EARSHOT: A Minimal Neural Network Model of Incremental Human Speech Recognition

Despite the lack of invariance problem (the many-to-many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side-stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real-world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two-layer network that borrows one element from ASR, long short-term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human-like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR.     

Sikh American millennials at work: Institution building,activism, and a renaissance of cultural expression

ABSTRACT

This paper explores the contributions of Sikh American millennials in institution building, activism, and cultural expression in the post 9/11 period. The discussion is based on interviews and fieldwork conducted by the author. I describe the motivations and concerns of Sikh American millennial activists. I also discuss the digital fluencies they apply in their fight against discrimination and violence. They value innovative leadership, civil rights, gender equality, social justice, and youth programs. I conclude that millennial institution building is shaping the community by expanding civil society engagement, promoting youth leadership, and highlighting social problems within the community like sexism and classism.     

Medical psychotherapy consultation: psychoanalytic psychiatry for the patient and professional

An NHS Mental Health Trust Medical Psychotherapy Consultation Service using psychoanalytic psychiatry to help the patient and professional is described. The Consultation Service established in 2000 is offered to secondary acute and community mental health teams and primary care. The service was evaluated as a basis for regional and national development. Between 2006 and 2013, 87 consultations from 210 were sampled to ascertain demographic and diagnostic profiles and outcomes of the consultation process. We conducted an online survey of local consultant psychiatrists’ views about the service, and undertook a thematic analysis of the free text comments. We also conducted a survey of members of the Royal College of Psychiatrists’ Medical Psychotherapy Faculty to ascertain whether similar consultation services existed elsewhere in the UK and had been evaluated. The Leeds model of psychoanalytic consultation – a ‘consultation sandwich’ – is described. From a psychoanalytic perspective, the work of consultation is seen as an extension of the dynamic field of the analytic situation. This paper develops the concept of a bastion – an omnipotent reserve in and between the patient and professional derived from adhesive identifications leading to stuck relationships. The adhesive identification in the patient and professional acts like a ‘grievance glue’ – a mutual manifestation in a last bastion of painful limitations not faced, losses not grieved.     

Out of the ashes: Sikh American institution building and the promise of equality for Sikh women

This paper examines Sikh American institution building in the post-9/11 period, and the impact of these institutions on Sikh women’s status and empowerment within the community. I examine the social and historical context of Sikh American politics and activism. I present the views of Sikh Americans who are directly involved with institution building and I describe their perspectives on women’s empowerment within the new institutions and in the broader Sikh American community. My discussion is based on ethnographic research, including open-ended interviews, participant-observation at conferences and community events, and analyses of public discourses about faith, ethics, politics, gender, and women on Sikh American websites and blogs.     

Epistemic akrasia and the fallibility of critical reasoning

There is widespread disagreement about whether epistemic akrasia is possible. This paper argues that the possibility of epistemic akrasia follows from a traditional rationalist conception of epistemic critical reasoning, together with considerations about the fallibility of our capacities for reasoning. In addition to defending the view that epistemic akrasia is possible, we aim to shed light on why it is possible. By focusing on critical epistemic reasoning, we show how traditional rationalist assumptions about our core cognitive capacities help to explain the possibility of epistemic akrasia.     

Aristotle on Choosing Virtuous Action for its Own Sake

While Aristotle claims that virtuous actions are choiceworthy for their own sakes, he also claims that many virtuous actions are to be chosen as instrumental means to securing further ends. It would seem that an action is choiceworthy for its own sake only if it would be choiceworthy whether or not it served further ends. How, then, can such virtuous actions be choiceworthy for their own sakes? This article criticizes John Ackrill's and Jennifer Whiting's answers to this question. I propose an alternative, linking the choiceworthiness of virtuous actions to the pleasure, nobility, and beauty to be found in them.     

Speaker information affects false recognition of unstudied lexical-semantic associates

Recognition of and memory for a spoken word can be facilitated by a prior presentation of that word spoken by the same talker. However, it is less clear whether this speaker congruency advantage generalizes to facilitate recognition of unheard related words. The present investigation employed a false memory paradigm to examine whether information about a speaker’s identity in items heard by listeners could influence the recognition of novel items (critical intruders) phonologically or semantically related to the studied items. In Experiment 1, false recognition of semantically associated critical intruders was sensitive to speaker information, though only when subjects attended to talker identity during encoding. Results from Experiment 2 also provide some evidence that talker information affects the false recognition of critical intruders. Taken together, the present findings indicate that indexical information is able to contact the lexical-semantic network to affect the processing of unheard words.