Cognitive Neuropsychology (COGN NEUROPSYCHOL )

Publisher: Taylor & Francis


Cognitive Neuropsychology promotes the study of cognitive processes from a neuropsychological perspective. It publishes full-length and short empirical reports as well as theoretical articles and occasional reviews that advance our understanding of human cognition and its neural substrates. Research on cognitive disorders (including developmental disorders and disorders associated with aging), computational neuropsychology, and functional neuroimaging that illuminate theories of normal functioning is appropriate for the journal; so too are studies of rehabilitation based upon a cognitive-neuropsychological framework.

Impact factor 1.96

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  • Website
    Cognitive Neurospychology website
  • Other titles
    Cognitive neuropsychology
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    Periodical, Internet resource
  • Document type
    Journal / Magazine / Newspaper, Internet Resource

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Taylor & Francis

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    • STM: Science, Technology and Medicine
    • SSH: Social Science and Humanities
    • Publisher last contacted on 25/03/2014
    • 'Taylor & Francis (Psychology Press)' is an imprint of 'Taylor & Francis'
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Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper reports the case of a dyslexic boy (L.A.) whose impaired reading of Filipino is consistent with developmental surface dyslexia. Filipino has a transparent alphabetic orthography with stress typically falling on the penultimate syllable of multisyllabic words. However, exceptions to the typical stress pattern are not marked in the Filipino orthography. L.A. read words with typical stress patterns as accurately as controls, but made many more stress errors than controls when reading Filipino words with atypical stress. He regularized the pronunciation of many of these words by incorrectly placing the stress on the penultimate syllable. Since he also read nonwords as accurately and quickly as controls and performed well on tests of phonological awareness, L.A. appears to present a clear case of developmental surface dyslexia in a transparent orthography.
    Cognitive Neuropsychology 12/2014;
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    ABSTRACT: The article is concerned with inferences from the behaviour of neurological patients to models of normal function. It takes the letter-by-letter reading strategy common in pure alexic patients as an example of the methodological problems involved in making such inferences that compensatory strategies produce. The evidence is discussed on the possible use of three ways the letter-by-letter reading process might operate: "reversed spelling"; the use of the phonological input buffer as a temporary holding store during word building; and the use of serial input to the visual word-form system entirely within the visual-orthographic domain such as in the model of Plaut [1999. A connectionist approach to word reading and acquired dyslexia: Extension to sequential processing. Cognitive Science, 23, 543-568]. The compensatory strategy used by, at least, one pure alexic patient does not fit with the third of these possibilities. On the more general question, it is argued that even if compensatory strategies are being used, the behaviour of neurological patients can be useful for the development and assessment of first-generation information-processing models of normal function, but they are not likely to be useful for the development and assessment of second-generation computational models.
    Cognitive Neuropsychology 05/2014;
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    ABSTRACT: Most compound words are constituted of a head constituent (e.g., light in moonlight) and a modifier constituent (e.g., moon in moonlight); the information transmitted by these head-modifier roles is fundamental for defining the grammatical and semantic properties of the compound and for identifying a correct combination of the constituents at the conceptual level. The objective of this study is to assess how lexical processing in aphasia is influenced by the head-modifier structure of nominal compounds. A picture-naming task of 35 compounds with head-initial (pescespada, swordfish, literally fishsword) and head-final (autostrada, highway, literally carroad) forms was administered to 45 Italian aphasic patients, and their accuracy in retrieving constituents was analysed with a mixed-effects logistic regression. The interaction between headedness and constituent position was significant: The modifier emerged as being more difficult to retrieve than the head, but only for head-final compounds. The results are consistent with previous data from priming experiments on healthy subjects and provide convincing evidence that compound headedness is represented at central processing levels.
    Cognitive Neuropsychology 12/2013; in press.
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    ABSTRACT: HTLV-I-associated myelopathy (HAM/TSP) is the most common neurological manifestation of HTLV-I, causing progressive weakness, sensory disturbance, and sphincter dysfunction. Although motor disorders have been well described, few studies have associated cognitive disorders and HTLV-I infection. In areas endemic for HTLV-I infection, the differential diagnosis between HAM/TSP and other myelopathy etiologies can be diffcult, particularly if the patient has signs and symptoms of brain involvement, since seropositive HTLV-I patients can present other neurological diseases. Here, we report one case initially diagnosed as Multiple Sclerosis (MS) which, upon further investigation, was found to be HTLV-I seropositive..
    Cognitive Neuropsychology 12/2013; 7(4):439-443.
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    ABSTRACT: In this study, we examined sentence production in a sample of adults (N = 21) who had had attention-deficit/hyperactivity disorder (ADHD) as children, but as adults no longer met DSM-IV diagnostic criteria (APA, 2000). This “remitted” group was assessed on a sentence production task. On each trial, participants saw two objects and a verb. Their task was to construct a sentence using the objects as arguments of the verb. Results showed more ungrammatical and disfluent utterances with one particular type of verb (i.e., participle). In a second set of analyses, we compared the remitted group to both control participants and a “persistent” group, who had ADHD as children and as adults. Results showed that remitters were more likely to produce ungrammatical utterances and to make repair disfluencies compared to controls, and they patterned more similarly to ADHD participants. Conclusions focus on language output in remitted ADHD, and the role of executive functions in language production.
    Cognitive Neuropsychology 05/2012; 29(3).
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    ABSTRACT: We describe the single word reading impairment of a patient with severe acquired alexia in the context of largely spared auditory-verbal language. DES shows strong effects of lexical variables when reading words; she is completely unable to read nonwords. Her “visual” reading errors (orthographically related word substitutions) reflect a strong positional bias to differ from targets toward their right sides; this positional bias was evident across several different topographic transformations of the stimuli and was present in her spelling errors. Such a pattern of positional letter retention is commonly associated with right “neglect dyslexia” and has been interpreted as indicating damage to a spatially encoded word representation. However, DES shows no sign of spatial impairment in nonlanguage tasks, fails to demonstrate several of the characteristics thought to be diagnostic of “neglect dyslexia,” and shows no evidence of neglect in sentence reading. In contrast to the spatial account, we interpret DES's primary impairment as one involving a prelexical, transient level of representation in which letter order is coded abstractly (i.e. neither spatially nor serially).
    Cognitive Neuropsychology 09/2010; 16(6):513-556.
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    ABSTRACT: Three experiments assessed visual search and target enumeration performance in a patient (DW) with damage to the right temporo-parietal region. DW was extremely accurate in single feature and conjunction visual search tasks. In enumeration tasks in which there were no distractors DW was also extremely accurate, showed a normal subitisation-counting function, and could use global shape as a guide to numerosity. However, enumeration of targets amongst distractors was only accurate for up to three or four items, after which performance decreased rapidly. The results are discussed in relation to recent theories of enumeration.
    Cognitive Neuropsychology 09/2010; 16(7):609-629.
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    ABSTRACT: In the present article, we investigated the reading ability of CP, a pure alexic patient, using an experimental paradigm that is known to elicit the viewing position effect in norm al readers. The viewing position effect consists of a systematic variation of word recognition performance as a function of fixation location w ithin a word: Word recognition is best when the eyes fixate slightly left from the word centre and decreases when the eyes deviate from this optimal viewing position. A mathematical model (Nazir, O'Regan, & Jacobs, 1991), which provides a good description and quantification of the prototypical shape of the viewing position effect, served to interpret CP's reading performance. The results show ed that, like normal readers, CP was able to process all letters of a w ord in one fixation. However, in contrast to normal readers, reading performance was optimal when CP w as fixating the right half of the word. This somewhat abnormal pattern of performance was due to (1) poor perceptual processing in the right visual field, and (2) poor processing of letters situated towards the end of the word, independent of visual field presentation. A similar pattern of perform ance w as obtained with normal readers under experimental conditions in which lexical know ledge was of restricted use. We suggest that CP's reading impairment stems from a dysfunction in the coupling between incoming visual information and stored lexical information. This dysfunction is thought to uncover a prelexical level of word processing, where letter information is weighted differently as a function of letter position in a word-centred space.
    Cognitive Neuropsychology 09/2010; 15(1):93-140.
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    ABSTRACT: We describe a patient (KW) w ho show s impaired auditory comprehension of words in the presence of relatively intact written comprehension. His ability to perform auditory discrimination, repetition, and lexical decision tasks for words he cannot understand indicates that he has a word meaning deafness. It has been proposed that this deficit results from an impairment in the mappings between auditory lexical and semantic representations. A pure deficit of this nature w ould predict intact spelling to dictation for words that cannot be comprehended by way of a direct lexical, nonsemantic route betw een auditory and orthographic lexicons. In the case of KW, ability to write to dictation is relatively well-preserved for both regular and irregular words, relative to auditory comprehension. The nature of KW 's spelling errors was considered. In particular, w e reflect on the origin of his spelling errors since these may provide evidence regarding the nature of the lexical nonsemantic route that mediates w riting to dictation. KW 's performance is discussed in terms of current models of the spelling process.
    Cognitive Neuropsychology 09/2010; 14(8):1131-1164.
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    ABSTRACT: We present a longitudinal investigation of the language deficits of RB and CB, two brothers with primary progressive aphasia. Experiments 1 to 5 assessed word production in picture naming, naming with progressive phonemic cueing, reading, immediate and delayed repetition of single words, and repetition of two-word strings. Experiment 6 investigated receptive word processing using a picture-name judgement task with phonologically related, semantically related, and unrelated distractors. RB was less successful in naming than CB, and made most errors to semantically related distractors in the input task, whereas CB was more impaired than RB in repetition tasks and in detecting phonological distractors at input. The brothers are considered to have different processing deficits with reference to an interactive spreading activation model of speech production (Dell, 1986; Martin & Saffran, 1992).
    Cognitive Neuropsychology 09/2010; 16(8):705-747.
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    ABSTRACT: Snowden, Griffiths, and Neary (1994, 1995) have proposed thatautobiographical experience helps to maintain the integrity of semantic memory in patients with semantic dementia. We investigated this hypothesis by testing knowledge related to golf and bowls in two case studies. If Snowden and colleagues' hypothesis is correct, our two patients should have better semantic knowledge for the sport that they regularly experience, compared with knowledge of other sports. In keeping with Snowden et al's hypothesis, we found that autobiographical experience influenced the ability of the patients to match up a surname with a first name: The names of personally and currently relevant golf bowls partners were more likely to be matched correctly than such personally relevant names from the past, or the names of famous sports celebrities. Unlike Snowden et al., however, we found that knowledge of people, in all categories, was severely impoverished and that any semantic information was produced as part of an autobiographical memory. Likewise, detailed study of each patient's understanding of their favourite sportrevealed no significanteffectof autobiographical experience on true semantic knowledge. We propose that the ability of semantic dementia patients to encode, albeit temporarily, recent autobiographical memories via a spared hippocampal complex supports the production of highly autobiographically constrained semantic-like facts and, to a lesser extent, frequently encountered names. There is, however, no direct effect of autobiographical experience on previously established semantic memory, i.e. knowledge of golf, bowls, and people, presumably stored within the temporal neocortex. These results are discussed with respect to current anatomically based computational models of long-term memory.
    Cognitive Neuropsychology 09/2010; 14(6):801-837.
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    ABSTRACT: Confabulation is usually assumed to result from a deficit in either the memory verification processes alone or in both the search and the verification processes. The present study concerns a patient who, in contrast to other patients, displayed confabulations but had preserved memory verification abilities. She exhibited only a selective impairment of the search processes. Recognition abilities were preserved, and cued recall was better than free recall. On the latter task, she recalled fewer correct items and produced more intrusions than control subjects. The patient had normal performance in several tests usually assumed to tap "executive functions." It is thus concluded that an impairment in verification, regardless of whether it is specific or not to memory, is not a necessary component of confabulations. The case is discussed in relation to two memory control processes models (Burgess & Shallice, 1996a; Moscovitch, 1989, 1995; Moscovitch & Melo, 1997), to the Source Monitoring Framework (Johnson, Hashtroudi, & Lindsay, 1993), and to the Constructive Memory Framework (Schacter, Norman, & Koutstaal, 1998). We proposed new hypotheses about possible deficits in the search process so as to account for the difference between amnesic patients with and without confabulations.
    Cognitive Neuropsychology 09/2010;
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    ABSTRACT: We have shown that in semantic dementia (Snowden, Griffiths, & Neary, 1994, 1995, 1996) patients' knowledge is significantly influenced by its relevance to their autobiographical experience. Graham, Lambon Ralph, and Hodges (1997), in an investigation of the autobiographical effect, found that general knowledge of sports in which their semantic dementia patients participated was no better than that for other sports and inferred that their data contradict the hypothesis that experience helps to preserve meaning. The purpose of this paper is to address the apparent conflict of views. First, we show that the hypothesis under investigation in the Graham et al. study, that experience maintains all the knowledge about a concept, is not one to which we subscribe and that much of their data is in fact consistent with our own findings. We highlight similarities in our interpretation of the autobiographical effect. We then examine those areas in which our opinions appear to diverge. We argue that autobiographically relevant knowledge can be explicit and is not merely implicit and is semantic and not merely procedural. We argue, moreover, that it is truly semantic and not merely semantic-like. We reconsider the nature of semantic knowledge and the relationship between medial temporal and temporal neocortical memory systems.
    Cognitive Neuropsychology 09/2010; 16(7):673-687.