Receptive Behavior Research Articles

Microstructural evolution and mechanical performance of friction stir spot welded ultrafine carbide-free bainitic steel: Role of dwell time

This study focuses on unraveling the role of dwell time on microstructural evolution, mechanical performance, and failure characteristics of friction stir spot welded ultrafine carbide-free bainitic steel. Results clarify that the microstructures of the different weld zones exhibit a receptive behavior to extended dwell time, by which not only coarser martensite is acquired within the stir zone (SZ), thermo-mechanically affected zone (TMAZ), and fine-grain heat affected zone (FGHAZ) but also sub-critical heat affected zone (SCHAZ) experiences a more pronounced tempering. Applying a dwell time of 3 s is sufficient to make an ample bonding width containing refined martensite, being effective in retarding the crack propagation, and in turn, delivering a joint with the highest load-bearing capacity. However, enlarging the bonding width at dwell times beyond 3 s fails to provide higher peak loads owing to the formation of coarse martensite within the SZ. The failure modes of the welds are classified into two distinct modes: interfacial and partial pullout. The reduced upper sheet thickness (∼685 μm) paves the way for crack propagation along the thickness direction, allowing for partial pullout failure to occur.

Combination of low doses of mirtazapine plus venlafaxine produces antidepressant-like effects in rats, without affecting male or female sexual behavior.

Pharmacological treatments for depression are not always effective and produce unwanted side effects. Male and female sexual dysfunction is one of these side effects, which can lead to treatment withdrawal. Combination of two antidepressants with different mechanisms of action, like mirtazapine (MTZ) and venlafaxine (VLF) have been shown to be effective for treatment-resistant depression in humans. Combination of low doses of these drugs may still exert antidepressant-like effects without altering sexual behavior. To investigate the potential antidepressant-like effect of the chronic administration of low doses of MTZ plus VLF combined, as well as its impact on male and female sexual behavior in rats. The antidepressant-like effect of a 14-day treatment with combinations of MTZ plus VLF (0/0, 2.5/3.75 or 5/7.5mg/kg) was assessed in young adult male and female rats in the forced swim test (FST). The 5/7.5mg/kg MTZ/VLF combination was also tested in the chronic mild stress (CMS) test, in both males and females treated for 21days. The sexual effects of this last treatment were assessed in sexually experienced males and in gonadally-intact females during proestrus. The 5/7.5mg/kg MTZ/VLF combination produced an antidepressant-like effect in the FST and reversed the CMS-induced anhedonia in both male and female rats. This combination did not alter male sexual behavior, female proceptive and receptive behaviors or the regularity of the estrous cycle. The combination of low doses of MTZ and VLF might be a promising therapeutic alternative to treat depression without affecting the sexual response.

Comparative analysis of intragroup intermale relationships: a study of wild bonobos (Pan paniscus) in Wamba, Democratic Republic of Congo and chimpanzees (Pan troglodytes) in Kalinzu Forest Reserve, Uganda.

Although chimpanzees (Pan troglodytes) and bonobos (Pan paniscus) share a multi-male/multi-female societal organization and form male-philopatric groups, disparities in terms of male aggression and stability of temporary parties are thought to exist among them. However, existing research in bonobos has mainly focused on the high social status, prolonged receptivity, and characteristic sexual behaviors of females, leaving the behaviors of males understudied. Moreover, prior comparative studies on Pan suffer from methodological inconsistencies. This study addresses these gaps by employing a uniform observation method to explore party attendance and aggressive interactions among male bonobos in Wamba and male chimpanzees in Kalinzu. Unlike male chimpanzees, which exhibit dispersion in the absence of receptive females in the group, male bonobos showed a lesser degree of such dispersion. Although the overall frequency of aggressive interactions per observation unit did not significantly differ between the two species, the nature of these interactions varied. Notably, severe aggressive behaviors such as physical confrontations among adult males were absent in bonobos, with most aggression occurring between the sons of the two highest-ranking females. Additionally, in bonobos, females actively engaged in polyadic aggressive behavior as aggressors, while all instances of coalitionary aggression in chimpanzees originated from male aggressors. These findings underscore the substantial impact of female behaviors on the observed distinctions in male aggressive interactions between the two species.

Kisspeptin administration may promote precopulatory behavior in male rats independently or supplementally to testosterone and contribute to proceptive behavior in female partners, reducing mating failure

Kisspeptin is a peptide that plays an important role through its effects on the hypothalamus-pituitary–gonadal (HPG) axis. It has also been implicated in sexual behavior. The present study investigated whether the relationship between kisspeptin and sexual behavior is independent of the HPG axis, i.e., testosterone. Sexual behavior was examined after the administration of kisspeptin to gonadally intact male rats and gonadectomized male rats that received testosterone supplementation. Other male rats were also observed for sexual behavior once a week from 2 to 5 weeks after gonadectomy and receiving kisspeptin for the sixth postoperative week. Sexual behavior in female rats serving as the partner for each male was also observed. Female rats were not administered kisspeptin in the present study. The results obtained showed that the administration of kisspeptin increased precopulatory behavior in gonadally intact male rats and gonadectomized male rats that received testosterone supplementation and proceptive behavior in their female partners. Precopulatory behavior in males and receptive behavior in females increased, while copulatory behavior in males and receptive behavior in females remained unchanged. Furthermore, the administration of kisspeptin increased precopulatory behavior in gonadectomized males, but did not affect receptive behavior in females. These results suggest that kisspeptin affected males independently and/or supplementally to testosterone, and also that changes in the presence of testosterone in males had an impact on proceptive behavior in their female partners. In conclusion, kisspeptin may involve an as-yet-unidentified neural pathway in sexual desire independently of the HPG axis.

Significant insights from a National survey in China: PrEP awareness, willingness, uptake, and adherence among YMSM students

IntroductionFew studies focused on the Pre-Exposure Prophylaxis (PrEP) -related aspects, and the applicability of prior evidence to young men who have sex with men (YMSM) students was unknown. This study aimed to assess the awareness, willingness, uptake, and adherence (AWUA) to PrEP among YMSM students in China and to explore the associated factors with these stages.MethodsA cross-sectional survey with a sizable sample of 1151 was conducted among YMSM students aged 16 and above, who self-identified as men who have sex with men(MSM) and resided in mainland China between October 20 and December 20, 2021. The chi-square test and Fisher’s exact test were used for univariate analysis, followed by multivariable logistic regression analysis of influencing factors at all levels.ResultsAccording to the cascade analysis approach, 88.71% of the participants were aware of PrEP, among which 66.7% expressed willingness to use it. Among those who were willing to use PrEP, only 13.80% took it, and of those who took it, 44.68% adhered to it. The students taking PrEP were those with higher education (OR = 4.239, 95% CI: 1.334–13.467), residence in pilot cities (OR = 2.791, 95% CI: 1.498–5.198), residence in high-risk areas (OR = 5.082, 95% CI: 2.224–11.612), engagement in multi-person sexual behavior (OR = 2.186, 95% CI: 1.236–3.867), and substance use (OR = 1.908, 95% CI: 1.167–3.118). Furtherly, students with higher adherence to PrEP were likely to have receptive sexual behaviors (OR = 8.702, 95% CI: 2.070-36.592), absence of substance use (OR = 4.468, 95% CI: 1.371–14.561), and uptake of PrEP through daily oral route. (OR = 7.065, 95% CI: 1.699–29.371).ConclusionYMSM students exhibit distinct patterns of “high awareness, low willingness, low uptake, and low adherence” to PrEP. Strategies for reduction in the acquisition of HIV prioritizing the current features of utilizing PrEP were urgently warranted.

Social Communication Traits in Typical Hispanic Infants and Toddlers for Use in Autism Screening

The Centers for Disease Control and Prevention recommend that the first Autism Spectrum Disorder (ASD) screening of development and behavior for all children can be completed as early as 9 months of age. To address this recommendation this study was aimed at describing the gestural and oral receptive and expressive social communicative behavior of typical Puerto Rican Hispanic children, using skills in the Early Social-Communication Scales (ESCS). Twenty Puerto Rican infants and toddlers, 10-14 months of age, were studied. Each participant was examined and observed (using video-audio recordings), by a trained speech-language pathology graduate student and a speech-language pathologist of the FILIUS Center. One clinician elicited while the other observed each child’s responses to the ESCS items. At the end, the recorded sessions were analyzed and discussed by the two observers to assign values to observed abilities on a scale of from 1 to 5 for each skill (1= does not execute; 5=very frequent execution). The strongest indicators of typical social communication in these Hispanic infants and toddlers demonstrate that, at that very early age, infants and toddlers are driven to interact with a stranger when accompanied by their mothers as a confirmation of their empathic dispositions. These strong indicators of social communication in typical Hispanic infants and toddlers can be observed by health professionals to identify difficulties in interaction skills as signs to refer children at-risk of autism.

Рекламный проект versus «творческая артель»: феномен творческого поведения в контексте авангардистских сообществ (на примере двух постановок «Победы над Солнцем»)

The article explores the phenomenon of creative behavior in the activities of avant-garde communities. Creative behavior becomes essential for understanding the avant-garde text, framing the text as a symbolic formation. It is argued that within the inherent focus on reader participation in avant-garde creativity, the realization of this pragmatic dominance is variable and depends on a complex set of institutional circumstances and the communicative pact between authors and the audience. Two avant-garde communities are chosen as examples: the pre-revolutionary avant-garde, the circle “Hylaea” led by D. Burliuk (“commercial project”), and the (post)revolutionary avant-garde, the society “Unovis” led by K. Malevich (“creative artel”). The specificity of recipient involvement in community actions depended on the established communicative pact, and this difference becomes apparent in the comparative analysis of the two productions of “Victory over the Sun” in 1913 and 1920. The receptive response in 1913 was largely determined by the following model of relations between the audience and the community: involvement through norm violation (scandal) and subsequent improvisation, as the scandal served as an advertising means to attract an audience due to the marginalization of the cubofuturists and the lack of access to literary resources. In 1920, the playful element of scandal is no longer present in the interaction scenario with the addressee (due to different institutional circumstances – external funding and the absence of the need to win over the audience). Therefore, the communication scenario was carried out as the interaction between a prophet-educator and a disciple-follower. The recipient’s receptive behavior also changed: either to engage in aesthetic action and dissolve in the collective subject or to observe the action from a distance without involvement.

The bilevel chamber revealed differential involvement of vasopressin and oxytocin receptors in female mouse sexual behavior.

Arginine vasopressin (AVP) and oxytocin (OT) are well-known as neuropeptides that regulate various social behaviors in mammals. However, little is known about their role in mouse female sexual behavior. Thus, we investigated the role of AVP (v1a and v1b) and OT receptors on female sexual behavior. First, we devised a new apparatus, the bilevel chamber, to accurately observe female mouse sexual behavior. This apparatus allowed for a more precisely measurement of lordosis as receptivity and rejection-like behavior (newly defined in this study), a reversed expression of proceptivity. To address our research question, we evaluated female sexual behavior in mice lacking v1a (aKO), v1b (bKO), both v1a and v1b (dKO), and OT (OTRKO) receptors. aKO females showed decreased rejection-like behavior but a normal level of lordosis, whereas bKO females showed almost no lordosis and no change in rejection-like behavior. In addition, dKO females showed normal lordosis levels, suggesting that the v1b receptor promotes lordosis, but not necessarily, while the v1a receptor latently suppresses it. In contrast, although OTRKO did not influence lordosis, it significantly increased rejection-like behavior. In summary, the present results demonstrated that the v1a receptor inhibits proceptivity and receptivity, whereas the v1b and OT receptors facilitate receptivity and proceptivity, respectively.

Dual-Band Metamaterial Microwave Absorber using Ring and Circular Patch with Slits

This paper proposes a dual-band metamaterial microwave absorber operating at 2.5 GHz and 5.8 GHz. The absorber consists of a ring and a circular patch with slits resonator structures printed on a FR4 dielectric substrate backed by a ground layer. The main advantage of the absorber lies in its design flexibility in which each absorption band is independent and can be individually tuned by changing the dimensions of each resonator structure. The absorber unit cell is simulated and parametrically optimized using Computer Simulation Technology (CST) software. The absorption mechanism is analyzed through surface current analysis. The absorber prototype, with dimensions of 200 × 200 × 1.6 mm3 and consisting of an array of 7 × 7 unit cells, is fabricated and experimentally investigated using antennas in free-space measurement. The absorber exhibits over 97% absorption at both resonance frequencies. Furthermore, the absorber is demonstrated to be applicable in sensing applications for dielectric constant determination. With its design simplicity, wide-angle receptive, and polarization insensitive behavior, it is envisaged that the proposed absorber will find practical use in absorbing and sensing applications.

What learning strategies influence higher-order learning behaviours of medical students?

Aims The aim of this study was to explore the relationship between the application of learning strategies and the emergence of higher-order learning behaviours among medical students in Chinese provincial undergraduate colleges, while also examining the impact of social demographic variables on the development of higher-order learning behaviours and learning strategy preferences. Methodology We conducted a relevant cross-sectional study using the Chinese College Student Survey (CCSS) online questionnaire to evaluate higher-order learning behaviours and learning strategies in medical undergraduate students attending provincial colleges in China. A total of 992 valid questionnaires were collected and analysed using SPSS 22.0 (SPSS Inc., Chicago, IL). We performed statistical analysis using one-sample t-tests to compare the results with the national norm score for medical subjects in undergraduate colleges. We also conducted variance analysis and regression analysis. Results The study found that the average scores for higher-order learning behaviours, enquiry-based learning and receptive learning behaviour among medical undergraduate students in provincial colleges were higher than the national norm score for medical subjects, indicating a positive trend. However, the average scores for other indicators were lower than the national norm score. The utilization of learning strategies and the development of higher-order learning behaviours among students were affected by various factors such as grade and gender. The study suggests that the preference for certain learning strategies, such as enquiry-based, receptive, integrative and collaborative, can have a significant impact on the emergence of higher-order learning behaviours. Conclusions The study has demonstrated a positive correlation between the utilization of learning strategies and the development of higher-order learning behaviours. This relationship has been observed in medical students attending provincial undergraduate colleges, where the adoption of enquiry-based, receptive, integrative and collaborative learning strategies has been found to significantly influence the emergence of higher-order learning behaviours. KEY MESSAGES The implementation of learning strategies among medical students in provincial undergraduate colleges in China has a significant impact on high-level learning behaviours. The impact of high-level learning behaviours is reliant on comprehensive support from four distinct learning strategies: receptive learning, inquiry-based learning, comprehensive learning and collaborative learning. One of the most impactful learning strategies is receptive learning, particularly on high-order learning behaviours. On the other hand, reflective learning does not seem to have a significant effect. Changes in grades can significantly impact higher-order learning behaviours and affect the propensity for reflective and collaborative learning strategies. Females generally exhibit a greater preference for receptive learning strategies, while males tend to exhibit a greater preference for inquiry-based learning strategies

Age at first exposure to antibiotics and neurodevelopmental outcomes in childhood

RationaleViral illnesses in children are common and are frequently treated with antibiotic medication. Antibiotics reduce the diversity and composition of the gut microbiota, leading to poor developmental outcomes.ObjectivesTo investigate the relationship between age at first exposure to antibiotics and cognitive and behavioural development at 4.5 years while controlling for multiple confounders, including otitis media.MethodsStudy participants were 5589 children enrolled in the broadly generalisable Growing Up in New Zealand cohort study, with antibiotic exposure data, maternal antenatal information, and age 4.5-year behaviour and cognitive outcome data. Children were categorised as first exposed to antibiotics according to the following mutually exclusive ages: 0–2 months; 3–5 months; 6–8 months; 9–11 months; 12–54 months or not exposed by 54 months. Developmental outcome measures included the Strengths and Difficulties Questionnaire, Luria hand clap task, and the Peabody Picture Vocabulary Test-III.ResultsIn univariate analysis, there was an evident dose–response relationship where earlier exposure to antibiotics in the first year of life was associated with behavioural difficulties, lower executive function scores, and lower receptive language ability. After adjusting for confounders, pairwise comparisons showed that first antibiotic exposure between birth and 3 months or between 6 and 9 months was associated with lower receptive vocabulary. Antibiotic exposure at any age prior to 12 months was associated with increases in behavioural difficulties scores at 4.5 years.ConclusionsFollowing adjustment for socioeconomic factors and otitis media, there is evidence that antibiotic exposure during potentially sensitive windows of development is associated with receptive language and behaviour later in childhood.

Rats in proestrus-estrus present more attention behaviors toward males and exhibit higher prefrontal-parietal EEG synchronization

According to the different stages of the estrous cycle, female rats exhibit behavioral changes associated with variations in sex hormone levels that affect the functionality of certain brain regions. In this study, we characterized the attention that female rats paid to a sexually-experienced male and the degree of electroencephalographic (EEG) activation and coupling between the medial prefrontal and posterior parietal cortices during antagonistic phases of the estrous cycle (proestrus-estrus vs. diestrous). The degree of attention paid to the stimulus was measured by the number of nose pokes performed while the rats were in a sexual incentive motivation box. EEGs were recorded in two conditions: a) awake-quiet state with no male rat present; and b) awake-quiet state in the presence of a male. Only during proestrus-estrus did the females show lower latency with a higher frequency and duration of nose pokes. In both cortices, the receptive females presented higher absolute power in all EEG bands recorded in the presence of the male, regardless of the phase of the estrous cycle. They also had greater EEG coupling between the medial prefrontal and posterior parietal cortices of the left hemisphere in all EEG bands regardless of the presence of a male. The higher synchronization between prefronto-parietal areas could be associated with the greater attention paid to, and adequate processing of, the sexual stimuli emitted by the male. Hence, it is probable that manifesting the proceptivity and receptivity behaviors characteristic of the proestrus-estrus phase requires a higher functional coupling between the prefrontal and parietal cortices.

A Study on Chinese Audience's Receptive Behavior towards Chinese and Western Cultural Hybridity Films Based on Grounded Theory-Taking Disney's Animated Film Turning Red as an Example.

For a long time, Chinese audiences have not had a high opinion of hybrid Chinese and Western movies. However, the unanimous praise for Turning Red in China se ems to have reversed this situation. In order to verify whether the attitudinal behavior of Chinese audiences toward the film's hybridization of Chinese and Western cultures has changed, this study collected textual materials reflecting the Chinese audience's receptive attitudes toward the film: Douban reviews, short reviews, questionnaires and Mtime.com reviews. Through a grounded study of 664,312 words, a total of 16 initial categories and four main categories were obtained. Finally, a cognitive-emotional-attitudinal mechanism model was formed to explain the audience's receptive behavior process. The study found that Chinese audiences' positive reception of Turning Red comes more from the fact that the film touches on personal emotions and focuses on a series of issues such as growing up, family, and gender, with intergenerational conflict as the core. The audience achieves self-projection and empathy while watching the film, rather than recognizing the Chinese culture presented therein. On this basis, the research further found that the internal structure of the current cultural hybridity has not changed greatly. The reason audiences do not give a high evaluation of cultural hybridity films lies in the lack of conscious distinction between the hybridity culture and the local culture. At the same time, in terms of cross-cultural creation, we should abandon the blind pursuit of cultural symbols, take root in cultural soil and then pay attention to more specific problems. This study reveals that the key factor affecting the audience's receptive behavior toward cultural hybridity films is not necessarily the performance of local culture, which is of great significance for establishing new evaluation criteria.

Adult Attachment Anxiety Is Protective Against the Effects of Internalized Homophobia on Condomless Sex Among Young Sexual Minority Men: The P18 Cohort Study

ABSTRACT Internalized homophobia, or the internalization of negative attitudes toward one’s sexual minority identity, is associated with sexual risk behaviors among young sexual minority men (YSMM). However, the formation and maintenance of secure or insecure socio-emotional bonds with friends, family members, and intimate partners (i.e., adult attachment) may mitigate or exacerbate the negative effects of exposure to internalized homophobia. Nevertheless, little is known about how adult attachment influences the association between internalized homophobia and sexual risk behaviors (e.g., condomless anal sex) among YSMM. Thus, this study examined the potential moderating effect of adult attachment on the association between internalized homophobia and condomless anal sex (CAS) behaviors (i.e., insertive CAS and receptive CAS) among a sample of N = 268 YSMM who participated in the study between June 2015-March 2017 using zero-inflated Poisson regression models. We found that adult attachment anxiety, but not adult attachment avoidance, significantly moderated the association between internalized homophobia and receptive CAS behaviors such that those higher on adult attachment anxiety and internalized homophobia had fewer receptive CAS events over the preceding 30 days as compared to those lower on adult attachment anxiety and internalized homophobia. Research efforts should focus on unpacking the complex associations between adult attachment, internalized homophobia, and sexual risk behaviors among YSMM.

Association of personality traits with maintenance and social behaviour of rams (Ovis aries)

Animal personality is defined as individual differences in behaviour that are consistent over time and in different contexts. Aspects of personality (personality traits) have been identified in previous studies on farm animals indicating that they may affect the individuals’ behaviour, dominance rank, coping and cognitive ability and physiology. The aim of the present study was to identify whether rams (Ovis aries) reared under an intensive farming system, present personality traits and if these traits are associated with the behaviour of individuals under different contexts, to gain a better understanding on sheep personality and the consistency of behaviour within individuals. Adult rams (N = 13) reared under an intensive system were observed during three different periods (A, B, C). At period A rams formed one stable group of eight individuals. Period B started when five rams entered the group simultaneously and period C when rams formed one stable group of 13 individuals. Scan sampling was used to record if and with whom each individual was in proximity. All social behaviours between individuals were collected ad libitum and maintenance behaviours were scored using focal sampling. The study demonstrated two personality traits, namely Dynamic and Receptive, as the two aspects of rams’ personality (KMO = 0.667; p < 0.01). Dynamic behaviour was correlated with frequent vocalizations (rs = 0.586, p < 0.05) while receptive behaviour was correlated with increased time lying (rs = 0.593, p < 0.05). Furthermore, an association was noted between individuals’ personality scores and social behaviour (p < 0.05), indicating that dynamic individuals appeared to perform more agonistic behaviour (p < 0.05) and receive more submissive (p < 0.01), within the examined periods.

Female mating rates and their fitness consequences in the common house spider Parasteatoda tepidariorum.

Mating systems, with varying female mating rates occurring with the same partner (monandry) or with multiple mates (polyandry), can have far reaching consequences for population viability and the rate of gene flow. Here, we investigate the mating rates of the common house spider Parasteatoda tepidariorum (Theridiidae), an emerging model for genetic studies, with yet undescribed reproductive behavior. It is hypothesized that spiders belonging to this family have low re-mating rates. We paired females twice with the same male (monandry) or with different males (polyandry), and recorded behaviors, mating success and fitness resulting from single- and double-matings, either monandrous or polyandrous. Despite the study being explorative in nature, we predict successful matings to be more frequent during first encounters, to reduce female risk of remaining unmated. For re-mating to be adaptive, we expect higher fitness of double-mated females, and polyandrous females to experience highest mating success and fitness if reproductive gains are achieved by mating with multiple partners. We show that the majority of the females did not mate, and those that did mated only once, not necessarily on their first encounter. The likelihood of re-mating did not differ between monandrous and polyandrous encounters and female mating experience (mated once, twice monandrous, twice polyandrous) did not affect fitness, indicated by similar offspring production. Female twanging of the web leads to successful matings suggesting female behavioral receptivity. Cannibalism rates were low and mostly occurred pre-copulatory. We discuss how the species ecology, with potentially high mating costs for males and limited female receptivity, may shape a mating system with low mating rates.

Influence of public hesitancy and receptivity on reactive behaviours towards releases of male Wolbachia-Aedes mosquitoes for dengue control.

Singapore, a highly urbanized Asian tropical country that experiences periodic dengue outbreaks, is piloting field releases of male Wolbachia-carrying Aedes aegypti mosquitoes with the aim of suppressing urban populations of the primary dengue vector Aedes aegypti. This study proposes and assesses a model to explain the roles of hesitancy and receptivity towards Project Wolbachia-Singapore in influencing reactive mosquito prevention behaviors (reactive behaviors) towards the release of Wolbachia-Aedes mosquitoes for residents living in the release sites. Interestingly, both hesitancy and receptivity predicted greater instances of reactive behaviors. The model also examines the roles of general knowledge about Wolbachia technology, perceived severity of mosquito bites, perceived density of mosquitoes, and social responsibility as predictors of hesitancy, receptivity, and reactive behaviors towards the release of Wolbachia-Aedes mosquitoes. Hesitancy towards the project mediated the effects of general knowledge, perceived severity of mosquito bites, and perceived density of mosquitoes on reactive behaviors towards the releases, although receptivity towards the project did not. Having less knowledge about Project Wolbachia-Singapore was associated with higher hesitancy towards the project and higher likelihood of performing reactive behaviors towards the releases. Individuals who perceive mosquito bites to be more severe and think that there are more mosquitoes in their living environments were also more likely to be hesitant about the project and practice reactive behaviors. However, both hesitancy and receptivity towards the project mediated the effect of social responsibility on reactive behaviors. Receptivity towards the project was driven by social responsibility, which was also associated with reduced hesitancy towards the project. Our findings suggest that, to address the hesitancy reported by a minority of participants, future outreach efforts should focus on strengthening the public's sense of social responsibility and on tailored education campaigns targeting groups with low levels of knowledge of the project.

Brain system integration and message consistent health behavior change.

Modifiable behaviors, including physical activity and sedentary behavior, are important determinants of health, and messages are important tools for influencing these behaviors. Functional neuroimaging research suggests that activity in regions of the brain's default mode and salience systems are independently associated with attending to health promoting messages. However, it remains unclear how these brain systems interact during exposure to persuasive messages and how this interaction relates to subsequent behavior change. Here, we examine how between-person differences in the relative integration between default mode and salience systems while viewing health messages relates to changes in health behavior. Using wrist-worn accelerometers, we logged physical activity in 150 participants (mean age = 33.17 years, 64% women; 43% Black, 37% white, 7% Asian, 5% Hispanic, and 8% other) continuously for an average of 10 days. Participants then viewed health messages encouraging physical activity while undergoing functional MRI (fMRI) and completed an additional month where physical activity was logged and the health messages were reinforced with daily text reminders. Individuals with higher default mode and salience system integration during health message exposure were more likely to decrease their sedentary behavior and increase light physical activity in the month following fMRI than participants with lower brain integration. Interactions between the salience and default mode systems are associated with message receptivity and subsequent behavior change, highlighting the value of expanding the focus from the role of single brain regions in studying health behavior change to larger-scale connectivity. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Sexual Preference of Crossbreed Ewes for Rams Medicated with Naloxone

Ewe sexual preference depends on several factors; ram attractiveness is important. This work was carried out in in the first week of September 2020 and repeated in November 2021. For the first trial two rams were treated with 0.5 mg naloxone im for 15 days, two control rams were treated with saline injections. Sexual preference was studied with synchronized ewes (n 0 12) displaying estrus at the end of naloxone treatment of the rams. Ewe’s proceptive and receptive behavior were noted. Plasma testosterone levels were monitored through the duration of the experiment in treated and control rams. For the second trial 4 rams and ewes were treated same as trial 1, and the number of ewes was increased to 24. It was observed that on the first week of treatment, testosterone levels were not significantly different between treated and control rams; but at the beginning of the second week of treatment testosterone plasma levels in naloxone treated rams increased until values reached levels of 15 ng/mL compared with 6 ng/mL in control rams. When ewes were exposed to treated and untreated rams during the first trial, 11 ewes showed high proceptivity and receptivity for the naloxone treated ram (p&lt;0.01) and they were mated, for the control ram only one ewe showed complete preference. In the second trial it was observed that 19 ewes also showed high proceptivity and receptivity for naloxone treated rams (p &lt; .001). Hormone levels behaved following the same pattern as that observed during the first trial. It was concluded that naloxone treatment facilitated the secretion of testosterone in rams and the high concentration of this androgen motivated ewes to prefer mating with the naloxone treated ram.

Effects of a GnRH agonist on sex behavior in females of the southern giant pouched rat.

In general, males should be particularly attentive to cues of sexual availability and females should advertise accordingly. Vaginal patency (i.e., the openness of the vagina) is a reliable indicator of sexual maturity; if the vagina is closed, the female is unable to copulate. The southern giant pouched rat (Cricetomys ansorgei) is unusual because females can have fully fused vaginal openings (i.e., vaginal nonpatency) despite being considered 'adults' by other metrics. Moreover, some females reversibly close their vaginal openings. Thus, vaginal patency in the pouched rat is a 'flexible' reproductive state. We subcutaneously implanted a long-acting GnRH agonist (deslorelin), which over time inhibits sex steroid secretion, to better understand the endocrinology and social behavior relating to vaginal patency in this species. We hypothesized that altering GnRH would impact both patency and behavior through its effects on circulating levels of estradiol. Six months of deslorelin treatment did not alter vaginal patency. Behaviorally, deslorelin-treated females spent less time interacting with, and were more aggressive towards males (compared to controls). Notably, deslorelin did not alter female scent marking. We conclude that behavioral receptivity, but not vaginal patency, is impacted by GnRH hormonal cascades in the pouched rat.