Compounds (e.g., jellybeans) and list forms (e.g., jelly, beans) can be distinguished by the presence or absence of boundaries, marked by durational and pitch cues. Studies have shown that 5-year-olds learning English have acquired both cues for distinguishing compounds and lists. However, it is not clear how and when this ability is acquired by children speaking tonal languages, such as Mandarin. This study examined whether Mandarin-speaking preschoolers can use durational and pitch cues to distinguish compounds and lists and whether their productions are adult-like. Thirty-one 4-year-olds, 34 5-year-olds, 29 6-year-olds, and 43 adults participated in an elicited production experiment. Results showed that similar to English-speaking preschoolers, Mandarin-speaking preschoolers can use durational cues to mark boundaries, triggering appropriate pitch changes for distinguishing compounds and lists, though these were not fully adult-like, even in the oldest age group.

This research investigates the tone system of an understudied language, Du’an Zhuang and its interaction with duration. Cross-linguistically, tones tend to be less complex in shorter duration contexts. In Du’an Zhuang, syllable type provides these contexts: There are six contrastive tones among unchecked syllables with longer rhyme duration, but this is reduced to four tones in shorter duration checked syllables. Acoustic analyses of f0 and duration from six native speakers were performed to check whether tonal complexity is reduced in the shorter duration checked syllables. The results showed this was true with some exceptions. The two tones in CVVO syllables corresponded to the two least complex tones; however, one of the two CVO tones included a more complex rising tone. This rising tone exhibited a reduced f0 excursion though. Finally, there is a two-way phonological vowel length contrast in Du’an Zhuang, which necessarily interacts with syllable type via its effect on rhyme duration. However, based on our vowel duration measurements, this vowel length contrast only exists in unchecked syllables with sonorant codas, the only syllable type where rhyme duration and vowel duration could possibly differ. In this context, a sonorant coda contributes to the syllable’s rhyme duration, but not to vowel duration, allowing syllable type and vowel length to contrast independently, only in this phonological context.

What determines why some protest events last only a single day while others can stretch over multiple days? This study presents the first cross-national quantitative analysis of the factors that shape protest event duration. This study argues that protest event duration is the function of factors that increase momentum (e.g. protest size, location and participants) while also examining whether repression attenuates such momentum. Using the Armed Conflict Location Event Data, this study employs two multilevel statistical methods to examine the factors that matter. First, the study examines the day-by-day factors that shape whether a protest will continue the next day. Second, the study examines the overall duration of events. The analyses find strong support that protests in capitals and urban areas, as well as protests featuring students, labour unions and professional organizations, last longer, while repression does truncate events.

Stevens’ power law for the judgments of sensation has a long history in psychology and is used in many psychophysical investigations of the effects of predictors such as group or condition. Stevens’ formulation $\mathit{\Psi }={aP}^n$\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\varPsi = {aP}^{n}$$\end{document}, where $\mathit{\Psi }$\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\varPsi $$\end{document} is the psychological judgment, P is the physical intensity, and $n$\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$n$$\end{document} is the power law exponent, is usually tested by plotting log $(\mathit{\Psi })$\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$(\varPsi )$$\end{document} against log (P). In some, but by no means all, studies, effects on the scale parameter, $a$\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$a$$\end{document}, are also investigated. This two-parameter model is simple but known to be flawed, for at least some modalities. Specifically, three-parameter functions that include a threshold parameter produce a better fit for many data sets. In addition, direct non-linear computation of power laws often fit better than regressions of log-transformed variables. However, such potentially flawed methods continue to be used because of assumptions that the approximations are “close enough” as to not to make any difference to the conclusions drawn (or possibly through ignorance the errors in these assumptions). We investigate two modalities in detail: duration and roughness. We show that a three-parameter power law is the best fitting of several plausible models. Comparison between this model and the prevalent two parameter version of Stevens’ power law shows significant differences for the parameter estimates with at least medium effect sizes for duration.

Childhood maltreatment (CM) deeply impacts victims’ social competences. The aim of the present study was to investigate the effect that CM duration exerts on victims’ affective and social development testing three different impact trajectories (i.e., linear, logarithmic and quadratic) and its physiological (facial mimicry and autonomic regulation of the heart) and behavioral (percentage of anger recognition false alarm) markers. In a cross-sectional design, 73 Sierra Leonean youths (all males, 5–17 years old) were enrolled in the study. Of those, 36 were homeless all abandoned at the age of 4 and exposed to CM, whereas 37 were controls. Only physiological markers of affective development were influenced by CM duration. A quadratic relation between the autonomic regulation recorded at rest and CM duration was found, indicating initial physiological compensation followed by progressive autonomic withdrawal. Furthermore, CM duration was associated to a specific linear decrease of facial mimicry and vagal regulation in response to angry and sad facial expressions whereas no influences were detected for happy and fearful faces. The results of the present study provide insightful clues on victims’ natural patterns of resilience, deterioration, and chronicity, allowing a deeper comprehension of the developmental pathways through which early life adversities place youths on a track of lifelong health disparities.

In this article, we experiment with a form of dark pedagogy, a pedagogy that confronts haunting pasts∼presents∼futures in environmental education. We offer a conceptualisation of ghosts that enables us to creatively explore the duration of things and consider the relationality of time. We examine this through two situated contexts, engaging with entangled, yet differentiated, socioecological issues. The first issue involves the cascading impacts of climate change on the Australian Alps, including intensifying bushfires and threats to the iconic snow gum. The second issue involves the reordering of human/animal relations through processes of settler colonialism that continue to transform land into a commodity, with a significant cultural and material consequence of such colonial harm resulting in the extermination of free-ranging bison herds in the Canadian prairies. Both are unique issues, but both involve impacts of colonisation, loss and natural-cultural hegemony. The dark elements of these Place-specific stories involve noticing and confronting loss and related injustices. In our case, we diffract such confrontations by thinking through these challenging issues and working towards ethical ways of living and learning. In this article, we (re)member ghosts and ponder practices for fostering anticolonial response-abilities and affirmative human/Earth futures.

Prosodic realization of focus has been a widely investigated topic across languages and modalities. Simultaneous focus strategies are intriguing to see how they interact regarding their functional and temporal alignment. We explored the multichannel (manual and nonmanual) realization of focus in Turkish Sign Language. We elicited data with focus type, syntactic roles and movement type variables from 20 signers. The results revealed the focus is encoded via increased duration in manual signs, and nonmanuals do not necessarily accompany focused signs. With a multichanneled structure, sign languages use two available channels or opt for one to express focushood.

Copulas are helpful in studying joint distributions of two variables, in particular, when confounders are unobserved. However, most conventional copulas cannot model joint distributions where one variable does not increase or decrease in the other in a monotonic manner. For instance, suppose that two variables are linearly positively correlated for one type of unit and negatively for another type of unit. If the type is unobserved, we can observe only a mixture of both types. Seemingly, one variable tends to take either a high or low value (or a middle value) when the other variable is small (large), or vice versa. To address this issue, I consider an overlooked copula with trigonometric functions (Chesneau [2021, Applied Mathematics, 1(1), pp. 3–17]) that I name the “normal mode copula.” I apply the copula to a dataset about government formation and duration to demonstrate that the normal mode copula has better performance than other conventional copulas.

In this paper, we investigate the prosodic realization of stress and focus in Udmurt (Uralic, Permic). According to the literature, Udmurt has fixed final stress, but also has several sets of morphosyntactic exceptions with initial stress. We report the results of two production studies. The first one targets nominals with final stress, and the second one investigates the stress properties of minimal pairs consisting of (i) indicative verbs (prs.3sg; final stress) and (ii) imperative verbs (imp.2sg/pl; initial stress). To control for the information-structural contexts, the test words are studied in contexts that elicit narrow focus either on the test word (‘F’ condition) or on another constituent (‘non-F’ condition). The results show that all four acoustic parameters surveyed in the paper – duration, intensity, fundamental frequency (f0), and first formant (F1) values – participate in stress marking in Udmurt. The results for focus marking vary by study and demonstrate that all cues except for intensity may be involved in focus marking. At the same time, we find wide interspeaker variation with respect to the acoustic cues marking stress and/or focus. Finally, we outline a preliminary Autosegmental-Metrical interpretation of our f0 results; a full account of Udmurt intonation awaits further research.

Attention to the welfare of animals during slaughter transport and lairage at the abattoir is important not only to consumers, but also to the meat production industry. Inadequate transport conditions can result in higher animal mortalities and meat quality problems after slaughter of such animals. In the present study the development of mortality rates both during and after the transport of slaughter pigs, and the incidence of pathological findings, was investigated. It could be shown that the percentage of animals which died during transport and in lairage clearly decreased between 1999 and 2003. This improvement was due mainly to the reduction of animal losses in the summer season where the highest losses over the investigated years occurred. Considering the duration of the transport it could be shown that not only very long (8 h), but also short journeys (1 h) can affect the welfare of animals with increased mortalities and pathological findings during the veterinary inspection at the slaughterhouse, particularly in the summer season. The results presented indicate that the tightening of European animal welfare legislation concerning loading, transport, unloading and lairage of slaughter pigs improved mortality rates and the incidence of pathological findings. Another reason could be a reduction of the percentage of stress susceptible pigs in the porcine population. However, until now the regulations on animal welfare during pig slaughter transport focused only on long-term journeys; the results presented show that short journeys can also affect the welfare of the animals.