Interference between phonemes during monitoring: Evidence for an interactive activation model of speech perception.

Explored the finding by J. E. Newman and G. S. Dell (see record 1981-00233-001) that the time needed to detect a target phoneme in a phoneme monitoring task increased when the preceding word contained a phoneme similar to the target. In 3 experiments, 58 undergraduates who were native speakers of English monitored auditorily presented sentences and responded as quickly as possible whenever they detected a specified phoneme. Preceding word-initial phonemes, despite being processed more quickly, increased the response latency to the following target phoneme more than did preceding word-medial phonemes. There was also an increase in response latency even when the S could be highly certain that the similar preceding phoneme was not an instance of the target phoneme. It is argued that the interference effects are due to fundamental characteristics of perceptual processing and that more time is needed to categorize the target phoneme. A computer simulation using an interactive activation model of speech perception is presented to demonstrate the plausibility of this explanation. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Influences of spoken word planning on speech recognition.

In 4 chronometric experiments, influences of spoken word planning on speech recognition were examined. Participants were shown pictures while hearing a tone or a spoken word presented shortly after picture onset. When a spoken word was presented, participants indicated whether it contained a prespecified phoneme. When the tone was presented, they indicated whether the picture name contained the phoneme (Experiment 1) or they named the picture (Experiment 2). Phoneme monitoring latencies for the spoken words were shorter when the picture name contained the prespecified phoneme compared with when it did not. Priming of phoneme monitoring was also obtained when the phoneme was part of spoken nonwords (Experiment 3). However, no priming of phoneme monitoring was obtained when the pictures required no response in the experiment, regardless of monitoring latency (Experiment 4). These results provide evidence that an internal phonological pathway runs from spoken word planning to speech recognition and that active phonological encoding is a precondition for engaging the pathway. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Influence of onset density on spoken-word recognition.

Previous research has suggested that the initial portion of a word activates similar sounding words that compete for recognition. Other research has shown that the number of similar sounding words that are activated influences the speed and accuracy of recognition. Words with few neighbors are processed more quickly and accurately than words with many neighbors. The influences of the number of lexical competitors in the initial part of the word were examined in a shadowing and a lexical-decision task. Target words with few neighbors that share the initial phoneme were responded to more quickly than target words with many neighbors that share the initial phoneme. The implications of onset-density effects for models of spoken-word recognition are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of onset cluster complexity in speeded naming: A test of rule-based approaches.

Undergraduates participated in 3 speeded naming experiments investigating the effect of onset cluster complexity on response latency. Words with complex onsets (e.g., spin) had shorter response latencies than words with simple onsets (e.g., sin), despite the fact that words with complex onsets had more letters and phonemes but fewer neighbors, properties previously found to increase naming latency. Moreover, the magnitude of the effect depended on the particular complex onset. These onset complexity effects can be explained by the constraint imposed by the 2nd letter on the 1st letter and 1st phoneme for words with an onset. This constraint ultimately arises because phonemes increase in sonority from the beginning of the syllable to the nucleus. Dual-route models cannot account for these results, but analogy and parallel distributed models can, if the criterion to initiate articulation is based on the initial phoneme. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Acquiring the alphabetic principle: A case for teaching recognition of phoneme identity.

Studied how 2 components of phonemic awareness, recognition of phoneme identity across words and recognition of phonemic segmentation within words, influence acquisition of the alphabetic principle in preliterate children. Evidence favored training in phoneme identity over segmentation as a component of initial reading instruction because it was easier to implement and its relationship to alphabetic insight was stronger. The study also found that identity can be equally easily taught using word-initial and word-final phonemes, a phoneme in a consonant cluster does not present special problems, vowels are as amenable to training as consonants, and stops are more problematic than continuants. Once alphabetic insight is established for some letters, following identity and letter–sound instruction, it generalizes to other letters without the need for further phonemic awareness training. Implications for the initial reading curriculum are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Retrieval of lexical–syntactic features in tip-of-the tongue states.

Italian speakers who signaled that they were in a tip-of-the-tongue (TOT) state were asked to recognize the grammatical gender and the initial and the final phonemes of the unavailable word. The proportions of gender and phoneme hits that occurred with "don't know" (DK) responses were adopted as baselines for chance-level performance. Participants were more accurate in recognizing the grammatical gender and the initial but not the final phoneme of target words when they were in TOT than in DK states. The availability of gender in TOT states suggests the independence of syntactic from phonological information in lexical access. However, the retrieval of gender was far from perfect for TOT words, and it was no better than recognition of the initial phoneme. These results are problematic for the notion that the selection of a lemma is synonymous with the retrieval of the word's syntactic features. The implications of these results for the distinction between lemma and lexeme levels of representation in lexical access are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceiving imitatible stimuli: Consequences of isomorphism between input and output.

For more than a century, psychologists have been intrigued by the idea that mental representations of perceived human actions are closely connected with mental representations, of performing those same actions. In this article, connections between input and output representations are considered in terms of the potential for imitation. A broad range of evidence suggests that, for imitatible stimuli, input and output representations are isomorphic to one another, allowing mutual influence between perception and motoric planning that is rapid, effortless, and possibly obligatory. Thus, the cognitive consequences of imitability may underlie such diverse phenomena as phoneme perception; imitation in neonates; echoic memory; stimulus–response compatibility; conduction aphasia; maintenance rehearsal; and a variety of developmental and social activities such as language acquisition, social learning, empathy, and monitoring one's own behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On the complexities of measuring naming.

The aims of this study were to investigate the adequacy of electronic voice keys for the purpose of measuring naming latency and to test the assumption that voice key error can be controlled by matching conditions on initial phoneme. Three types of naming latency measurements (hand-coding and 2 types of voice keys) were used to investigate effects of onset complexity (e.g., sat vs. spat) on reading aloud (J. R. Frederiksen & J. F. Kroll, 1976, A. H. Kawamoto & C. T. Kello, 1999). The 3 measurement techniques produced the 3 logically possible results: a significant complexity advantage, a significant complexity disadvantage, and a null effect. Analyses of the performance of each voice key are carried out, and implications for studies of naming latency are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Cross-Linguistic Comparison of Children Learning to Read in English and Dutch.

The authors report on a cross-linguistic investigation of the reading skills of 6- to 11-year-old children of English (an opaque orthography) and of Dutch (a transparent orthography). Dutch children were relatively more accurate and faster than English children of the same age at reading words and nonwords and also faster to complete phoneme deletion tasks, but the language differences were smaller than expected and modified by age. The predictors of individual differences in reading were similar in the 2 languages; phoneme awareness (as measured by accuracy and response time measures) was a significant predictor of reading, whereas rapid naming of colors, animals, and objects was not. The authors conclude that phoneme awareness is a predictor of individual differences in reading skill in transparent as well as opaque orthographies. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Electrophysiological responses to coarticulatory and word level miscues.

The influence of coarticulation cues on spoken word recognition is not yet well understood. This acoustic/phonetic variation may be processed early and recognized as sensory noise to be stripped away, or it may influence processing at a later prelexical stage. The present study used event-related potentials (ERPs) in a picture/spoken word matching paradigm to examine the temporal dynamics of stimuli systematically violating expectations at three levels: entire word (lexical), initial phoneme (phonemic), or in coarticulation cues contained in the initial phoneme (subphonemic). We found that both coarticulatory and phonemic mismatches resulted in increased negativity in the N280, interpreted as indexing prelexical processing of subphonemic information. Further analyses revealed that the point of uniqueness differentially modulated subsequent early or late negativity depending on whether the first or second segment matched expectations, respectively. Finally, it was found that word-level but not coarticulatory mismatches modulated the later-going N400 component, indicating that subphonemic information does not influence word-level selection provided no lexical change has occurred. The results indicate that acoustic/phonetic variation resulting from coarticulation is preserved in and influences spoken word recognition as it becomes available, particularly during prelexical processing. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

The role of contingency in classical conditioning.

The assumption that classical conditioning depends on a contingent relation between the conditioned stimulus (CS) and the unconditioned stimulus (US), which was proposed some decades ago as an alternative to the traditional contiguity assumption, still is widely accepted as an empirical generalization, if no longer as a theoretical postulate. The first support for the contingency assumption was provided by experiments in which occasional CS–US pairings produced no response to the CS in random training—i.e., training in which the probability of the US was the same in the presence and absence of the CS. Those early experiments, the results of which too often are taken at face value, are reconsidered along with various later experiments that show conditioning, both of the CS and its context, in random training. The evidence suggests that CS–US contingency is neither necessary nor sufficient for conditioning and that the concept has long outlived any usefulness it may once have had in the analysis of conditioning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of rodents on reforestation in the moumtain regions near Beijing

A long survival is rarely observed in patients demonstrating recurrent malignant lymphoma with bulky disease because of the appearance of chemoresistant tumor cells after extensive chemotherapy, and moreover the presence of bulky disease has also been consistently associated with a poorer response rate and a shortened survival, due to the fact that tumor size is the most significant factor for the treatment of non-Hodgkin's lymphoma. We herein describe a case of a 53-year-old woman presenting with the chief complaint of abdominal fullness, who underwent intraoperative radiation therapy (IORT) for recurrent bulky non-Hodgkin's lymphoma in the mesenterium. The patient has had no evidence of tumor recurrence, based on the findings of regular abdominal computed tomographic scans, 60 months after initial chemotherapy and 28 months after IORT.     

Prelexical facilitation and lexical interference in auditory word recognition.

Phonological priming effects were examined in an auditory single-word shadowing task. In 6 experiments, target items were preceded by auditorily or visually presented, phonologically similar, word or nonword primes. Results reveal facilitation in response time when a target was preceded by a word or nonword prime having the same initial phoneme when the prime was auditorily presented but not when it was visually presented. Second, modality-independent interference was observed when the phonological overlap between the prime and target increased from 1 to 3 phonemes for word primes but not for nonword primes. Taken together, these studies suggest that phonological information facilitates word recognition as a result of excitation at a prelexical level and increases response time as a result of competition at a lexical level. These processes are best characterized by connectionist models of word recognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Processing of illegal consonant clusters: A case of perceptual assimilation?

Evidence is presented for a perceptual shift affecting consonant clusters that are phonotactically illegal, albeit pronounceable, in French. They are perceived as phonetically close legal clusters. Specifically, word-initial /dl/ and /tl/ are heard as /gl/ and /kl/, respectively. In 2 phonemic gating experiments, participants generally judged short gates—which did not yet contain information about the 2nd consonant /l/—as being dental stops. However, as information for the /l/ became available in larger gates, a perceptual shift developed in which the initial stops were increasingly judged to be velars. A final phoneme monitoring test suggested that this kind of shift took place on-line during speech processing and with some extratemporal processing cost. These results provide evidence for the automatic integration of low-level phonetic information into a more abstract code determined by the native phonological system. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Gaining alphabetic insight: Is phoneme manipulation skill or identity knowledge causal?

The type of phoneme awareness that supports reading acquisition has been unclear. Phoneme awareness is usually operationalized as skill in manipulating phonemes in blending and segmentation tasks. However, B. Byrne and R. Fielding-Barnsley (1990) argued that phoneme awareness is knowledge of phoneme identities (i.e., recognition of individual phonemes in spoken word contexts). In a double-blind teaching experiment, 48 kindergartners were randomly assigned to identity, manipulation, or language experience programs. Children in the manipulation program made significantly greater gains on tests of blending and segmentation. However, children in the identity program made significantly greater gains on a test of phonetic cue reading, a measure of rudimentary decoding ability. Teaching recognition of particular phonemes in word contexts may help beginners gain insight into the alphabetic principle and apply their insights in early word identification. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Response expectancy as a determinant of experience and behavior.

Reviews research on placebos, hypnosis, and fear reduction that indicates that response expectancies, defined as expectancies of the occurrence of nonvolitional responses, generate corresponding subjective experiences, the genuineness of which has been substantiated by corresponding changes in behavior and physiological function. The means by which response expectancies affect experience, physiology, and behavior are hypothesized to vary as a function of response mode. The generation of changes in subjective experience by corresponding response expectancies is suggested to be a basic psychological mechanism. Physiological effects are accounted for by the mind–body identity assumption that is common to all nondualist philosophies of psychology. It is argued that the effects of response expectancies on volitional behavior are due to the reinforcing properties of many nonvolitional responses. Research also indicates that classical conditioning appears to be one method by which response expectancies are acquired, but response expectancy effects that are inconsistent with a conditioning hypothesis have also been documented. (134 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Testing the speech unit hypothesis with the primed matching task: phoneme categories are perceptually basic

The basic speech unit (phoneme or syllable) problem was investigated with the primed matching task. In primed matching, subjects have to decide whether the elements of stimulus pairs are the same or different. The prime should facilitate matching in as far as its representation is similar to the stimuli to be matched. If stimulus representations generate graded structure, with stimulus instances being more or less prototypical for the category, priming should interact with prototypicality because prototypical instances are more similar to the activated category than are low-prototypical instances. Rosch (1975a, 1975b) showed that, by varying the matching criterion (matching for physical identity or for belonging to the same category), the specific patterns of the priming x prototypicality interaction could differentiate perceptually based from abstract categories. By testing this pattern for phoneme and syllable categories, the abstraction level of these categories can be studied. After finding reliable prototypicality effects for both phoneme and syllable categories (Experiments 1 and 2), primed phoneme matching (Experiments 3 and 4) and primed syllable matching (Experiments 5 and 6) were used under both physical identity instructions and same-category instructions. The results make clear that phoneme categories are represented on the basis of perceptual information, whereas syllable representations are more abstract. The phoneme category can thus be identified as the basic speech unit. Implications for phoneme and syllable representation are discussed.     

Le phonème initial des noms inanimés et son effet sur l'identification du genre grammatical.

Studied the effects of the initial phoneme (either consonant or vowel) of inanimate nouns, and assessed the predictive value of noun endings relative to gender classes on the speed and accuracy of grammatical gender identification. The effect of category labels used to express choice of gender class on gender identification was also examined. Human subjects: 51 male and female Canadian adults (university students) (French-speaking). Ss were presented with 2 lists of common nouns designating inanimate objects that differed in the type of initial phoneme, the predictive strength of the word ending, and grammatical gender. Ss were asked to identify gender as rapidly as possible, using the un/une ("a") or masculine/feminine categories. The results were evaluated according to the number of errors in gender identification. Statistical tests were used. (English abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Parallel processing and initial phoneme criterion in naming words: Evidence from frequency effects on onset and rime duration.

This study reports 4 experiments that investigated the locus of temporal effects of printed word frequency in speeded-naming tasks. Response latencies and onset durations are shorter for high-frequency words compared with low-frequency words, but there is no effect of frequency on rime durations. These results can only be accounted for if (a) phonemes are activated in parallel and not sequentially from left to right and (b) the criterion to initiate pronunciation is based on the initial phoneme and not the whole word. In addition, the effect of word-initial phoneme characteristics on acoustic latency was investigated. The acoustic latency of words beginning with voiceless sibilants was less than that of words beginning with plosives, a pattern opposite that reported by R. Treiman, J. Mullennix, R. Bijeljac-Babic, and E. E. Richmond-Welty (1995). This difference was attributed to the lower sensitivity of voice keys compared with measures based on digitized responses. (PsycINFO Database Record (c) 2010 APA, all rights reserved)