Relevant bibliographies by topics / Category Boundary Discrimination (CBD)

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Academic literature on the topic 'Category Boundary Discrimination (CBD)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Category Boundary Discrimination (CBD)"

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Lehman, Mark E., and Donald J. Sharf. "Perception/Production Relationships in the Development of the Vowel Duration Cue to Final Consonant Voicing." Journal of Speech, Language, and Hearing Research 32, no. 4 (December 1989): 803–15. http://dx.doi.org/10.1044/jshr.3204.803.

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The purposes of this study were to assess: (a) the development of identification and discrimination in children for the vowel duration cue to final consonant voicing and (b) the perception/production relationships in children for the vowel duration cue to final consonant voicing. Subjects were 30 children divided equally into three age groups, and 10 adults. Productions consisted of 15 repetitions of two target syllables (beet, bead) analyzed acoustically for vowel duration. From these were calculated category boundary, category separation, and variability in production for each subject. Perceptual data were collected using a synthesized speech continuum that varied vowel duration. Identification responses were used to calculate category boundary, category separation (slope/boundary width) and variability (response consistency) for each subject. Mean percentage correct discrimination was derived by using two-step and three-step two-pair same-different paradigms. The results were as follows: (a) category boundary and category separation in production were adult-like by 8 years of age, (b) variability in production was not adult-like by 10 years of age, (c) perception categorization (category boundary and category separation) was adult-like at 5 years of age, (d) perceptual consistency was not adult-like until 10 years of age, (e) percentage correct discrimination was not adult-like by 10 years of age, (f) correlations between comparable perception and production measures were nonsignificant, and (g) a pairwise comparisons analysis indicated that perception was consistently more advanced than production.
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Danilova, M. V., and J. D. Mollon. "Is discrimination enhanced at a category boundary? The case of unique red." Journal of the Optical Society of America A 33, no. 3 (February 26, 2016): A260. http://dx.doi.org/10.1364/josaa.33.00a260.

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Swan, Kristen, and Emily Myers. "Category labels induce boundary-dependent perceptual warping in learned speech categories." Second Language Research 29, no. 4 (October 2013): 391–411. http://dx.doi.org/10.1177/0267658313491763.

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Adults tend to perceive speech sounds from their native language as members of distinct and stable categories; however, they fail to perceive differences between many non-native speech sounds without a great deal of training. The present study investigates the effects of categorization training on adults’ ability to discriminate non-native phonetic contrasts. It was hypothesized that only individuals who successfully learned the appropriate categories would show selective improvements in discriminating between-category contrasts. Participants were trained to categorize progressively narrow phonetic contrasts across one of two non-native boundaries, with discrimination pre- and post-tests completed to measure the effects of training on participants’ perceptual sensitivity. Results suggest that changes in adults’ ability to discriminate a non-native contrast depend on their successful learning of the relevant category structure. Furthermore, post-training identification functions show that changes in perceptual categories specifically correspond to their relative placement of the category boundary. Taken together, these results indicate that learning to assign category labels to a non-native speech continuum is sufficient to induce discontinuous perception of between- versus within-category contrasts.
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Lan, Yizhou, and Will X. Y. Li. "Personality, Category, and Cross-Linguistic Speech Sound Processing: A Connectivistic View." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/586504.

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Category formation of human perception is a vital part of cognitive ability. The disciplines of neuroscience and linguistics, however, seldom mention it in the marrying of the two. The present study reviews the neurological view of language acquisition as normalization of incoming speech signal, and attempts to suggest how speech sound category formation may connect personality with second language speech perception. Through a questionnaire, (being thick or thin) ego boundary, a correlate found to be related to category formation, was proven a positive indicator of personality types. Following the qualitative study, thick boundary and thin boundary English learners native in Cantonese were given a speech-signal perception test using an ABX discrimination task protocol. Results showed that thick-boundary learners performed significantly lower in accuracy rate than thin-boundary learners. It was implied that differences in personality do have an impact on language learning.
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Jakovljev, Ivana, and Suncica Zdravkovic. "The colour lexicon of the Serbian language - a study of dark blue and dark red colour categories Part 2: Categorical facilitation with Serbian colour terms." Psihologija 51, no. 3 (2018): 289–308. http://dx.doi.org/10.2298/psi171115018j.

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Part 1 of this study (Jakovljev & Zdravkovic, 2018) isolated two frequent and salient non- BCTs in the Serbian language: teget ?dark blue? and bordo ?dark red?, that segregate the blue and the red part of the colour space respectively. Now we conducted two experiments to additionally test the cognitive salience of these terms, investigating whether they can produce the category effects in a colour discrimination task. We demonstrated within? and between-participants agreement about the placement of the boundary in the blue and the red part of the colour space, additionally showing that Serbian speakers have distinctive representations of these categories. Analysis of RT in the discrimination task showed category effects ? participants were faster when discriminating colour pairs that belong to different linguistic categories than the pairs from the same category. These results for the first time demonstrated category effect in the Serbian language as well as the category effect in speeded discrimination of the red part of the colour space for any language. They also support views that category effect is linked to higher cognitive processes; hence it can be language specific.
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Liu, Liquan, Ao Chen, and René Kager. "Perception of tones in Mandarin and Dutch adult listeners." Language and Linguistics / 語言暨語言學 18, no. 4 (October 10, 2017): 622–46. http://dx.doi.org/10.1075/lali.18.4.03liu.

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Abstract This paper examines the nature of categorical perception (CP) effects in Mandarin and Dutch adult listeners through identification and discrimination tasks using lexical tonal contrasts and through the CP index analysis. In identification tasks, Mandarin listeners identify tones in accordance with their native tonal categories whereas Dutch listeners do so based on acoustic properties. In discrimination tasks, Dutch listeners outperform Mandarin listeners especially in tonal steps on the continuum falling within the Mandarin tonal category boundary, whereas Mandarin listeners display high sensitivity in discrimination of stimuli falling across the native boundary. The CP index analysis shows a higher degree of CP in Mandarin (categorical perception) than in Dutch (psycho-acoustic perception) listeners.
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Danilova, M. V., and J. D. Mollon. "Is discrimination enhanced at the boundaries of perceptual categories? A negative case." Proceedings of the Royal Society B: Biological Sciences 281, no. 1785 (June 22, 2014): 20140367. http://dx.doi.org/10.1098/rspb.2014.0367.

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The human visual system imposes discrete perceptual categories on the continuous input space that is represented by the ratios of excitations of the cones in the retina. Is discrimination enhanced at the boundaries between perceptual hues, in the way that discrimination may be enhanced at the boundaries between speech sounds in hearing? In the chromaticity diagram, the locus of unique green separates colours that appear yellowish from those that appear bluish. Using a two-alternative spatial forced choice and an adapting field equivalent to the Daylight Illuminant D65, we measured chromatic discrimination along lines orthogonal to the locus of unique green. In experimental runs interleaved with these performance measurements, we obtained estimates of the phenomenological boundary from the same observers. No enhancement of objectively measured discrimination was observed at the category boundary between yellowish and bluish hues. Instead, thresholds were minimal at chromaticities where the ratio of long-wave to middle-wave cone excitation was the same as that for the background adapting field.
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Danilova, M. V., and J. D. Mollon. "Enhanced discrimination at a perceptual category boundary: Subjective and performance measures are concomitantly shifted by chromatic adaptation." Journal of Vision 12, no. 14 (December 27, 2012): 10. http://dx.doi.org/10.1167/12.14.10.

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9

Myers, Emily B., and Kristen Swan. "Effects of Category Learning on Neural Sensitivity to Non-native Phonetic Categories." Journal of Cognitive Neuroscience 24, no. 8 (August 2012): 1695–708. http://dx.doi.org/10.1162/jocn_a_00243.

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Categorical perception, an increased sensitivity to between- compared with within-category contrasts, is a stable property of native speech perception that emerges as language matures. Although recent research suggests that categorical responses to speech sounds can be found in left prefrontal as well as temporo-parietal areas, it is unclear how the neural system develops heightened sensitivity to between-category contrasts. In the current study, two groups of adult participants were trained to categorize speech sounds taken from a dental/retroflex/velar continuum according to two different boundary locations. Behavioral results suggest that for successful learners, categorization training led to increased discrimination accuracy for between-category contrasts with no concomitant increase for within-category contrasts. Neural responses to the learned category schemes were measured using a short-interval habituation design during fMRI scanning. Whereas both inferior frontal and temporal regions showed sensitivity to phonetic contrasts sampled from the continuum, only the bilateral middle frontal gyri exhibited a pattern consistent with encoding of the learned category scheme. Taken together, these results support a view in which top–down information about category membership may reshape perceptual sensitivities via attention or executive mechanisms in the frontal lobes.
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10

Howard, David, Stuart Rosen, and Victoria Broad. "Major/Minor Triad Identification and Discrimination by Musically Trained and Untrained Listeners." Music Perception 10, no. 2 (1992): 205–20. http://dx.doi.org/10.2307/40285607.

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The extent to which a computer-synthesized continuum of major to minor triads was categorically perceived was examined using labeling and discrimination tests. The 32 listeners varied widely in " musicality," assessed by an objective test of basic musical skills. There was a strong positive relationship between musicality and ability to label the major/minor continuum consistently ( measured by the slope of the labeling function). Overall discrimination performance varied only weakly with musicality, although the pattern of discrimination performance across the continuum differed strongly among three listener subgroups, distinguished on the basis of musicality. The most "musical" listeners showed a close relationship between the position of the discrimination peak and the category boundary calculated from the labeling function, a strong indicator of categorical perception. On similar criteria, the evidence for categorical perception was nonexistent in the least musical listeners and moderate in an intermediate group. From the evidence that the extent of categorical perception appears to vary in a graded fashion with the degree of musicality, we conclude that categorical perception can arise primarily through a process of learning.
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Dissertations / Theses on the topic "Category Boundary Discrimination (CBD)"

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Stokes, Steven Scott. "An Examination of the Psychometric Properties of the Trauma Inventory for Partners of Sex Addicts (TIPSA)." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6500.

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This study examined the psychometric properties of the Trauma Inventory for Partners of Sex Addicts (TIPSA). Using the Nominal Response Model (NRM), I examined several aspects of item and option functioning including discrimination, empirical category ordering, and information. Category Boundary Discrimination (CBD) parameters were calculated to determine the extent to which respondents distinguished between adjacent categories. Indistinguishable categories were collapsed through recoding. Empirically disordered response categories were also collapsed through recoding. Findings revealed that recoding solved some technical functioning issues in some items, and also revealed items (and perhaps option anchors) that were probably poorly conceived initially. In addition, nuisance or error variance was reduced only marginally by recoding, and the relative standing of respondents on the trait continuum remained largely unchanged. Items in need of modification or removal were identified, and issues of content validity were discussed.
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