Cognitive Neuropsychology (COGN NEUROPSYCHOL)

Publisher: Taylor & Francis (Routledge)

Journal description

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.

Current impact factor: 2.07

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 2.073
2013 Impact Factor 1.964
2012 Impact Factor 1.517
2011 Impact Factor 2.134
2010 Impact Factor 2.082
2009 Impact Factor 1.674
2008 Impact Factor 1.755
2007 Impact Factor 1.925
2006 Impact Factor 2.43
2005 Impact Factor 3
2004 Impact Factor 2.746
2003 Impact Factor 2.317
2002 Impact Factor 3.391
2001 Impact Factor 3.397
2000 Impact Factor 2.18
1999 Impact Factor 2.492
1998 Impact Factor 2.9

Impact factor over time

Impact factor

Additional details

5-year impact 2.36
Cited half-life >10.0
Immediacy index 0.35
Eigenfactor 0.00
Article influence 0.90
Website Cognitive Neurospychology website
Other titles Cognitive neuropsychology
ISSN 0264-3294
OCLC 10691303
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Taylor & Francis (Routledge)

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Some individual journals may have policies prohibiting pre-print archiving
    • On author's personal website or departmental website immediately
    • On institutional repository or subject-based repository after either 12 months embargo
    • Publisher's version/PDF cannot be used
    • On a non-profit server
    • Published source must be acknowledged
    • Must link to publisher version
    • Set statements to accompany deposits (see policy)
    • The publisher will deposit in on behalf of authors to a designated institutional repository including PubMed Central, where a deposit agreement exists with the repository
    • STM: Science, Technology and Medicine
    • Publisher last contacted on 25/03/2014
    • This policy is an exception to the default policies of 'Taylor & Francis (Routledge)'
  • Classification

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Pure alexia is an acquired neuropsychological disorder that follows damage to the occipito-temporal lobe. This brain damage results in a severe reading impairment in which previously literate individuals are no longer able to efficiently read words, but are still able to perform other language tasks. The present study sought to identify factors of words that make it more difficult for pure alexic individuals to read, such as letter confusability and word length. Eye-tracking methodology was paired with a naming task to examine whether word length or letter confusability is a better predictor of processing difficulty. It was found that word length was a significant predictor of reading time, while summed letter confusability was not significant. This study contradicts some previous research and shows that when an orthogonal set of stimuli is used, letter confusability is not a significant factor driving this reading impairment in all individuals with pure alexia.
    No preview · Article · Jan 2016 · Cognitive Neuropsychology
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    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.
    No preview · Article · Dec 2014 · Cognitive Neuropsychology
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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.
    No preview · Article · May 2014 · Cognitive Neuropsychology
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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.
    No preview · Article · Dec 2013 · Cognitive Neuropsychology
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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..
    No preview · Article · Dec 2013 · Cognitive Neuropsychology
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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.
    No preview · Article · May 2012 · Cognitive Neuropsychology
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    ABSTRACT: This paper reports the case of a patient HP who presents a dysgraphia affecting the production of letters and digits while sparing shorthand writing. HP's writing impairmentis two-fold. On one hand, HP produces systematic lettersubstitutions affecting exclusively lower-case letters b, p, d, and q. Such confusions are also observed in tasks assessing the mental imagery of letters and the processing of visually presented, isolated letters. This deficit is attributed to a circumscribed disruption of allographic representations. On the other hand, HP can write correctly formed letters and digits but the production of these symbols is slow and nonfluent. This disturbance was investigated by using a digitising tablet to record movements performed in grapho-motor production. The results of the analysis of temporal and kinematic indices suggest that graphic motor patterns of letters and digits are no longer available to this patient, whereas motor patterns underlying the production of shorthand seem unaffected. Itis suggested thatthere are two ways forproducing spatially well-formed symbols. One route is mediated by graphic motor patterns and the other by a motor planning system that would be used in other tasks involving the generation of 2D trajectories as in drawing or in tracing unfamiliar symbols.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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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.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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    ABSTRACT: The goal of this study was two fold and consisted of:(a) reassessing the extent and the nature of the cognitive defect shown by a post-encephalitic patient (LA) previously reported as showing a category-specific impairment for living beings; (b) obtaining a more precise picture of the underlying anatomical lesions. The experimental study of the cognitive disorders of LA has given the follow ing results: 1. Her category-specific semantic impairment for living beings still persisted even when the influence of confounding factors (such as word frequency or stimulus familiarity) was controlled. Her performance, however, was disproportionately influenced by familiarity factors. 2. The pattern of impaired and spared semantic categories was very similar to that observed by other authors and taken as proof that the “living/nonliving” dichotomy suffers from important, systematic exceptions. Within the “living” categories, “body parts” were selectively spared, whereas within the “nonliving” categories “food” and “musical instruments” were severely impaired. 3. Both on a naming-by-definition task and on a sentence verification task, in which the same stimuli were described with reference once to visuoperceptual and once to functional-encyclopaedic information, LA showed a disproportionate deficit in using the visual perceptual attributes of animals and of other living beings for identification. 4. The dissociation between knowledge of living and nonliving beings was not limited to tasks exploring the shape of living stimuli (considered as the core of their structural description) but also extended to other aspects of their visual knowledge, such as their colour. 5. On a sound identification task, LA did not show the usual selective impairment for living beings, since she scored as poorly with anim als' sounds as w ith inanimate objects' sounds. From the anatomical point of view, the bilateral lesions resulting from a previous herpes simplex encephalitis involved both the temporo-limbic structures and the inferior temporal cortex. The possible relationships between the selective cognitive defects and the anatomical locus of lesion of patient LA are briefly discussed.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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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.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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    ABSTRACT: This paper reports a series of experiments on patient JB, a man with memory difficulties following damage to the left frontal lobe. The primary characteristic of JB's recognition memory impairment is a high level of false recognition together with a normal hit rate. The hypothesis that JB's false recognition reflects an over-reliance on familiarity is considered, but discounted on the basis that the false alarm rate is not affected by increasing the similarity between distractors and targets, and remains high when nonword stimuli are used. It is suggested, instead, that JB relies on a poorly focused memory description, which lacks item-specific detail but contains more general, low-level properties of the target items-these properties being held by many distractor items as well. This deficit is considered to arise because of damage to frontally mediated control processes involved in the selection of elements for memory encoding. An encoding deficit is supported by the fact that JB's falserecognition is significantly reduced by orienting instructions, and is eliminated when his remote memory is subjected to recognition testing. In contrast, it is shown that manipulations at the level of retrieval (e.g. restricting the number of "old" responses) have little effect on his false recognition.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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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.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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    ABSTRACT: We examined the effect of grouping by the alignment of implicit axes on the perception of multiple shapes, using a patient (GK) who shows simultanagnosia as part of Blint's syndrome. Five experiments demonstrated that: (1) GK was better able to judge the orientation of a global configuration if the constituent local shapes were aligned with their major axes than if they were aligned with their edges; (2) this axis information was used implicitly, since GK was unable to discriminate between configurations of axis-aligned and edge-aligned shapes; (3) GK's sensitivity to axis-alignment persisted even when the orientations of local shapes were kept constant, indicating some form of cooperative effect between the local elements; (4) axis-alignment of shapes also facilitated his ability to discriminate single-item from multi-item configurations; (5) the effect of axis-alignment could be attributed, at least partially, to the degree to which there was matching between the orientations of local shapes and the global configuration. Taken together, the results suggest that axis-based grouping can support the selection of multiple objects.
    No preview · Article · Sep 2010 · Cognitive Neuropsychology
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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).
    No preview · Article · Sep 2010 · Cognitive Neuropsychology