Teaching children with autism spectrum disorder to tact auditory stimuli: A replication

It is important that tacts are controlled by stimuli across all senses but teaching tacts to children with autism spectrum disorder (ASD) is often limited to visual stimuli. This study replicated and extended a study on the effects of antecedent-stimulus presentations on the acquisition of auditory tacts. We used a concurrent multiple probe across sets design and an embedded adapted alternating treatments design to evaluate acquisition of auditory tacts when auditory stimuli were presented alone (i.e., isolated) or with corresponding pictures (i.e., compound-with-known and compound-with-unknown) with two school-aged boys with ASD. Both participants' responding met the mastery criterion no matter the stimulus presentation with at least one set, but one participant failed to acquire one set of stimuli in the isolated condition. The isolated condition was rarely the most efficient. We conducted post-training stimulus-control probes, and we observed disrupted stimulus control in the isolated condition for one participant. Implications for arranging auditory tacts instruction are discussed.     

An EMG-driven musculoskeletal model of the shoulder

This paper aims to develop an EMG-driven model of the shoulder that can consider possible muscle co-contractions. A musculoskeletal shoulder model (the original model) is modified such that measured EMGs can be used as model-inputs (the EMG-driven model). The model is validated by using the in-vivo measured glenohumeral-joint reaction forces (GH-JRFs). Three patients carrying instrumented hemi-arthroplasty were asked to perform arm abduction and forward-flexion up to maximum possible elevation, during which motion data, EMG, and in-vivo GH-JRF were measured. The measured EMGs were normalized and together with analyzed motions served as model inputs to estimate the GH-JRF. All possible combinations of input EMGs ranging from a single signal to all EMG signals together were tested. The 'best solution' was defined as the combination of EMGs which yielded the closest match between the model and the experiments. Two types of inconsistencies between the original model and the measurements were observed including a general GH-JRF underestimation and a GH-JRF drop above 90° elevation. Both inconsistencies appeared to be related to co-contraction since inclusion of EMGs could significantly (p<.05) improve the predicted GH-JRF (up to 45%). The developed model has shown the potential to successfully take the existent muscle co-contractions of patients into account.     

The harmony of grounding

Philosophical Studies - Mereological harmony is the idea that the mereological structure of objects mirrors the mereological structure of locations. Grounding harmony is the idea that there is a...     

Prudence and Person-Stages

Persons care about their future selves. They reason about their future selves’ interests; they plan for their future selves’ happiness and they worry about their future selves’ suffering. This paper is interested in the interplay between diachronic prudential reason and certain accounts of the metaphysics of personal identity that fall under the broad umbrella ‘conventionalist’. Some conventionalists conclude that under certain conditions there are intractable decisions for there is no fact of the matter regarding whether a person-stage ought (prudentially) to φ. This paper suggests otherwise. These decisions are not intractable if we allow that it is sometimes rational for a person-stage to discount the utility of certain future person-stages. The paper then goes on to explore an alternative position that conventionalists might occupy which does not involve any such discounting: prudential relativism. According to prudential relativism, it is impossible to offer a single, correct, answer to the question: should person-stage, P, φ at t? For according to prudential relativism there is no stage-independent stance from which to evaluate whether a person-stage ought to φ. Yet it is not, for all that, intractable, from P’s perspective, whether or not to φ.     

Associations of perceived stress and state anger with symptom burden and functional status in patients with heart failure

Abstract

Background: Psychosocial stress and anger trigger cardiovascular events, but their relationship to heart failure (HF) exacerbations is unclear. We investigated perceived stress and anger associations with HF functional status and symptoms.

Methods and Results: In a prospective cohort study (BETRHEART), 144 patients with HF (77% male; 57.5?±?11.5 years) were evaluated for perceived stress (Perceived Stress Scale; PSS) and state anger (STAXI) at baseline and every 2 weeks for 3 months. Objective functional status (6-min walk test; 6MWT) and health status (Kansas City Cardiomyopathy Questionnaire; KCCQ) were also measured biweekly. Linear mixed model analyses indicated that average PSS and greater than usual increases in PSS were associated with worsened KCCQ scores. Greater than usual increases in PSS were associated with worsened 6MWT. Average anger levels were associated with worsened KCCQ, and increases in anger were associated with worsened 6MWT. Adjusting for PSS, anger associations were no longer statistically significant. Adjusting for anger, PSS associations with KCCQ and 6MWT remained significant.

Conclusion: In patients with HF, both perceived stress and anger are associated with poorer functional and health status, but perceived stress is a stronger predictor. Negative effects of anger on HF functional status and health status may partly operate through psychological stress.     

Modal Persistence and Modal Travel

We argue that there is an interesting modal analogue of temporal persistence, namely modal persistence, and an interesting modal analogue of time travel, namely modal travel. We explicate each of these notions and then argue that there are plausible conditions under which some ordinary objects modally persist. We go on to consider whether it is plausible that any modally persistent objects also modally travel. 1     

Transculturality and tradition - renewing the continuous in late modernity

The status and sovereignty of Jerusalem remains one of the most difficult, not to say the most difficult issue to be resolved before a lasting peace can arrive to the Middle East region. This article assumes that any solution to the Jerusalem-issue should be strongly accompanied by a shared vision of it among Jews, Christians and Muslims. In order to explore and elucidate the religious importance and reconciliatory potential of Jerusalem, selected writings by the British scholar and Anglican bishop Kenneth Cragg are examined in light of metaphorical theory (Lakoff &; Johnson). The article demonstrates how the theological and interreligious elasticity of Cragg's approach related to core issues within Christian teaching, and in conversation with the Jewish and Islamic tradition, exhibits an attempt at negotiation and expansion of the meaning of Jerusalem. Such attempts are surely needed if this central metaphor is to be shared among people and traditions with high stakes in the Holy City.     

Examining Sex Work from the Client's Perspective: Assessing Johns Using on-line Data

Academic research on prostitution focuses on the prostitute, rather than the clients, who are called johns. This limits our understanding of the methods and reasons individuals solicit sex. However, johns increasingly use computer mediated communications to discuss sex work. Their comments provide insight into the attitudes and methods of johns. This qualitative study utilizes a sample of posts from active Web forums for johns in 10 U.S. cities. The findings indicate the importance of on-line discussions for johns to identify and solicit sex workers, as well as manage external risks. Implications for law enforcement and deviance research are also discussed.