Choice Patterns Research Articles

Implications of the Niche Partitioning and Coexistence of Two Resident Parasitoids for Drosophila suzukii Management in Non-Crop Areas

Understanding the mechanisms associated with the coexistence of competing parasitoid species is critical in approaching any biological control strategy against the globally invasive pest spotted-wing drosophila (=SWD), Drosophila suzukii (Matsumura). This study assessed the coexistence of two resident pupal parasitoids, Trichopria anastrephae Lima and Pachycrepoideus vindemiae Rondani, in SWD-infested fruit, in disturbed wild vegetation areas of Tucumán, northwestern Argentina, based on niche segregation. Drosophilid puparia were collected between December/2016 and April/2017 from three different pupation microhabitats in fallen feral peach and guava. These microhabitats were "inside flesh (mesocarp)", "outside flesh", but associated with the fruit, and "soil", i.e., puparia buried close to fruit. Saprophytic drosophilid puparia (=SD) belonging to the Drosophila melanogaster group and SWD were found in all tested microhabitats. SD predominated in both inside and outside flesh, whereas SWD in soil. Both parasitoids attacked SWD puparia. However, T. anastrephae emerged mainly from SD puparia primarily in the inside flesh, whereas P. vindemiae mostly foraged SWD puparia in less competitive microhabitats, such as in the soil or outside the flesh. Divergence in host choice and spatial patterns of same-resource preferences between both parasitoids may mediate their coexistence in non-crop environments. Given this scenario, both parasitoids have potential as SWD biocontrol agents.

A clustering-based approach to quantifying socio-demographic impacts on urban mobility patterns

This paper uses a generalizable clustering approach to investigate the effects of socio-demographic features on aggregate urban mobility patterns, including activity distribution and travel modal split. We use K-means via principal component analysis to identify eight representative traveler clusters from the 2017 U.S. National Household Travel Survey. Based on the cluster centroids and the cluster percentages within a neighborhood, we can estimate a Temporal Mobility Choice Matrix ( TM) that describes the neighborhood-level aggregate mobility choice pattern. The estimation accuracy is assessed in a case study in LA City. It is found that the neighborhood-level temporal mobility patterns are well-replicated, with an average R2 of 65.47%, 53.15%, and 72.04% among all analyzed neighborhoods in the city. However, we find a moderate to low accuracy in estimating the spatial differences in the mobility patterns across neighborhoods. This could be because factors other than socio-demographics, such as physical and built environment factors like terrain, street quality, or amenity densities, are contributing to the spatial differences but have not been considered in this study. Overall, we show that socio-demographic features alone can approximate the average temporal mobility choice patterns of a given population. Our method and result can serve as the baseline and benchmark for future mobility studies that take the socio-demographics of the traveler population into consideration in modeling.

Moderate Stability among Delay, Probability, and Effort Discounting in Humans

The stability of delay discounting across time has been well-established. However, limited research has examined the stability of probability discounting, and no studies of the stability of effort discounting are available. The present study assessed the steady-state characteristics of delay, probability, and effort discounting tasks across time with hypothetical rewards in humans, as well as whether response characteristics suggested a common discounting equation. Participants completed delay, probability, and effort discounting tasks on three occasions. We found moderate relative stability of delay and probability tasks, and similar evidence for absolute stability across time for all tasks. The interclass correlations coefficient showed some correspondence across time points and tasks, and higher levels of between subject variability, especially for the effort discounting task, suggesting trait level variables has a stronger influence on performance than state level variables. Performance on the delay and probability tasks were moderately correlated and similar mathematical functions fit choice patterns on both tasks (hyperbolic), suggesting that delay and probability discounting processes shared some common elements. Lower correlations and different function fits suggested that effort discounting involves more unique features.

Building representations of the social world: Children extract patterns from social choices to reason about multi-group hierarchies.

How do children learn about the structure of the social world? We tested whether children would extract patterns from an agent's social choices to make inferences about multiple groups' relative social standing. In Experiment 1, 4- to 6-year-old children (N=36; tested in Central New York) saw an agent and three groups (Group-A, Group-B, and Group-C) and observed the agent choose between pairs of individuals from different groups. Across pairwise selections, a pattern emerged: The agent chose individuals from Group-A>Group-B>Group-C. Children tracked the agent's choices to predict that Group-A was "most-preferred" and the "leader" and that Group-C was "least-preferred" and the "helper." In Experiments 2 and 3, we examined children's reasoning about a more complex pattern involving four groups and tested a wider age range. In Experiment 2, 5- to 10-year-old children (N=98; tested in Central New York) used the agent's pattern of pairwise choices to infer that the agent liked Group-A>Group-B>Group-C>Group-D and to make predictions about which groups were likely to be "leaders" and "helpers." In Experiment 3, we found evidence for social specificity in children's reasoning: 5- to 10-year-old children (N=96; from 26 US States) made inferences about groups' relative social but not physical power from the agent's pattern of affiliative choices across the four groups. These findings showcase a mechanism through which children may learn about societal-level hierarchies through the patterns they observe over time in people's group-based social choices. RESEARCH HIGHLIGHTS: Children in our sample extracted patterns from an agent's positive social choices between multiple groups to reason about groups' relative social standing. Children used the pattern of an agent's positive social choices to guide their reasoning about which groups were likely to be "leaders" and "helpers" in a fictional town. The pattern that emerged in an agent's choices of friends shaped children's thinking about groups' relative social but not physical power. Children tracked social choices to reason about group-based hierarchies at the individual level (which groups an agent prefers) and societal level (which groups are privileged).

Associations between testing and treatment pathways in lesional temporal or extratemporal epilepsy: A census survey of NAEC center directors.

The evaluation to determine candidacy and treatment for epilepsy surgery in persons with drug-resistant epilepsy (DRE) is not uniform. Many non-invasive and invasive tests are available to ascertain an appropriate treatment strategy. This study examines expert response to clinical vignettes of magnetic resonance imaging (MRI)-positive lesional focal cortical dysplasia in both temporal and extratemporal epilepsy to identify associations in evaluations and treatment choice. We analyzed annual report data and a supplemental epilepsy practice survey reported in 2020 from 206 adult and 136 pediatric epilepsy center directors in the United States. Non-invasive and invasive testing and surgical treatment strategies were compiled for the two scenarios. We used chi-square tests to compare testing utilization between the two scenarios. Multivariable logistic regression modeling was performed to assess associations between variables. The supplemental survey response rate was 100% with 342 responses included in the analyses. Differing testing and treatment approaches were noted between the temporal and extratemporal scenarios such as chronic invasive monitoring selected in 60% of the temporal scenario versus 93% of the extratemporal scenario. Open resection was the most common treatment choice; however, overall treatment choices varied significantly (p < .001). Associations between non-invasive testing, invasive testing, and treatment choices were present in both scenarios. For example, in the temporal scenario stereo-electroencephalography (SEEG) was more commonly associated with fluorodeoxyglucose-positron emission tomography (FDG-PET) (odds ratio [OR] 1.85; 95% confidence interval [CI] 1.06-3.29; p=.033), magnetoencephalography (MEG) (OR 2.90; 95% CI 1.60-5.28; p=<.001), high density (HD) EEG (OR 2.80; 95% CI 1.27-6.24; p=.011), functional MRI (fMRI) (OR 2.17; 95% CI 1.19-4.10; p=.014), and Wada (OR 2.16; 95% CI 1.28-3.66; p=.004). In the extratemporal scenario, choosing SEEG was associated with increased odds of neuromodulation over open resection (OR 3.13; 95% CI 1.24-7.89; p=.016). In clinical vignettes of temporal and extratemporal lesional DRE, epilepsy center directors displayed varying patterns of non-invasive testing, invasive testing, and treatment choices. Differences in practice underscore the need for comparative trials for the surgical management of DRE.

Commodity discounting: Obstacles and solutions.

Developing effective commodity discounting tasks is critical for assessing how delay (and other variables) influences choice with respect to meaningful real-world commodities (e.g., high-calorie foods, alcohol, opioids, and other drugs). Identifying the obstacles specific to nonmonetary commodity discounting and evaluating solutions to those obstacles. Those obstacles include (1) real versus hypothetical commodities, (2) framing, (3) commodity indivisibility, (4) diminishing marginal utility, and (5) variations in economic context. Solutions are presented and evaluated for each of these five obstacles, including the following: (1) assessing relevant experiences and explicitly stipulating transportation and storage issues, (2) systematic analyses across various wordings and holding wording constant across commodities, (3) using an adjusting delay procedure with only whole commodities, (4) assessing value for different commodity amounts (without delay) and adopting quantitative models of discounting that include marginal utility, and (5) controlling for motivating operations, accounting for individual histories, and using closed economies. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Writing in German as a foreign language in Norwegian upper sec-ondary school: An investigation of patterns of language choices for meaning-making

The main objective of this article is to identify and describe characteristic patterns of language choices in texts written by Norwegian upper secondary school students of German as a foreign language (GFL) (age 16/17, school year 12, 5th year of FL learning). The study maps language choices in a set of 12 learner responses to a writing prompt about interpreting a film title. The aim of the study is to describe these choices in terms of how the learners use ideational meaning-making resources to arrive at meaningful content. The study takes a systemic functional linguistics (SFL) approach and analyses the responses in terms of the following lexicogrammatical and discourse semantic systems of resources: Transitivity, taxonomic and logico-semantic relations. The study finds several strategies and language choices that presented themselves as particularly relevant for meaning-making. For example, the learners reach an interpretation through clauses relating two messages to each other, and one of those two messages is typically structured in a complex way. Overall, the study provides insights into relevant patterns for expository writing in general and such that seem important to the particular context in which the response was situated. The article also points to the sophistication of the learners’ language use and the linguistic demands regarding the task at hand. In line with existing research, the current study also shows how SFL and genre theory can be successfully applied to the analysis of responses by beginner to intermediate GFL learners.

Joint Optimization of Facility Layout and Spatially Differential Parking Pricing for Parking Lots

The parking cruising problem can be attributed to the unbalanced spatial parking space occupancy in the parking lot with multiple trip purposes and high traffic volumes, and it has already become an obstacle to improving travel efficiency. This study aims to investigate the reasons for the unbalanced occupancy of parking spaces and develop strategies to achieve spatial equilibrium by reducing parking cruising time. A field survey is first conducted to analyze the factors influencing parking space choice behavior, such as searching distances, walking distances, parking price, and parkers’ attributes. Based on the survey, a mixed logit model is calibrated to reveal parking space choice patterns of different parkers. Afterwards, the parking lot is divided into three zones based on searching distances and walking distances, using the K-means algorithm. According to the results, a simulation-based optimization model is then established, for minimizing the variance of average occupancy. An optimal pricing strategy is obtained at last. A case study in Nanjing, China, is conducted to verify the feasibility and rationality of the proposed method. The difference between weekdays and weekends is explored. The results show that, with the optimal strategies, the standard deviation of average occupancy in each zone decreases by 39.52% during weekends and 42.29% during weekdays. Finally, political implications and recommendations on the layout design of facilities and the adoption of differential parking pricing strategies are provided.

Reliability of the traffic network against cascading failures with individuals acting independently or collectively

The domino-like cascading failures may deteriorate traffic network reliability for both system and users. As the microscopic origin of this dynamic process, route choice behavior should be essential for the pattern of reliability against cascading failures, but the mechanism has not been systematically investigated. To uncover this, we propose a two-level cascading failure model to observe route choice patterns during the evolution of traffic jams: (i) the upper-level depicts how cascading failures spread out in network topologies, while (ii) the lower-level models what paths travelers may select in the trade-off between user equilibrium (UE) and system optimum (SO). Given nearly-one million OD pairs on large-scale traffic networks, the influence mechanisms of four factors on two reliability indicators are explored. We find that under certain perturbations, staying at the identified critical tolerance is the most profitable for investment yet unstable for reliability. Surprisingly, phase transition patterns are found in different topologies of traffic networks, where the lattice network is the most unreliable. Network reliability is found to increase by modifying travelers’ route choices from independent UE toward collective SO, whereas, the reliability is found to decrease if travelers have stochastic perception errors of travel time or have risk preferences to probabilistic travel time. Furthermore, if the overload failures can be recovered from the failed states, a traffic network may become more reliable. Our finding may help to improve reliability management of future transportation with multiple states between UE and SO.

D2/3 Agonist during Learning Potentiates Cued Risky Choice.

Impulse control and/or gambling disorders can be triggered by dopamine agonist therapies used to treat Parkinson's disease, but the cognitive and neurobiological mechanisms underlying these adverse effects are unknown. Recent data show that adding win-paired sound and light cues to the rat gambling task (rGT) potentiates risky decision-making and impulsivity via the dopamine system, and that changing dopaminergic tone has a greater influence on behavior while subjects are learning task contingencies. Dopamine agonist therapy may therefore be potentiating risk-taking by amplifying the behavioral impact of gambling-related cues on novel behavior. Here, we show that ropinirole treatment in male rats transiently increased motor impulsivity but robustly and progressively increased choice of the high-risk/high-reward options when administered during acquisition of the cued but not uncued rGT. Early in training, ropinirole increased win-stay behavior after large unlikely wins on the cued rGT, indicative of enhanced model-free learning, which mediated the drug's effect on later risk preference. Ex vivo cFos imaging showed that both chronic ropinirole and the addition of win-paired cues suppressed the activity of dopaminergic midbrain neurons. The ratio of midbrain:prefrontal cFos+ neurons was lower in animals with suboptimal choice patterns and tended to predict risk preference across all rats. Network analyses further suggested that ropinirole induced decoupling of the dopaminergic cells of the VTA and nucleus accumbens but only when win-paired cues were present. Frontostriatal activity uninformed by the endogenous dopaminergic teaching signal therefore appeared to perpetuate risky choice, and ropinirole exaggerated this disconnect in synergy with reward-paired cues.SIGNIFICANCE STATEMENT D2/3 receptor agonists, used to treat Parkinson's disease, can cause gambling disorder through an unknown mechanism. Ropinirole increased risky decision-making in rats, but only when wins were paired with casino-inspired sounds and lights. This was mediated by increased win-stay behavior after large unlikely wins early in learning, indicating enhanced model-free learning. cFos imaging showed that ropinirole suppressed activity of midbrain dopamine neurons, an effect that was mimicked by the addition of win-paired cues. The degree of risky choice rats exhibited was uniquely predicted by the ratio of midbrain dopamine:PFC activity. Depriving the PFC of the endogenous dopaminergic teaching signal may therefore drive risky decision-making on-task, and ropinirole acts synergistically with win-paired cues to amplify this.

Parasocijalna komunikacija na društvenim mrežama - studija slučaja Novaka Đokovića i njegovih pratilaca

The paper deals with the presentation and analysis of parasocial communications using relevant communication theories and the psychology of media, communications and relationships, because new patterns of choice in communication processes have changed the way an individual enters into social relationships - from given (imposed) to chosen. The approach is expanded with a practical aspect - research into the parasocial communication of Novak Đoković and his followers on the official Facebook page of our tennis player. The period during Roland Garros 2022 was taken for two reasons: it is one of the most important tournaments and the first big one after the break caused by refusing to be vaccinated against Covid/19 virus, which is why Đoković did not participate in two of the four biggest tournaments before that year, and that at the same time he defended the position of the first player on the ATP list, which is why the engagement of followers was more intense than average. The approach is extended with a practical aspect - research into the parasocial communication of Novak Đoković and his followers on his official Facebook page. The ways in which Đoković addresses his fans and the content of his posts on Facebook encourage the development of a sense of closeness and familiarity among the audience. The research proved that parasocial interaction is realized in virtual communication in which Novak Đoković's followers use the opportunity to address him through Facebook and often expect a return reaction. Social networks thus realize their procreative function, which is manifested in parasocial interaction through the exchange of messages, participation, togetherness and feedback simulation. Parasocial relationships are characterized by nonreciprocity, i.e. the fact that only one party knows a lot about the other, while the reverse is not true.

PEMILIHAN BAHASA DALAM CERAMAH AGAMA ISLAM DI TEMBILAHAN, RIAU

Tembilahan is the capital of the Indragiri Hilir regency in Riau and is nicknamed a worship city because of the Islamic influence brought by the ulama from South Borneo. Its community consists of various ethnic groups, such as Banjar, Malay, Buginese, Javanese, Minangkabau, and others, with the majority adherents of Islam. This diversity raises problems regarding the choice of language in the religious setting. This paper examines language choice patterns and the factors that determine the choice of languages. The data are drawn by using document analysis and the introspection method. The ethnography of communication approach was used to analyze the data. It reveals that five languages were used (Indonesian, Arabic, Banjar, Riau Malay Coastal dialect, and Javanese) by applying code-switching and code-mixing, thus forming nine patterns of language choice. The factors that determine the choice of those languages are ethnic and language background, the speaker's language competence, the speech's situation, and the speaker's purposes. The purposes of language choice are to emphasize, teach, respect, give an example, pray, quote Al-Quran and Hadith, praise Allah, quote others' statements, and humour. The conclusion is Banjar language is used as the dominant language. Even though there is still no found language use with a single variation in the Islamic sermons in Tembilahan, it shows that the Tembilahan community is classified as a multilingual society that can use more than one language.

The effect of preference learning on context effects in multi-alternative, multi-attribute choice

Within the domain of preferential choice, it has long been thought that context effects, such as the attraction and compromise effects, arise due to the constructive nature of preferences and thus should not emerge when preferences are stable. We examined this hypothesis with a series of experiments where participants had the opportunity to experience selected alternatives and develop more enduring preferences. In our tasks, the options are presented in a description-based format so that participants need only learn their preferences for various options rather than the objective values of those options. Our results suggest that context effects can still emerge when stable preferences form through experience. This suggests that multi-alternative, multi-attribute decisions are likely influenced by relative evaluations, even when participants have the opportunity to experience options and learn their preferences. We hypothesize what was learned from experience in our tasks is the weights for various attributes. Through model simulations, we show that the observed choice patterns are well captured by a model with unequal attribute weights. A secondary finding is that the direction of observed context effects is opposite to standard effects and appears to be quite robust. Model simulations show that reserved effects can arise through various processes including representational noise and sensitivity to advantages and disadvantages when comparing options.

Examining landowners' preferences for a chronic wasting disease management program

AbstractPrivate landowners are key partners in chronic wasting disease (CWD) management, especially in landscapes where there is limited public ownership. In this study, we evaluated landowners' preferences for alternative hypothetical CWD management programs using a stated choice experiment. We were particularly interested in understanding preferences for the use of financial incentives to motivate white‐tailed deer harvest and facilitate hunter access to private lands as potential CWD management tools. We used latent class analysis to characterize preference heterogeneity among landowners stemming from patterns of choice. We compared means and distributions of auxiliary variables related to landowners' perceived risks, trust, attitudes toward management, and sociodemographics across latent classes stemming from choice model results. The pooled model demonstrated that reducing deer population density, providing payments to landowners for CWD‐positive deer taken from their property, the form of incentives for public access, and banning recreational deer feeding had a small positive effect on respondents' choice of CWD management program. However, providing financial payments to hunters for harvesting CWD‐positive deer and the use of targeted culling had the opposite effect on choice. Latent class models revealed that a majority of respondents exhibited a pattern of preference where all forms of incentives exerted a negative effect on choice, but smaller subsets of landowners positively evaluate the use of some incentives. Post‐hoc contrasts revealed relationships between patterns of preferences and trust, risk, and attitudes toward CWD management with small to medium effects. Results demonstrated limited support for the use of financial incentives as a tool to manage access and harvest in the southeast Minnesota CWD management zone.

Pattern-setting for improving risky decision-making.

Self-control can be defined as making choices in accordance with long-term, rather than short-term, patterns of behavior. Rachlin (2016) suggested a novel technique to enhance self-control, by which individual choices carry the weight of a larger pattern of choices. This report describes a study of 169 college students who made repeated choices between two gambles. The better of the two gambles had a greater win probability but required waiting an uncertain amount of time. Some "patterned" subjects were forced to repeat their previous choices according to a schedule, while control subjects could choose freely on every trial. It was found that on free-choice trials, the patterned subjects chose the better gamble more often than controls. There was stronger evidence for such an effect appearing immediately than for it developing gradually from a process of learning over the course of the task. An additional condition in which subjects were forced to choose the better gamble yielded inconsistent results. Overall, the results support the use of pattern-setting as a strategy to improve decision-making.

Gender Differences in Online Identity: A Linguistic Contrastive Study of Arabic and English Screen Names in the Saudi Context

The considerations behind choosing pseudonyms over the real name may be varied depending upon extraneous or intrinsic circumstances including the need to circumvent social norms, taboos, and practices. However, one that transcends these bounds is the affordance of freedom to act natural that comes with adopting a pseudonym which masks one’s true identity. The vast choice of media for social expression in the age of technology has added a new dimension to the practice of adopting pseudonyms. Accordingly, this study investigates whether patterns of screen name choice and typology are discernible among Saudi male and female students. The study created a database of two hundred screen names selected from the forums of foundation year at two Saudi universities (male =100 and female =100). The screen names gained are classified and examined based on the attraction theories’ framework. As far as findings are concerned, the choice and typology of screen names according to the type of gender are significant. The screen names are varied whether the gender is male or female. Findings also show that the "real names" category is applied by female students in screen names more than male students whereas "unreal names" category is applied more by male students than the females. For fictional names, both male and female students prefer to use romantic names and neglected names which show wealth or looks. Three new categories in pseudonyms are found and established in the study i.e., popular, romantic, and real names due to the Saudi contextual variation. A significant effect of choosing the screen names on the names of their devices is also found in the study.

Treatment Outcomes for Rheumatoid Arthritis-Associated Interstitial Lung Disease: A Real-World, Multisite Study of the Impact of Immunosuppression on Pulmonary Function Trajectory

Rheumatoid arthritis (RA)-associated interstitial lung disease (ILD) is common in patients with RA and leads to significant morbidity and mortality. No randomized, placebo-controlled data are available that support the role of immunosuppression to treat RA-associated ILD, despite being widely used in clinical practice. How does immunosuppression impact pulmonary function trajectory in a multisite retrospective cohort of patients with RA-associated ILD? Patients with RA who started treatment for ILD with mycophenolate, azathioprine, or rituximab were identified retrospectively from five ILD centers. Change in lung function before and after treatment was analyzed using a linear spline mixed-effect model with random intercept. Prespecified secondary analyses examined the impact of radiologic pattern of ILD (ie, usual interstitial pneumonia [UIP] vsnon-UIP) on treatment trajectory. Two hundred twelve patients were included in the analysis: 92 patients (43.4%) were treated with azathioprine, 77 patients (36.3%) were treated with mycophenolate mofetil, and 43 patients (20.3%) were treated with rituximab. In the combined analysis of all three agents, an improvement in FVC %predicted was found after 12months of treatment compared with the potential 12-month response without treatment (+3.90%; P≤ .001; 95%CI, 1.95-5.84). Diffusing capacity of the lungs for carbon monoxide (Dlco) %predicted also improved at 12months (+4.53%; P≤ .001; 95%CI, 2.12-6.94). Neither the UIP pattern of ILD nor choice of immunosuppressive agent significantly impacted the pulmonary function trajectory on immunosuppression. Immunosuppression was associated with an improved trajectory in FVC and Dlco compared with the pretreatment pulmonary function trajectory. Prospective, randomized trials are required to validate these findings.

Consumer Embeddedness and Motivations for Farmers Market Patronage: A Qualitative Exploration in Minnesota, USA

The rise in popularity of farmers markets in the United States reflects consumers’ negative response to more traditional food distribution systems. Farmers markets provide consumers with a more local and often more personal food purchasing experience. The purpose of this study was to examine consumer motivations to patronize farmers markets through the lens of social, spatial, and natural embeddedness. A qualitative approach was employed utilizing semi-structured, in-depth interviews. These interviews were conducted in person using a set of predetermined questions and revealed nine themes. The findings indicate that two types of consumer choices with different properties exist in farmers market patronage (e.g., the choice of a particular farmers market vs. the choice of a particular vendor at the market). Inconsistency occurs in consumer choice patterns (e.g., economic saving does not greatly affect the choice to shop at a particular farmers market but can determine whom to buy from once at the market), implying that situational dynamics play a critical role at the point of purchase. While this study supports the usefulness of embeddedness as a conceptual framework for understanding farmers’ market patronage, it demonstrates a distinction between motivation to patronize the market and shopping behaviors exhibited once there.

Death by 1000 ‘true fans’: Do marketing laws apply to music listening?

AbstractThe advice to musicians and marketers is to focus on what they love: a truism for practitioners is to find 1000 ‘true fans’ and make $100 from each of them (Kelly, 2008.1000 True fans. The Technium). If this advice is correct, we should see musicians with loyal user bases engaging more with their favourite artists and less with other music, suggesting a narrow targeting strategy would suffice. On the other hand, the established marketing laws indicate that the listeners of very different genres should overlap more than conventional wisdom would suggest, supporting the need for a much broader approach to targeting potential audiences. Given these conflicting views, musicians need to know if they should market to their existing listeners, the listeners of music similar to theirs (i.e., the same genre), or if they should try to reach a much wider audience. We turn to established choice patterns from the marketing literature to address these questions in the music context. This study examines 84,000,000 observations of music listening from 27,000 unique global users between 2013 and 2014 and survey data from 2019 containing music listening from over 1000 representative respondents in the United States. The results show that listening follows the Duplication of Purchase law for genres, artists, albums, and songs, at an annual, 6‐months, 3‐months, 1‐month, and 1‐week period, with no indication of partitioned music listening. The implication is that musicians should try to reachallpotential listeners, regardless of what they already listen to. These findings contribute to the theoretical knowledge about duplication analyses of various durations, extend the contexts of choice behaviour that exhibit this pattern, and managerially, to knowledge about the extent of potential audiences and ‘share of ear’ competition.

Physical environment, species choice and spatio-temporal patterns of urban roadside trees in Hong Kong

Trees in the urban environment are affected by a range of place-specific environmental and cultural factors. Nevertheless, many factors interact with each other and produce high variabilities in urban forest structures, spatial configurations, and growing conditions within the urban fabric. The variabilities and relationships among these factors require a modelling framework that incorporates variables related to the spatio-temporal information of individual trees and site characteristics. Using roadside trees in a residential district in Hong Kong, this study examined their species compositions and spatial distributions among zones with various development histories. Structural equation modelling was applied to investigate the interactions among variables concerning the physical environment, temporal changes, species selection, spatial patterns, and tree sizes. A few abundant species dominated the urban forest, with uneven distributions of roadside tree densities and species-specific clusters found within the study area. The empirical results showed (i) the physical environment influenced the existence of roadside trees, the occurrence of specific species and tree growth; (ii) species selection mediated the influences of the physical environment on tree sizes and spatial patterns; (iii) despite the linkage between existing tree patterns and development histories, replacement plantings further modified the compositions and reflected a shift in preferences; (iv) the proximity to nearby urban structures and the spatial properties among planting locations were important factors in spatial planning. Hence, urban forest managers play a crucial role in mediating the interactions among physical drivers, planting histories, and tree performances. It is recommended that species diversity, especially native trees, should be promoted within the study area, while planting strategies matching site dimensions, species and attainable sizes should also be prioritised. By generalising the relative effects that determined the existing patterns of urban forests, the modelling framework can provide a strategic reference for target-oriented tree management in Hong Kong and other cities.