Urine as a communicator in a New World primate,Saimiri sciureus

New World primates face problems of communication distinct from those of their Old World counterparts. We suspected that the odor of urine might serve the function of communicating information among animals or troops. Two studies were conducted withSaimiri sciureus; one examined, in a laboratory enclosure, the influence of breeding season, social condition, area, and whether the urine was from known animals or from strangers, and the second measured, in a seminatural rain forest, responses to our spreadingSaimiri urine on selected sites. Enclosure and field produce the same general patterns of frequencies of behavior for urination, the urine wash and kick wash, and rubbing. The chief difference in behavior between the environments is found in the frequency of sneezing. Season (breeding or nonbreeding) is the most effective variable producing this general pattern: During the breeding season, males urine-wash throughout the enclosure or troop range, whereas during the nonbreeding season, this behavior is restricted in location, at least in the enclosure. At this time, females increase their frequencies of sniffing and rubbing. Many of these behaviors are observed only in special locations of the enclosure. The results show thatSaimiri respond differently to the urine of known and foreign animals, depending upon the season and whether they are with members of their own sex or both sexes. It is suggested that primates not equipped with specialized organs for scent marking may use urine opportunistically to communicate.     

Use of a technology‐enhanced version of the good behavior game in an elementary school setting

The purpose of this study was to investigate the effectiveness of a variation of the Good Behavior Game (GBG) in which teachers used ClassDojo to manage each team's progress. ClassDojo is a computer‐based program that enables teachers to award students with points for demonstrating target behaviors. Dependent variables included class‐wide disruptive and academically engaged behavior, teachers’ ratings on the Behavior Intervention Rating Scale (BIRS), and the rate of teacher praise statements delivered in each phase. Overall, results indicated that the GBG with ClassDojo was effective at reducing disruptive behavior, increasing academically engaged behavior, and was rated as socially valid. Additionally, when the intervention was in place, increases in the amount of behavior‐specific praise statements delivered were observed across all three classrooms.     

The effect of body composition and BMI on 25(OH)D response in vitamin D-supplemented athletes

Fat mass is inversely associated with vitamin D status, and athletes with the most adipose tissue may have the greatest risk for insufficient (25(OH)D 20–32?ng?mL^?1) or deficient (25(OH)D??1) status. The effects of fat and lean mass on 25(OH)D change in response to vitamin D supplementation have yet to be elucidated in athletes. In addition, vitamin D has a known role in bone health yet a link between short-term changes in 25(OH)D and bone turnover in indoor athletes have not yet been described. Thirty-two collegiate swimmers and divers (19 male, 13 female; 19 (1) years) participated in a 6-month randomized controlled trial and consumed either 4000?IU?d^?1 of vitamin D₃ (n?=?19) or placebo (PLA; n?=?13). Anthropometry and blood collection of 25(OH)D, bone-specific alkaline phosphatase (B-ALP) and N-terminal telopeptide (NTx) occurred at three time points. Dual-energy X-ray absorptiometry measured body composition analysis at baseline and endpoint. In the vitamin D group, BMI was negatively correlated with 6-month 25(OH)D change (R?=??0.496; P?=?.03) and a stronger predictor of 25(OH)D change (P?=?.04) than ultraviolet B exposure and fat mass change. Athletes in the high bone turnover group showed significantly greater losses of 25(OH)D over 6-months compared to athletes in the low bone turnover group (P?=?.03). These results suggest athletes within the normal BMI category experience a diminished response to 4000?IU?d^?1 of vitamin D₃ supplementation, and periods of high bone turnover may be an additional risk factor for developing compromised vitamin D status in athletes.     

When Athlete Activism Clashes With Group Values: Social Identity Threat Management via Social Media

On November 30, 2014, five African American St. Louis Rams players locked hands and displayed a “hands-up” gesture during player introductions in response to racial tensions in Ferguson, Missouri, emanating from the Michael Brown case. This act generated significant media attention and prompted discussions via Facebook and Twitter. Two notable venues on social media for these conversations were the “Boycott the St. Louis Rams” Facebook page and the Twitter hashtag #BoycottRams. A thematic analysis of 1,019 user-generated Facebook comments and 452 tweets was conducted through the lens of social identity threat management. Six primary themes emerged: (a) renouncing fandom, (b) punishment commentary, (c) racial commentary, (d) general criticism, (e) attacking other group members, and (f) presenting the “facts” of the case. The results suggest that social media sites such as Facebook and Twitter serve as forums where group members discuss and debate challenges to group values and promote action steps that can mitigate social identity threats. This form of protest holds implications for minority athletes’ activism efforts and sport organization administrators.     

Equality and Merit: A Merit-Based Argument for Equity Policies in Higher Education

We assume, for the sake of argument, that the sole purpose of colleges and universities is the advancement of knowledge through teaching and research, and that academic merit, as defined by each discipline, ought to be the only relevant criterion in admissions and hiring decisions. Even on this restrictive set of assumptions, we argue that hiring and admitting women and people of color is sometimes the best way for colleges and universities to advance knowledge. We then address two objections to our argument, that race and sex are no more relevant than being left- or right-handed, and that the epistemic attributes we ascribe to women and people of color belong to people as individuals, not as members of certain groups. We conclude that academic merit and social justice are mutually compatible.     

An Evaluation of the Effectiveness and Acceptability of Teleconsultation

School-based psychological services are typically provided through a triadic model of consultation in which a school psychologist works directly with a teacher or school staff member to address the academic, behavioral, or mental health concerns of a student. With advances in current technology, school psychologists have the capacity to use videoconferencing to engage in their consultative responsibilities. Teleconsultation has the potential to improve the provision of consultative services by increasing school psychologists’ efficiency and providing individuals, especially those in rural areas, access to greater service. The current study evaluated the effectiveness and acceptability of teleconsultation as a means to deliver behavioral consultation services to three teachers and their students. A nonconcurrent multiple baseline across subjects was used. Results showed that consultants could develop a behavioral intervention with a teacher and effectively implement the intervention to improve student outcomes. Teachers also rated teleconsultation as an acceptable means for service delivery.     

Application of the neuromuscular fatigue threshold treadmill test to muscles of the quadriceps and hamstrings

PurposeThe purposes of the present study were: (1) to determine whether the physical working capacity at the fatigue threshold (PWC_FT) model that has been used for estimating the onset of neuromuscular fatigue in the vastus lateralis (VL) during incremental treadmill running could also be applied to the vastus medialis (VM), biceps femoris (BF), and semitendinosus (ST) muscles; and (2) if applicable, to compare the running velocities associated with the PWC_FT among these muscles.MethodsEleven subjects (age 21.7 ± 1.8 years) performed an incremental treadmill test to exhaustion with electromyographic signals recorded from the VL, VM, BF, and ST.ResultsThe results indicated there were no significant (p > 0.05) mean differences in the running velocities associated with the PWC_FT for the VL (14.4 ± 2.0 km/h), VM (14.3 ± 1.9 km/h), BF (13.8 ± 1.8 km/h), and ST (14.7 ± 2.3 km/h). In addition, there were significant inter-correlations (r = 0.68–0.88) among running velocities associated with the PWC_FT of each muscle. Individual results also indicated that 9 of the 11 subjects exhibited identical PWC_FT values for at least 3 of the 4 muscles, but there were no uniform patterns for any intra-individual differences.ConclusionThe findings of the present study suggested that the PWC_FT test is a viable method to identify neuromuscular fatigue in the quadriceps and hamstrings during incremental treadmill exercise and results in consistent PWC_FT values among these muscles.