Playful mouth-to-mouth interactions of belugas (Delphinapterus leucas) in managed care.

Belugas (Delphinapterus leucas) engage in many forms of play (e.g., object, water, locomotor), but no play is quite as curious as the unusual form of cooperative social play involving mouth-to-mouth interactions. These playful interactions are characterized by two belugas approaching each other head-to-head and interlocking their jaws, clasping one another, as if they were shaking hands. Observed in belugas both in the wild and in managed care, it is seemingly an important type of social play that offers a unique way of socializing with conspecifics. To describe this unusual behavior, a group of belugas in managed care was observed from 2007 to 2019. Although adults participated in mouth-to-mouth interactions, most were initiated and received by young belugas. Both males and females engaged in mouth-to-mouth interactions and did so at similar frequencies. Individual differences in how many mouth-to-mouth interactions were initiated among calves were also observed. Due to the unique, cooperative nature of mouth-to-mouth interactions, which require both social and motor skills, it is hypothesized that these interactions may be used to test social and motor competency.

Social Comparison Processes of Hispanic Students at Hispanic Majority Institutions.

This paper describes the types of social comparison used by Hispanic students at a Hispanic Majority Institution through two studies (N = 406). We found that students engaged in upward identification more often than downward identification, downward contrast, and upward contrast. However, when comparing themselves on an academic measure, downward identification and upward contrast became relatively more frequent. Additionally, downward identification tended to predict higher self-reported confidence about academic abilities than other types of social comparison.

Context Matters: Stress for Minority Students Who Attend Minority-Majority Universities.

Research on college student stress has typically focused on institutions where the student population is predominately White and continuing-generation. This study explored student stress in a unique context-a public regional university where the majority of students are Latinx, first-generation (FGCS), and of low socioeconomic status (SES). Of the 355 participants in the study, 72.4% self-identified as Latinx and 59.7% were FGCS. Additionally, on a subjective scale of socioeconomic status (1 = lowest, 10 = highest), the mean response was 5.76 (SD = 1.56). Participants (18 years old or older) who were enrolled in a first-year seminar course were recruited for this study. Through an online survey during Fall 2018, first-year students reported levels of perceived and experienced stress related to academic, economic, intrapersonal, and interpersonal concerns. Results of regression analyses indicated that most types of stress were predicted by students' Latinx identity status and SES; FGCS status did not significantly predict stress. These findings highlight the need to explore solutions to address stress for Latinx and/or low SES students. Additionally, the study underscores the necessity of conducting research at educational institutions in which Latinx, FGC, and low SES students comprise the majority of the student body.

Keep Calm and Be Humble: Can Intellectual Humility Predict Test Anxiety?

Test anxiety is common and may lead to a range of negative outcomes, including poor exam performance. Therefore, it is important to explore psychological predictors of test anxiety. In this paper, we examined whether intellectual humility can predict test anxiety. In Study 1, college students (N = 181) completed an intellectual humility measure with four subscales and two different measures of test anxiety. In Study 2 (N = 196), a community sample recruited from an online workforce completed the same measures. In both studies, we found that intellectual humility was negatively related to test anxiety, such that higher intellectual humility predicted lower test anxiety. Specifically, Study 1 demonstrated a negative correlation between intellectual humility and the Sarason Test Anxiety Scale; Study 2 confirmed this negative relationship with both the Sarason and Westside test anxiety scales. We also found that this relationship was largely driven by the intellectual humility subscale of Independence of Intellect and Ego. Additionally, these results were present even when controlling for key demographic factors. These findings highlight intellectual humility's role in predicting exam anxiety and offer a potential avenue for intellectual humility to be leveraged into interventions to decrease exam anxiety in the future.

Investigation of lateralization of socio-sexual behavior in belugas (Delphinapterus leucas).

The majority of cetacean research suggests a right side/left cerebral hemisphere bias for processing visuospatial information and a left side/right cerebral hemisphere bias for processing social information. Beluga (Delphinapterus leucas) socio-sexual behavior involves motor skills coordination and is also hypothesized to serve a social function. The present study assessed whether 14 belugas in managed care displayed side bias in their lateral socio-sexual presentation behavior. No species-level bias was found, the majority of individuals did not display a side bias, and side use was not dependent on sex of the recipient, although some influence of swim direction was found. Only males had a statistically significant but small left side preference. Furthermore, there was a linear correlation with the left side being used increasingly more over Years 1-6 of life. This study suggests that belugas do not display consistent laterality of socio-sexual presentation behavior, which is in contrast to the laterality of mother-calf positions for belugas and the high levels of laterality that are reported for some behaviors of other cetacean species. Thus, it seems that beluga socio-sexual presentation behavior is flexible and may serve both motor skills practice and social functions, which likely involve both cerebral hemispheres as a cognitively engaging behavior.

The emergence and early development of socio-sexual behavior in beluga calves (Delphinapterus leucas).

While the ontogeny of beluga (Delphinapterus leucas) socio-sexual behavior has been documented in animals between 37- and 108-months-old, the first 36 months of life are yet to be examined. This study investigated how socio-sexual behaviors emerge over the first three years of life in a group of belugas in managed care. The emergence of socio-sexual behaviors was relatively consistent among immature animals. More complex behaviors, like s-posture presentations, developed in a piecemeal fashion (i.e., simple components of the behavior sequence emerged before complex components). The presence of an adult male significantly predicted if immature belugas would initiate and participate in socio-sexual behavior. However, partner preferences changed with age. In the first year of life, belugas engaged in sexual behavior with their mother most frequently but preferred to play with older males if given a choice. By the third year of life, belugas engaged in socio-sexual behavior most frequently with other immature animals. These findings enhance our understanding of how belugas develop sexually and socially and have implications for social housing practices of immature belugas.

The development of socio-sexual behavior in belugas (Delphinapterus leucas) under human care.

Although a catalog of beluga socio-sexual behavior has been established, to date, little is known about the development of beluga (Delphinapterus leucas) socio-sexual behavior. The present study explored how socio-sexual behavior developed in belugas under human care by recording the behavior of 5 belugas between years 4 and 10 of life. Overall, the presence of young male conspecifics was the most influential predictor of whether or not the subjects engaged in socio-sexual behavior, and social networks particularly emphasized the relationships between males in the social group. The subjects of the present study were also more likely to be involved in socio-sexual behavior as they matured and were more likely to be involved if they were male. Additionally, specific socio-sexual behaviors of the repertoire, including horizontal s-postures and pelvic thrusts, increased in prevalence throughout development. These findings have implications for conservation efforts as social group composition may contribute to the development of socio-sexual behavior, which in turn may influence the reproductive success of beluga populations. Furthermore, because socio-sexual behavior composes a substantial portion of a beluga's activity budget and the majority of the time spent socializing, it is likely crucial for social bonding and well-being in belugas, especially males.