of psychological processes such as identity and self‐efficacy in understanding the specific ways in which science/engineering support programs lead to enhanced commitment to a career in STEM among White and underrepresented minority undergraduate students.

This mixed-methods study examines mentoring relationships in an ethnically diverse sample of undergraduates in majors related to science, technology, engineering, and math (STEM). Guided by an intersectionality framework, we examined whether features of research mentoring differ at the intersection of ethnicity and gender. Survey data from undergraduates (N = 486; 76% members of underrepresented ethnic groups; 66% women) revealed ethnic and gender variation in the amount of mentoring that participants reported receiving. Findings also showed that higher levels of instrumental mentoring at the study’s outset predicted higher STEM self-efficacy 1 year later. This finding was not moderated by ethnicity or gender, suggesting that instrumental mentoring bolsters self-efficacy among students from diverse backgrounds. To supplement the quantitative findings, we collected open-ended data from a subset of participants’ mentors (N = 97). Thematic analysis of these data provides insight into the range of strategies that mentors used to bolster students’ STEM self-efficacy.

Prior research shows that undergraduates tend to identify more strongly with the field of science after participating in scientific research. However, mediators that might account for this association are not well understood. In the current study, we propose that science self-efficacy may serve this mediational function. Specifically, data from a 2-year longitudinal study were used to test a model in which science self-efficacy was expected to mediate the association between research involvement and identity as a scientist. The ethnically diverse sample included 251 undergraduates who were recruited from colleges and universities across the United States. The hypothesized mediation model was tested with a cross-lagged panel analysis. As expected, greater levels of research experience at Time 1 predicted higher identity as a scientist at Time 3, and this association was mediated by science self-efficacy at Time 2. Exploratory analyses testing for ethnic and gender differences in the model suggested that the associations in the model were similar for undergraduates from diverse backgrounds. From a theoretical standpoint, the current study provides novel insight into how research experience, efficacy, and identity relate to one another over time. Applied implications center on the importance of involving undergraduates in research that has the potential to bolster their science self-efficacy. © 2015 Wiley Periodicals, Inc. J Res Sci Teach

This short-term longitudinal study examined (a) adolescents' contact with mentors who share their background in relation to the importance they place on having such mentors, and (b) the associations of these perceptions with self-efficacy, identity, and commitment to a science career. Participants were 265 ethnically diverse adolescents (M age = 15.82) attending a 4-week science education program. Cluster analyses indicated that at Time 1, underrepresented ethnic minorities were more often in the cluster defined by feelings of importance of having a matched-background mentor but not having much contact. Perceptions of contact increased over time for these students and were associated with increased feelings of identity as a science student. The results suggest the need for attending to individual differences in students' preferences for matched-background mentors.

A web-based survey of members of the Society for the Advancement of Chicanos and Native Americans in Science tested a model that proposed that the effects of science support experiences on commitment to science careers would be mediated by science self-efficacy and identity as a scientist. A sample of 327 undergraduates and 338 graduate students and postdoctoral fellows described their science support experiences (research experience, mentoring, and community involvement); psychological variables (science self-efficacy, leadership/teamwork self-efficacy, and identity as a scientist); and commitment to pursue a career in scientific research. Structural equation model analyses supported our predictions. Among the undergraduates, science (but not leadership/teamwork), self-efficacy, and identity as a scientist fully mediated the effects of science support experiences and were strong predictors of commitment. Results for the graduate/postdoctoral sample revealed a very similar pattern of results, with the added finding that all three psychological mediators, including leadership/teamwork self-efficacy, predicted commitment.

Des cadres mexicains ont répondu aux épreuves de leadership de Fiedler & Chemers mesurant le modèle de contingence (l'échelle du collègue le moins apprécié et les échelles de contrôle des situations) et à l'écheile d'autonomie de Snyder (1974). Leurs subordonnés ont été soumis à trois sous-échelles du Job Description Index de Smith, Kendall, et Hulin (1969): supervision, collegues et travail proprement dit. Les résultats ont fourni des éléments en faveur de la validité des échelles de leadership et confirmé la valeur prédictive du modèle de contingence pour ce qui est de la satisfaction liée aux relations avec les collègues. Mais les conclusions sont moins probantes pour la prédiction par le même modèle de la satisfaction due à la supervision. L'autonomie a atténué les effets du leadership sur la satisfaction au travail. Les scores des leaders qui étaient fortement autonomes ne correspondaient pas aux prédictions du modèle de contingence, ce qui était par contre le cas des leaders peu autonomes. Le rôle de l'autononiie dans la souplesse des leaders est analysé.

Functions of Leadership in Groups and OrganizationsElements of Effective LeadershipPotential Moderators of Leadership: Culture and GenderSome Conclusions