Elal Cycle

As plains dwellers, the Tehuelche were hardy drifters who wandered across the barren steppe dressed in the skins of the guanaco, the pretty, rust-coloured relative of the llama that inhabits the southern reaches of the Americas. The Tehuelche creation story is known as the Elal Cycle, after a heroic man-god who arrives in Patagonia from a “Big Island” on the back of a swan

The Politics of Drug Courts

This study examined drug courts from a public policy and political science perspective. The first portion of the study focused on the history of sentencing policy from the 1970s through the drug court movement. The second chapter addressed gaps in the policy literature about how drug courts were created and how they evolved. Another focal point was determining how state-level actors such as legislators, state supreme courts, and bureaucratic agencies regulated drug court policy in each particular state. From this data, a continuum was formed to determine which states operated from a top-down management style for drug courts and which states operated from a bottom-up management style. This data allowed me to empirically test whether certain political science, criminal justice, and structure variables could account for the amount of state-level regulation into drug court policy. Partisan politics was associated with the amount of state-level regulation into drug court policy, and method of judicial selection was weakly associated with the amount of state-level regulation. In the final empirical chapter, drug courts from a bottom-up management state and a top-down management state were selected for case study analyses. Members of drug court teams were interviewed to determine the similarities and differences between the two disparate styles of management. Members of the drug courts teams members who had not received as much scholarly attention were also interviewed such as treatment counselors, prosecutors, defense attorneys, and members of law enforcement to share their views on drug courts and describe their official duties. Finally, in light of the current opioid epidemic, members of the drug courts discussed how heroin and prescription pain killers are affecting their counties and what the drug courts and other entities can do to alleviate this problem

Too many cooks?: changing wages and job ladders in the food industry

Consolidation and outsourcing in the food industry have created higher-paying food prep jobs, but also have erected barriers for lower-skilled workers trying to move up the ladder.Food industry and trade

Particle production and reheating in the inflationary universe

Thermal field theory is applied to particle production rates in inflationary models, leading to new results for catalysed, or two-stage decay, where massive fields act as decay channels for the production of light fields. A numerical investigation of the Bolztmann equation in an expanding universe shows that the particle distributions produced during small amplitude inflaton oscillations or alongside slowly moving inflaton fields can thermalise.Comment: 16 pages, 12 figures, LaTeX, extra references in v

Density fluctuations from warm inflation

Thermal fluctuations provide the main source of large scale density perturbations in warm inflationary models of the early universe. For the first time, general results are obtained for the power spectrum in the case when the friction coefficient in the inflaton equation of motion depends on temperature. A large increase in the amplitude of perturbations occurs when the friction coefficient increases with temperature. This has to be taken into account when constructing models of warm inflation. New results are also given for the thermal fluctuations in the weak regime of warm inflation when the friction coefficient is relatively small.Comment: 14 pages, 4 figures, ReVTe

Visual preference for social stimuli in individuals with autism or neurodevelopmental disorders : an eye-tracking study

Background Recent research has identified differences in relative attention to competing social versus non-social video stimuli in individuals with autism spectrum disorder (ASD). Whether attentional allocation is influenced by the potential threat of stimuli has yet to be investigated. This is manipulated in the current study by the extent to which the stimuli are moving towards or moving past the viewer. Furthermore, little is known about whether such differences exist across other neurodevelopmental disorders. This study aims to determine if adolescents with ASD demonstrate differences in attentional allocation to competing pairs of social and non-social video stimuli, where the actor or object either moves towards or moves past the viewer, in comparison to individuals without ASD, and to determine if individuals with three genetic syndromes associated with differing social phenotypes demonstrate differences in attentional allocation to the same stimuli. Methods In study 1, adolescents with ASD and control participants were presented with social and non-social video stimuli in two formats (moving towards or moving past the viewer) whilst their eye movements were recorded. This paradigm was then employed with groups of individuals with fragile X, Cornelia de Lange, and Rubinstein-Taybi syndromes who were matched with one another on chronological age, global adaptive behaviour, and verbal adaptive behaviour (study 2). Results Adolescents with ASD demonstrated reduced looking-time to social versus non-social videos only when stimuli were moving towards them. Individuals in the three genetic syndrome groups showed similar looking-time but differences in fixation latency for social stimuli moving towards them. Across both studies, we observed within- and between-group differences in attention to social stimuli that were moving towards versus moving past the viewer. Conclusions Taken together, these results provide strong evidence to suggest differential visual attention to competing social versus non-social video stimuli in populations with clinically relevant, genetically mediated differences in socio-behavioural phenotypes

Lifespan Trajectory of Affect in Cornelia de Lange Syndrome: Towards a Neurobiological Hypothesis

Background Depressive symptomology and low affect are comparatively common in individuals with genetic disorders such as Cornelia de Lange syndrome. However, lifespan trajectories and associated person characteristics have not been examined. In this study, the trajectories for affect and associated behavioural characteristics were investigated in individuals with Cornelia de Lange syndrome with individuals with fragile X syndrome (FXS) comparable for chronological age and total number of behavioural indicators of ASD included for the purpose of contrast. Methods A 7-year longitudinal study of affect (mood, interest and pleasure) was conducted in individuals with CdLS (n = 44) and FXS (n = 95). The trajectories of low affect were explored, as well as associations between Time 1 behavioural characteristics and affect at Time 1 and Time 3 (7 years later). Results The CdLS group were lower in mood than the FXS group overall (p < .001). Interest and pleasure scores showed a significant decline over the lifespan for individuals with CdLS (p < .001) but not the FXS group. Lower level of ability at Time 1 was associated with lower mood at Time 1 and Time 3 in the FXS group only. Higher levels of ASD symptomology at Time 1 were associated with low mood and interest and pleasure in both syndrome groups at Time 1 and Time 3. Greater insistence on sameness at Time 1 was associated with lower mood at Time 1 in the FXS group and lower interest and pleasure at Time 1 and Time 3 in the CdLS group. Conclusions Low affect in specific genetic syndromes may be associated with differing lifespan trajectories and behavioural profiles. Specifically, individuals with CdLS appear at risk for experiencing declines in levels of interest and pleasure whereas individuals with FXS show no significant change in the level of affect with age

Associations between behaviours that challenge in adults with intellectual disability, parent perceptions and parental mental health

Objectives. This study examined parental perceptions of behaviours that challenge (CB) in their adult children with intellectual disability (ID), and explored whether perceptions mediated associations between CB and parental psychological distress. Design. A within-group correlational design was employed. Methods. Sixty-five parents reported on individuals with genetic syndromes and ID who had chronic behaviours that challenge (CB). Parents completed the Illness Perception Questionnaire-Revised (IPQ-R) adapted to measure perceptions of self-injury, aggression or property destruction, alongside assessments of parental locus of control, attributions about behaviour, parental psychological distress, and CB. Results. A high proportion of parents evidenced anxiety and depression at clinically significant levels (56.9% and 30.8%, respectively). Contrary to predictions, psychological distress was not significantly associated with CB. The perception that the adult with ID exerted control over the parent’s life mediated the association between CB and parental psychological distress. Few parents endorsed operant reinforcement as a cause of CB (< 10%). Conclusions. The high levels of psychological distress in parents is notable and of concern. Further research should consider the reasons why parents have causal attributions that might be inconsistent with contemporary interventions. Key words: Adults; parents; attributions; self-regulatory model; challenging behaviour; intellectual disability