Browsing by Author "Leeson, V.C."

Now showing items 1-10 of 10

    • Basic-level visual similarity and category specificity 

      Gale, T.M.; Laws, K.R.; Frank, R.; Leeson, V.C. (2003)
      The role of visual crowding in category deficits has been widely discussed (e.g., [Humphreys et al., 1988]; [Laws and Gale, 2002]; [Tranel et al., 1997]). Most studies have measured overlap at the superordinate level ...

    • A domain specific deficit for foodstuffs in patients with Alzheimer's disease 

      Laws, K.R.; Leeson, V.C.; Gale, T.M. (2002)
      Although some studies have reported a category specific naming deficit in Alzheimer’s patients (invariably for living things), others have failed to replicate this finding (Laws et al., in press). Inconsistencies may partly ...

    • Domain-specific deficits in schizophrenia 

      Laws, K.R.; Leeson, V.C.; McKenna, P. J. (2006)
      Introduction. Object recognition deficits are well documented in certain neurological disorders (e.g., Alzheimer's disease, herpes simplex encephalitis). Although agnosic problems have been documented in some patients with ...

    • The effect of 'masking' on picture naming 

      Laws, K.R.; Leeson, V.C.; Gale, T.M. (2002)
      It is frequently assumed that because compared to nonliving things, living things are less familiar, have lower name frequency, and are more visually complex, this makes them more difficult to name by patients and normal ...

    • Executive inhibition and semantic association in schizophrenia 

      Leeson, V.C.; Simpson, A.; McKenna, P. J.; Laws, K.R. (2005)
      Research indicates that some patients with schizophrenia display aberrant inhibition of semantic memory, which may underpin formal thought disorder (FTD). We administered a novel Stroop-like paradigm to three groups of ...

    • Formal thought disorder is characterised by impaired lexical access 

      Leeson, V.C.; Laws, K.R.; McKenna, P. J. (2006)
      Recent studies have proposed that difficulty with accessing the lexical–semantic memory store may underpin some of the specific linguistic problems associated with formal thought disorder (FTD). We examined the consistency ...

    • Intellectual differences between schizophrenic patients and normal controls across the adult lifespan 

      Kondel, T.K.; Mortimer, A.M.; Leeson, V.C.; Laws, K.R.; Hirsch, S.R. (2003)
      A debate persists about whether IQ declines during the duration of schizophrenia or whether an early deficit remains static across the lifespan. To examine this, we measured estimated current IQ (Quick Test Revised: QTR) ...

    • Storage and Access procedures in Schizophrenia: Evidence for a Two Phase Model of Lexical Impairment 

      Leeson, V.C.; McKenna, P. J.; Laws, K.R. (2005)
      Evidence has accumulated to show that schizophrenia is characterized by lexicalsemantic difficulties; however, questions remain about whether schizophrenics have problems in accessing intact representations or a loss of ...

    • What happens to semantic memory when formal thought disorder remits? : Revisiting a case study 

      Leeson, V.C.; McKenna, P. J.; Murray, G.; Kondel, T.K.; Laws, K.R. (2005)
      Introduction: Laws, Kondel, and McKenna (1999) previously reported a case study analysis of a schizophrenic patient (TC) with severe formal thought disorder (FTD). Examining consistency across item and modality of input, ...

    • When is category specific in Alzheimer's disease 

      Laws, K.R.; Gale, T.M.; Leeson, V.C.; Crawford, J.R. (2005)
      Mixed findings have emerged concerning whether category-specific disorders occur in Alzheimer's disease. Factors that may contribute to these inconsistencies include: ceiling effects / skewed distributions for control data ...