Finding the Signal by Adding Noise: The Role of Noncontrastive Phonetic Variability in Early Word Learning

It is well attested that 14‐month‐olds have difficulty learning similar sounding words (e.g., bih/dih), despite their excellent phonetic discrimination abilities. By contrast, Rost and McMurray (2009) recently demonstrated that 14‐month‐olds’ minimal‐pair learning can be improved by the presentation of words by multiple talkers. This study investigates which components of the variability found in multitalker input improved infants’ processing, assessing both the phonologically contrastive aspects of the speech stream and phonologically irrelevant indexical and suprasegmental aspects. In the first two experiments, speaker was held constant while cues to word‐initial voicing were systematically manipulated. Infants failed in both cases. The third experiment introduced variability in speaker, but voicing cues were invariant within each category. Infants in this condition learned the words. We conclude that aspects of the speech signal that have been typically thought of as noise are in fact valuable information—signal—for the young word learner.     

In support of evidence-based management and research-informed HRD through HRD professional partnerships: an empirical and comparative study

This article describes a programme of practice-grounded empirical management research set within an NHS Trust Hospital in the UK that was conducted as part of an HRD Professional Partnership of the kind advocated by Jacobs (1997). The research was concerned with identifying the criteria of managerial effectiveness at the middle and front-line levels of management using critical incident technique and factor analytic methods. The results are compared against those from an equivalent partnership research study carried out previously by the author within one part of the British Civil Service, namely the Anglia Collection of HM Customs & Excise. The findings lend support to the notion of the 'universally effective manager', and provide empirical support for the potential development of evidence-based and research-informed approaches to management and human resource development within the case-study NHS Trust Hospital, and possibly beyond.     

Contributions of attentional style and previous experience to 4-month-old infants' categorization

We examined how infants' categorization is jointly influenced by previous experience and how much they shift their gaze back-and-forth between stimuli. Extending previous findings reported by Kovack-Lesh, Horst, and Oakes (2008), we found that 4-month-old infants' (N = 122) learning of the exclusive category of cats was related to whether they had cats at home and how much they shifted attention between two available stimuli during familiarization. Individual differences in attention assessed in an unrelated task were not related to their categorization. Thus, infants' learning is multiply influenced by past experience and on-line attentional style.     

Rival Paradigms at Work: Work Reorganization and Labour Force Impacts in a Staple Industry*

Des changements dans l'organisation du travail, et plus particulièrement l'adoption de relations de production postfordistes, ont fait l'objet d'interprétations nouvelles. Certaines ont permis de déceler de nouveaux systèmes de gestion qui ont favorisé la mise en valeur des compétences et la création d'emplois plus intéressants et plus humains. D'autres ont allégué que les nouvelles relations au sein du lieu de travail entraînent une intensification de l'effort ouvrier qui n'a que peu à voir avec la production d'une meilleure qualité d'emploi. Cet article compare deux entreprises d'une même industrie - la production de potasse -, dont l'une à adopté les nouvelles pratiques de gestion et l'autre demeure traditionnelle, afin d'évaluer la validité de ces arguments opposés. Changes in the organization of work, and specifically the adoption of post-Fordist production relations, have been subject to alternative interpretations. Some have identified the new management systems with skill enhancement and the production of more interesting, humane jobs. Others have argued that the new workplace relations represent an intensification of work effort that has little to do with the production of better quality employment. To assess the validity of the competing claims, this article compares two firms in one industry, potash production: one has bought into the new managerial practices, while the other has remained traditional.     

Anticipatory Eye Movements Reveal Infants' Auditory and Visual Categories

We introduce a new paradigm for the assessment of auditory and visual categories in 6‐month‐old infants using a 2‐alternative anticipatory eye‐movement response. Infants were trained by 2 different methods to anticipate the location of a visual reinforcer at 1 of 2 spatial locations (right or left) based on the identity of 2 cuing stimuli. After a training phase, infants were presented with a series of generalization trials in which novel (untrained) stimuli served as the cue to the anticipatory eye movement. Four experiments illustrated that infants can learn the 2‐choice discriminative response during training. Infants also showed anticipatory eye movements to novel stimuli, indicating sensitivity to variations along a variety of stimulus dimensions (e.g., color, shape, orientation, spatial frequency, pitch, and duration). In addition, the paradigm can be used to assess categorization in individual infants, thereby revealing the stimulus dimensions to which infants naturally attend.     

Recovering from Illness or Recovering your Life? Implications of Clinical Versus Social Models of Recovery from Mental Health Problems for Employment Support Services

Although valuable research has been undertaken in the United States little is yet known about the processes engaged in by supported employment projects for people with mental health problems. The study reported here explored these processes using semistructured interviews with employment project clients, their project workers and workplace managers. Of five projects involved in the research, two exemplified radically different approaches, one implicitly underpinned by a clinical model of recovery and the other by a social recovery model. In this article we draw on data from the seven cases studied from these projects to describe the two approaches and to consider their strengths and limitations. We conclude that approaches based on the social recovery model hold more promise, although such approaches would be enhanced through greater liaison with mental health professionals. In addition, funding structures are required that take account of job retention rates, rather than placement rates alone.     

Automated Corneal‐Reflection Eye Tracking in Infancy: Methodological Developments and Applications to Cognition

Since the mid‐1800s, experimental psychologists have been using eye movements and gaze direction to make inferences about perception and cognition in adults (Müller, 1826, cited in Boring, 1942). In the past 175 years, these oculomotor measures have been refined (see Kowler, 1990) and used to address similar questions in infants (see Aslin, 1985, 1987; Branson, 1982; Haith, 1980; Maurer, 1975). The general rationale for relying on these visual behaviors is that where one is looking is closely tied to what one is seeing. This is not to deny the fact that we can detect visual stimuli in the peripheral visual field, but rather that there is a bias to attend to and process information primarily when it is located in the central portion of the retina. Thus, although the direction of gaze is not perfectly correlated with the uptake of visual information (e.g., as in a blank stare or a covert shift of attention), there is a strong presumption that the direction of gaze can provide important information about visual stimuli even in newborn infants (Haith, 1966; Salapatek, 1968; Salapatek & Kessen, 1966).