Statistical learning of multiple speech streams: A challenge for monolingual infants

Language acquisition depends on the ability to detect and track the distributional properties of speech. Successful acquisition also necessitates detecting changes in those properties, which can occur when the learner encounters different speakers, topics, dialects, or languages. When encountering multiple speech streams with different underlying statistics but overlapping features, how do infants keep track of the properties of each speech stream separately? In four experiments, we tested whether 8‐month‐old monolingual infants (N = 144) can track the underlying statistics of two artificial speech streams that share a portion of their syllables. We first presented each stream individually. We then presented the two speech streams in sequence, without contextual cues signaling the different speech streams, and subsequently added pitch and accent cues to help learners track each stream separately. The results reveal that monolingual infants experience difficulty tracking the statistical regularities in two speech streams presented sequentially, even when provided with contextual cues intended to facilitate separation of the speech streams. We discuss the implications of our findings for understanding how infants learn and separate the input when confronted with multiple statistical structures.     

Interactional Imogen: language,practice and the body

Phenomenology and the Cognitive Sciences - Here I try to improve on the available answers to certain long-debated questions and set out some consequences for the answers. Are there limits to the...     

An intimate connection: Oliver Zangwill and the emergence of neuropsychology in Britain

In this article, the author argues that a number of conditions conspired to place the Cambridge psychologist Oliver Zangwill in a pivotal position for pursuing and promoting neuropsychology in Britain after World War II. In broad terms, these were the background and experience of Zangwill himself, the practical engagement of psychologists with patients with brain damage, neurologists, and psychiatrists, the introduction of medical reform including the establishment of a National Health Service, rekindled interest in cortical localization, and the elite social networks that existed in medicine and university life in postwar Britain. The author claims that the career of Zangwill reveals rather than obscures the importance of these wider conditions and demonstrates an unusually close connection between an individual and the emergence of a subdiscipline.     

Perceived Risks and Benefits in a Text Message Study of Substance Abuse and Sexual Behavior

To inform ethical procedures for human subjects research using mobile health (mHealth), we examined perceived risks and benefits of study participation among emerging adults (N = 54) with drug use who completed text message assessments of substance use and sexual behaviors. Most participants reported comfort with participation and some reported perceived benefits, such as improved relationships. Perceived risks were infrequently reported, including negative emotions and legal or financial concerns. In conclusion, participants from a vulnerable population reported few perceived harms of participation in longitudinal mHealth assessments of sensitive behaviors. Researchers should continue characterizing participants’ perspectives on ethical aspects of mHealth research.     

Does “Violent” Mean “Bad”? Individual Definitions of Violence

People use the word “violent” to describe a wide range of behaviors. When referring to acts of force, however, past research indicates that people often reserve the word “violent” to refer to acts of force that they define as “bad.” In the current study we use vignettes to explore variation in people’s definitions of a particular instance of the use of force. The findings indicate support for the idea that people reserve the word “violent” to refer to acts of force they view as “bad.” Findings indicate there is variation in perceptions of the level of violence, and whether the incident was even violent. Characteristics of the incident as well as the gender of those involved account for the majority of the variance explained.     

Responsiveness to verbal instruction during anesthesia: a pilot report

Five patients who were undergoing surgery were instructed to tense their forehead muscles. On 11 out of 12 trials, the patient's muscle tension was greater during the suggestion period than during the nonsuggestion condition.     

On authenticity: the question of truth in construction and autobiography

Freud was occupied with the question of truth and its verification throughout his work. He looked to archaeology for an evidence model to support his ideas on reconstruction. He also referred to literature regarding truth in reconstruction, where he saw shifts between historical fact and invention, and detected such swings in his own case histories. In his late work Freud pondered over the impossibility of truth in reconstruction by juxtaposing truth with ‘probability’. Developments on the role of fantasy and myth in reconstruction and contemporary debates over objectivity have increasingly highlighted the question of ‘truth’ in psychoanalysis. I will argue that ‘authenticity’ is a helpful concept in furthering the discussion over truth in reconstruction. Authenticity denotes that which is genuine, trustworthy and emotionally accurate in a reconstruction, as observed within the immediacy of the analyst/patient interaction. As authenticity signifies genuineness in a contemporary context its origins are verifiable through the analyst’s own observations of the analytic process itself. Therefore, authenticity is about the likelihood and approximation of historical truth rather than its certainty. In that respect it links with Freud’s musings over ‘probability’. Developments on writing ‘truths’ in autobiography mirror those in reconstruction, and lend corroborative support from another source.     

The influence of suggestibility on memory

We provide a translation of Binet and Henri's pioneering 1894 paper on the influence of suggestibility on memory. Alfred Binet (1857-1911) is famous as the author who created the IQ test that bears his name, but he is almost unknown as the psychological investigator who generated numerous original experiments and fascinating results in the study of memory. His experiments published in 1894 manipulated suggestibility in several ways to determine effects on remembering. Three particular modes of suggestion were employed to induce false recognitions: (1) indirect suggestion by a preconceived idea; (2) direct suggestion; and (3) collective suggestion. In the commentary we suggest that Binet and Henri's (1894) paper written over 115 years ago is still highly relevant even today. In particular, Binet's legacy lives on in modern research on misinformation effects in memory, in studies of conformity, and in experiments on the social contagion of memory.