Chimpanzees’ use of conspecific cues in matching-to-sample tasks: public information use in a fully automated testing environment

Social animals have much to gain from observing and responding appropriately to the actions of their conspecific group members. This can in turn lead to the learning of novel behavior patterns (social learning) or to foraging, ranging, or social behavioral choices copied from fellow group members, which do not necessarily result in long-term learning, but at the time represent adaptive responses to environmental cues (public information use). In the current study, we developed a novel system for the study of public information use under fully automated conditions. We modified a classic single-subject laboratory paradigm—matching-to-sample (MTS)—and examined chimpanzees’ ability to interpret and utilize cues provided by the behavior of a conspecific to solve the task. In Experiment 1, two subjects took turns on an identity MTS task, with one subject (the model) performing the first half of the trial and the other subject (the observer) completing the trial using the model’s actions as discriminative cues. Both subjects performed above chance from the first session onwards. In Experiment 2, the subjects were tested on a symbolic version of the same MTS task, with one subject showing spontaneous transfer. Our study establishes a novel method for examining public information use within a highly controlled and automated setting.     

What to copy: the key factor of observational learning in striped jack (Pseudocaranx dentex) juveniles

Animals in social environments can enhance their learning efficiency by observing the behaviour of others. Our previous study showed that learning efficiency of schooling fish increased through the observation of the behaviour of trained demonstrator conspecifics. The present study aimed to verify the key factor of observational learning by investigating what information is important for social transmission of feeding information. A striped jack (Pseudocaranx dentex) observer was provided with one of the five observation treatments: (a) pellets observation, where pellets were dropped near the aeration in an adjacent tank; (b) responding conspecific observation, where a trained conspecific demonstrator responded to the aeration without food in the adjacent tank; (c) foraging conspecific observation, where a conspecific demonstrator foraged near the aeration in the adjacent tank; (d) nearby pellets observation, where pellets were dropped in a transparent column near the aeration in the observer tank; and (e) foraging heterospecific observation, where a filefish (Stephanolepis cirrhifer) demonstrator foraged near the aeration in the adjacent tank. The response to the aeration in these observers was compared with that of controls who did not observe any behaviour. Only individuals who observed foraging conspecifics showed a response to the aeration after observing. These results suggest that observer fish acquire feeding information not through recognition of prey items or through imitation of the demonstrator, but through the vicarious reinforcement of a conspecific for foraging.     

The effect of social learning on avoidance of aposematic prey in juvenile great tits (<Emphasis Type="Italic">Parus major</Emphasis>)

Social learning plays an important role in acquiring new foraging skills and food preferences in many bird species but its potential role in learning to avoid aposematic prey has never been studied. We tested the effect of social learning on the acquisition of avoidance of aposematic insect prey (firebug Pyrrhocoris apterus; Heteroptera) in juvenile, hand-reared great tits (Parus major). Behaviour towards aposematic prey was compared between two groups of birds: (1) the observers that were, prior to encounter with firebugs, allowed to watch the experienced conspecific demonstrator repeatedly refuse to attack the prey, and (2) the control birds that lacked this opportunity. Observing an experienced demonstrator was not sufficient for learning complete avoidance, because birds from both groups attacked at least the first firebug they had encountered in avoidance training. However, the opportunity to observe the avoidance behaviour of another bird significantly increased the rate of subsequent individual learning of observers in comparison with control birds. Social learning also decreased mortality of firebugs killed by the birds during the avoidance learning. Socially enhanced learning to avoid aposematic prey might be a mechanism important especially for naive juvenile birds learning from their parents, but it could also enhance learning in adults from their more experienced flock mates. Because social learning of avoidance may also lead to decreased mortality of aposematic prey, its effect should be taken into account in scenarios considering evolution and maintenance of prey warning signals.     

No “Slippery Slope”? An Empirical Case Study on the Effect of Secular Science Textbooks on Student Religiosity in a Christian Private School

In context of legal battles over science textbooks in both public and private schools, this empirical case study examines student religiosity scores over a 3-year period following a school-wide curricular change from Christian-published to secular science textbooks in a K-12 Christian private school. The study found no statistically significant change in student religiosity scores for two subscales (organizational and non-organizational religiosity; p = .799, p = .232, respectively); however, for the third subscale, intrinsic religiosity, a statistically significant increase in student religiosity was reported (p ≤ .001). The study suggests that the curricular change had no discernible negative affect on student religiosity scores. Moreover, the study suggests that Christian private schools may utilize secular science textbooks and remain faithful to their religious missions, especially when coupled with teacher training in faith-learning integration.     

Pilfering ravens, Corvus corax, adjust their behaviour to social context and identity of competitors

Like other corvids, food-storing ravens protect their caches from being pilfered by conspecifics by means of aggression and by re-caching. In the wild and in captivity, potential pilferers rarely approach caches until the storers have left the cache vicinity. When storers are experimentally prevented from leaving, pilferers first search at places other than the cache sites. These behaviours raise the possibility that ravens are capable of withholding intentions and providing false information to avoid provoking the storers' aggression for cache protection. Alternatively, birds may refrain from pilfering to avoid conflicts with dominants. Here we examined whether ravens adjust their pilfer tactics according to social context and type of competitors. We allowed birds that had witnessed a conspecific making caches to pilfer those caches either in private, together with the storer, or together with a conspecific bystander that had not created the caches (non-storer) but had seen them being made. Compared to in-private trials, ravens delayed approaching the caches only in the presence of storers. Furthermore, they quickly engaged in searching away from the caches when together with dominant storers but directly approached the caches when together with dominant non-storers. These findings demonstrate that ravens selectively alter their pilfer behaviour with those individuals that are likely to defend the caches (storers) and support the interpretation that they are deceptively manipulating the others' behaviour.This contribution is part of the special issue “Animal Logics” (Watanabe and Huber 2006).     

Children’s distributive justice: the role of gender norms in different settings

Children ages 6, 8 and 10 (N = 66) distributed resources to a boy and a girl when the proportion of feminine and masculine resources varied, when the preferences of the boy and the girl varied, and when the setting was public or private. Children used gender norms to sort the resources but they primarily sorted the resources equally, even when it required violating gender norms. When there was an atypical preference, participants provided more atypical resources to the children. However, when the setting was public, they provided fewer atypical resources. Overall the results indicate that gender norms are especially strong in public settings but explicit information about preferences can lead children to be flexible about gender norms.     

Mobility as a service and sustainable travel behaviour: A thematic analysis study

Mobility as a Service (MaaS) is a novel brand of transport that promises to replace private cars with multimodal personalised mobility packages enabled by a digital platform capable of integrating travel planning, booking and ticketing, and real-time information services. It is an intervention that through its digitisation, connectivity, information and sharing merits intends to inspire and support the transition to a more sustainable mobility paradigm. Recent research suggests, however, that the potential uptake of MaaS might not be overwhelming; current car drivers could face considerable difficulties in bypassing their personal car for it and, more worryingly, future MaaS users may substitute not only personal car trips but also public transport journeys with car-sharing and ride-sharing services. This means that MaaS might not be able to create travel behaviour change, and even if it does, the changes may not be always towards the right direction. Through conducting 40 semi-structured interviews in three different UK cities, namely London, Birmingham and Huddersfield, and employing a robust Thematic Analysis approach, this study explores the factors underpinning the uptake and potential success of MaaS as a sustainable travel mechanism. The challenges and opportunities reflecting and affecting potential for responsible MaaS usage refer to five core themes Car Dependence; Trust; Human Element Externalities; Value; and Cost, each of them with distinctive and diverse dimensions. Policy-makers and mobility providers should realise that MaaS success relies on changing people’s attitudes to private cars (something very challenging) and thus they should incentivise responsible MaaS use, promote public transport as its backbone, use public engagement exercises and trials to expose people to the concept and somewhat demonise private car ownership and car use.     

Religiosity/Spirituality of German Doctors in Private Practice and Likelihood of Addressing R/S Issues with Patients

This study examined the self-assessed religiosity and spirituality (R/S) of a representative sample of German physicians in private practice (n = 414) and how this related to their addressing R/S issues with patients. The majority of physicians (49.3 %) reported a Protestant denomination, with the remainder indicating mainly either Catholic (12.5 %) or none (31.9 %). A significant proportion perceived themselves as either religious (42.8 %) or spiritual (29.0 %). Women were more likely to rate themselves R/S than did men. Women (compared to men) were also somewhat more likely to attend religious services (7.4 vs. 2.1 % at least once a week) and participate in private religious activities (14.9 vs. 13.7 % at least daily), although these differences were not statistically significant. The majority of physicians (67.2 %) never/seldom addressed R/S issues with a typical patient. Physicians with higher self-perceived R/S and more frequent public and private religious activity were much more likely to address R/S issues with patients. Implications for patient care and future research are discussed.     

Not using the obvious: desert ants, Melophorus bagoti, learn local vectors but not beacons in an arena

Many ant species travel large distances to find food, sometimes covering distances that are up to one million times their body length. Even when these foraging trips follow convoluted paths, the ants usually find their way back to their nest with precision (Wehner et al. in J Exp Biol 199:129–140, 1996). Ants have been shown to use both compass cues in the sky (pattern of polarised light) and landmarks on Earth to return to their nest. We present two experiments conducted on a solitary foraging ant: Melophorus bagoti in their natural habitat in the central Australian desert. Ants were trained and tested in situ. We tested foragers’ ability to exit a circular arena which provided an undifferentiated panorama. Artificial visual landmarks were located near a small exit. On tests in which path integration information was not available, foragers did not use artificial landmarks as beacons. Instead, they oriented in the learned exit direction, whether or not it pointed to the nest. We suggest that M. bagoti foragers learned a context-specific local vector when cued by the context of the circular arena. Our findings present the first evidence that M. bagoti foragers learn context-specific compass directions to chart their initial path home.     

Monetary Wisdom: How Do Investors Use Love of Money to Frame Stock Volatility and Enhance Stock Happiness?

Monetary intelligence asserts: individuals apply their money attitude to frame critical concerns in the context and strategically select certain options to achieve financial goals and ultimate happiness. Bridging the gap between stock volatility and behavioral economics, we collected longitudinal data from multiple sources and at multiple times: First, private investors (N = 229) in Shanghai—the financial capital of China—completed their love of money attitude measure (Rich-affect, Motivator-behavior, and Importance-cognition) and demographic variables in a survey. Second, we recorded daily Shanghai Stock Exchange Composite Index (“the Index”) for 30 consecutive trading days during the financial crisis in 2008—public records. Third, we text-messaged investors, collecting their daily Index Happiness, Stock Percentage (stocks/liquid assets), and Stock Happiness—private information. Here, investors illustrate: high Rich investors fret about low Index happiness, yet high Rich and high Importance investors boast high stock happiness, supporting the endowment effect and investor hubristic smirk. High Motivator investors quickly adjust their stock percentage/portfolio, suffering low Index happiness and low stock happiness. Gender moderates the relationship between the Index and Index happiness. Our panel data of intra-personal changes of stock happiness demonstrate investor monetary wisdom in the boom-and-bust cycles. Behaviorally, investor must become masters (but not slaves) of money and deactivate money as a Motivator. Curbing the desire to become Rich enhances happiness after gains (boom/risk aversion); appreciating money’s Importance bestows happiness after losses (bust/risk seeking). We expand prospect theory and offer implications to investor wealth, health, and happiness during financial crisis in particular as well as individual subjective well-being and happiness in general.     

Information structuring improves recall of emergency discharge information: a randomized clinical trial

This article examines the extent to which structuring Emergency Department discharge information improves the ability to recall that information, and whether such benefits interact with relevant prior knowledge. Using three samples of students with different levels of prior medical knowledge, we investigated the amount of information recalled after structured vs. non-structured presentation of information. Across all student samples, the structured discharge information led to a relative increase in recalled items of 17% compared to non-structured discharge information (M = 9.70, SD = 4.96 vs. M = 8.31, SD = 4.93). In the sample with least medical knowledge, however, the structured discharge information resulted in a relative increase in recall by 42% (M = 8.12 vs. M = 5.71). These results suggest that structuring discharge information can be a useful tool to improve recall of information and is likely to be most beneficial for patient populations with lower levels of medical knowledge.     

Co‐Witness Confidence,Conformity, and Eyewitness Memory: An Examination of Normative and Informational Social Influences

We explored conformity and co‐witness confidence in eyewitness memory. Confederates provided misleading information and confidence ratings during a cued recall test, and participants publicly provided answers to this test in turn. Participants performed memory tests with a confederate, then completed individual memory tests. Results indicated that confederates who answered questions prior to participants impacted their public and private memory reports for accurate information but only impacted public reports for misleading information. Participants' confidence in their performance in the presence of a confederate mirrored the confederate's confidence levels, suggesting a confidence conformity effect. Results are explained in terms of differential effects of informational and normative influence for accuracy and confidence in co‐witness memory reports. Copyright © 2012 John Wiley & Sons, Ltd.     

Western scrub-jays (<Emphasis Type="Italic">Aphelocoma californica</Emphasis>) use cognitive strategies to protect their caches from thieving conspecifics

Food caching birds hide food and recover the caches when supplies are less abundant. There is, however, a risk to this strategy because the caches are susceptible to pilfering by others. Corvids use a number of different strategies to reduce possible cache theft. Scrub-jays with previous experience of pilfering other's caches cached worms in two visuospatially distinct caching trays either in private or in the presence of a conspecific. When these storers had cached in private, they subsequently observed both trays out of reach of a conspecific. When these storers had cached in the presence of a conspecific, they subsequently watched the observer pilfering from one of the trays while the other tray was placed in full view, but out of reach. The storers were then allowed to recover the remaining caches 3 h later. Jays cached more worms when they were observed during caching. At the time of recovery, they re-cached more than if they had cached in private, selectively re-caching outside of the trays in sites unbeknown to potential thieves. In addition, after a single pilfering trial, the jays switched their recovery strategy from predominantly checking their caches (i.e. returning to a cache site to see whether the food remained there) to predominantly eating them. Re-caching remained constant across the three trials. These results suggest that scrub-jays use flexible, cognitive caching and recovery strategies to aid in reducing potential future pilfering of caches by conspecifics.     

Common marmosets (<Emphasis Type="Italic">Callithrix jacchus</Emphasis>) do not utilize social information in three simultaneous social foraging tasks

Social foraging is suggested to increase foraging efficiency, as individuals might benefit from public information acquired by monitoring the foraging activities of other group members. We conducted a series experiments with captive common marmosets (Callithrix jacchus) to investigate to what extent marmosets utilize social information about food location when foraging simultaneously with conspecifics. Subjects were confronted with dominant and subordinate demonstrators in three experiments which differed in the amount of information about food location available to the demonstrators. In all three experiments, the focal subjects’ performance in the social condition was not enhanced in comparison to a non-social control condition. Because we could rule out kleptoparasitism and aggressive displacements as explanations, we argue that the subjects’ tendency for scramble competition by avoiding others and dispersing over the foraging area seems to inhibit or mask the acquisition of social information about the location of rewarded patches.     

Differences in Attributions for Public and Private Face-to-face and Cyber Victimization Among Adolescents in China,Cyprus, the Czech Republic,India, Japan,and the United States

ABSTRACT

The authors' aim was to investigate gender and cultural differences in the attributions used to determine causality for hypothetical public and private face-to-face and cyber victimization scenarios among 3,432 adolescents (age range = 11–15 years; 49% girls) from China, Cyprus, the Czech Republic, India, Japan, and the United States, while accounting for their individualism and collectivism. Adolescents completed a questionnaire on cultural values and read four hypothetical victimization scenarios, including public face-to-face victimization, public cyber victimization, private face-to-face victimization, and private cyber victimization. After reading the scenarios, they rated different attributions (i.e., self-blame, aggressor-blame, joking, normative, conflict) according to how strongly they believed the attributions explained why victimization occurred. Overall, adolescents reported that they would utilize the attributions of self-blame, aggressor-blame, and normative more for public forms of victimization and face-to-face victimization than for private forms of victimization and cyber victimization. Differences were found according to gender and country of origin as well. Such findings underscore the importance of delineating between different forms of victimization when examining adolescents' attributions.     

Modes of perceiving and processing information in birdsong (Agelaius phoeniceus, Molothrus ater, and Homo sapiens)

In a previous study I examined the abilities of red-winged blackbirds and brown-headed cowbirds trained with a go-right/go-left procedure to identify conspecific and alien song themes (Sinnott, 1980). Results showed that each bird species exhibited superior identification of conspecific final "trill" or "whistle" elements, relative to the alien species. The present study extends these results by examining human perception of these same song stimuli, by examining the effects of tutoring birds with alien final song elements, and by using latency analyses to investigate processing modes that are not apparent from analyses of percent-correct scores. Results suggest three different processing modes: First, humans attend primarily to the final song elements. Second, birds identifying alien songs attend primarily to the introductory elements and disregard information in the final elements. Third, birds identifying conspecific songs process both the initial and final elements, but their response latencies indicate that they direct their attention primarily to the initial elements and process the final elements without investing more time than do the alien birds that fixate on the initial elements. Conspecific special processing is discussed in relation to various psychophysical, ethological, and psycholinguistic frameworks. Human perception of birdsong is discussed in relation to backward recognition masking.     

The Influence of Compensation Method and Disclosure Level on Information Search Strategy and Escalation of Commitment

In this study we examined the extent to which compensation method and public disclosure influenced information search strategy and escalation of commitment. A laboratory experiment involving 182 student subjects employed a 3 (compensation: no-pay, salary, and contingent) by 2 (disclosure level: public and private) fully randomized, crossed design. Results show that in light of negative feedback concerning performance results of an investment portfolio, subjects whose initial allocation decisions were announced publicly reduced their search for prospective information, increased the search for retrospective information, and exhibited greater escalation of commitment than subjects who did not announce their initial investment strategy. The search for retrospective information and escalation of commitment was monotonically higher across the no-pay, salary, and contingent pay conditions respectively, while the search for prospective information decreased correspondingly. This study provides evidence that escalation of commitment is positively related to the search for retrospective information and negatively related to the search for prospective information. The results obtained from this experiment complement and extend prior work in the areas of accountability, cognitive dissonance and escalation of commitment. © 1997 by John Wiley & Sons, Ltd.     

Exposing information sharing as strategic behavior: power as responsibility and “Trust” buttons

Online platforms' success depends on individual's information sharing (IS). However, previous research showed that “knowledge is power” is a default‐perception in organizations and that individuals share relatively unimportant information while keeping the important private information for themselves. Trust has also been identified as important enabler of IS. We examined the role of power construed as responsibility for others' outcomes and of a “Trust” button, a theory‐inspired technological feature, using a 2(Power construals: opportunity vs. responsibility) × 2(Buttons: “Like” vs. “Like‐or‐Trust”) × 2(Information sharedness as within‐subjects factor; public, private) design. Findings showed that construing power as responsibility and “Trust” button's presence increased the sharing of private information; clicking behavior yielded insights into the underlying mechanisms. Theoretical and practical implications are discussed.     

Copy if dissatisfied,innovate if not: contrasting egg-laying decision making in an insect

The use of conspecific cues as social information in decision making is widespread among animals; but, because this social information is indirect, it is error-prone. During resource acquisition, conspecific cues also indicate the presence of competitors; therefore, decision makers are expected to utilize direct information from resources and modify their responses to social information accordingly. Here, we show that, in a non-social insect, unattractive egg-laying resources alter the behavioural response to conspecific cues from avoidance to preference, leading to resource sharing. Females of the adzuki bean beetle Callosobruchus chinensis avoid laying eggs onto beans that already have conspecific eggs. However, when we provided females with bean-sized clean glass beads with and without conspecific eggs, the females preferred to add their eggs onto the beads with eggs. The glass beads, once coated with water extracts of adzuki beans, enabled the females to behave as if they were provided with the beans: the females preferred bean-odoured glass beads to clean glass beads and they avoided the substrates with eggs. When females are provided with unattractive egg-laying substrates only, joining behaviour (i.e. copying) might be advantageous, as it takes advantage of information about positive attributes of the substrate that the focal animal might have missed. Our results suggest that given only unsatisfactory options, the benefits of copying outweigh the costs of resource competition. Our study highlights the importance of integrating multiple information sources in animal decision making.     

Religious Schools,Home Schools,and the Timing of First Marriage and First Birth

The timing of individuals’ family formation is important for a number of socioeconomic and health outcomes. We examine the influence of religious schools and home schools on the timing of first marriage and first birth using data from the Cardus Education Study Graduate Survey (N = 1,496). Our results from life tables and event-history regression models show that, on average, graduates of evangelical Protestant schools—but not Catholic school or homeschool graduates—have earlier marriages and births than public school graduates. Catholic school students have later first births on average than public school graduates. Models interacting schooling type with age and age-squared suggest that evangelical schoolers’ higher odds of marriage stem from higher odds of marrying at ages 21–30, and their higher odds of first birth stem from higher odds of births from ages 25–34. Catholic school and nonreligious private school students also have higher odds of marrying in the mid-20s and early-30s than do public school students. Evangelical, non-religious private, and Catholic school students all have lower odds of teenage births than public school students but higher odds of birth later in the life course. Homeschoolers do not differ on either outcome at any age. Our findings suggest that schools socialize their students with distinctive attitudes toward family formation that influence their behavior even many years after graduation, though these schools do not appear to be particularly harmful to life chances in terms of fostering marriage or childbearing at very young ages.