Parallelism in the production of noun phrases: Experiments and reaction time models.

In 3 experiments, the authors investigated the temporal coordination of the processes involved in the production of noun phrases (NPs). Speakers of German described drawings of colored objects by noun phrases with or without a determiner (e.g., [the] red table). Participants received, for varying amounts of time, advance information about either the color or the object. For a small number of nouns in the response set, advance information about the color led to shorter reaction times for no-determiner NPs than for definite-determiner NPs. For larger numbers of nouns, advance information about the object led to an additional reaction time benefit for definite-determiner NPs. A mathematical model is shown to account for these results. This model assumes that articulation can be initiated only after the grammatical encoding of the whole noun phrase has been completed, but that phonological encoding of the 1st element of an utterance is initiated as soon as the necessary grammatical information is available. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Children's interpretation of generic noun phrases.

Generic utterances (e.g., "Cows say 'moo"') have 2 distinctive semantic properties: (a) Generics are generally true, unlike indefinites (e.g., "Bears live in caves" is generic; "I saw some bears in the cave" is indefinite), and (b) generics need not be true of all category members, unlike universal quantifiers (e.g., all, every, each). This article examined whether preschool children and adults appreciate both these features, using a comprehension task (Study 1) and an elicited production task (Study 2). In both tasks, 4-year-old children--like adults--treated generics as distinct from both indefinites ("some") and universal quantifiers ("all"). In contrast, 3-year-olds did not differentiate among generics, "all," and "some." By 4 years of age, generics emerge as a distinct semantic device. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The sentence-composition effect: Processing of complex sentences depends on the configuration of common noun phrases versus unusual noun phrases.

In 2 experiments, the authors used an eye tracking while reading methodology to examine how different configurations of common noun phrases versus unusual noun phrases (NPs) influenced the difference in processing difficulty between sentences containing object- and subject-extracted relative clauses. Results showed that processing difficulty was reduced when the head NP was unusual relative to the embedded NP, as manipulated by lexical frequency. When both NPs were common or both were unusual, results showed strong effects of both commonness and sentence structure, but no interaction. In contrast, when 1 NP was common and the other was unusual, results showed the critical interaction. These results provide evidence for a sentence-composition effect analogous to the list-composition effect that has been well documented in memory research, in which the pattern of recall for common versus unusual items is different, depending on whether items are studied in a pure or mixed list context. This work represents an important step in integrating the list-memory and sentence-processing literatures and provides additional support for the usefulness of studying complex sentence processing from the perspective of memory-based models. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Pragmatic constraint on the interpretation of complex noun phrases in Spanish and English.

Four experiments examined the role of a pragmatic constraint, the modifiability of noun phrases (NPs), in the modification of complex NPs. Experiment 1 demonstrated that NPs that had received relatively specific prior modification were less likely to take additional modification than NPs with less specific modification. This effect was obtained in both Spanish and English using 2 off-line tasks. Experiments 2 and 3 demonstrated on-line modifiability effects for both languages using a self-paced reading task. The results further suggest that although these Spanish and English speaking college students may have opposing modification preferences, modifiability constrained their interpretations in the same direction. The results of Experiment 4 suggest that discrepancies between the off-line results from Experiment 1 and the on-line results from Experiment 3 may be due to task differences. Implications are discussed in relation to current models of sentence processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Determiner selection in noun phrase production.

In 3 experiments, native speakers of German named pictures of 1 or 2 objects by producing singular or plural noun phrases consisting of a definite gender-marked determiner and a noun. When singular and plural determiners differed (masculine and neuter gender), naming latencies were longer for plural utterances than for singular utterances. By contrast, when singular and plural determiners were identical (feminine gender), no such effect was obtained. When participants produced bare nouns, the Gender x Number interaction disappeared. This pattern indicates that during the production of plural definite-determiner noun phrases, singular and plural determiners compete for selection. The resulting constraints on number and gender processing in noun phrase production are discussed in the framework of models of language production. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The selection of determiners in noun phrase production.

Picture-word interference experiments conducted with Italian speakers investigated how determiners are selected in noun phrase (NP) production. Determiner production involves the selection of a noun's syntactic features (mass or count, gender), which specify the type of determiner to be selected, and the subsequent selection of a particular phonological form (e.g., the/a in English). The research focused on the syntactic feature of gender. Results repeatedly failed to replicate the gender-congruity effect in NP production reported with Dutch speakers (longer latencies for target-distractor noun pairs with contrasting as opposed to the same gender). It is proposed that the discrepant results reflect processing differences in lexical access in Italian and Dutch: The selection of determiners in Italian, but not in Dutch, depends on phonological properties of the word that follows it in the NP. Evidence consistent with this explanation was obtained in an experiment in which determiner selection in NP production was hindered by conflicting phonological information in the NP. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Semantic and syntactic forces in noun phrase production.

Three experiments investigated semantic and syntactic effects in the production of phrases in Dutch. Bilingual participants were presented with English nouns and were asked to produce an adjective + noun phrase in Dutch including the translation of the noun. In 2 experiments, the authors blocked items by either semantic category or grammatical gender. Participants performed the task slower when the target nouns were of the same semantic category than when they were from different categories and faster when the target nouns had the same gender than when they had different genders. In a final experiment, both manipulations were crossed. The authors replicated the results of the first 2 experiments, and no interaction was found. These findings suggest a feedforward flow of activation between lexico-semantic and lexico-syntactic information. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Semantic and phonological activation in noun and pronoun production.

Speakers can refer to objects and other entities by nouns or pronouns. The present article investigated the production of gender-marked pronouns in German. Four picture-word interference experiments are reported, addressing 2 questions. First, is the lemma of a referent noun (i.e., the representation of the referent noun's semantic and syntactic properties) accessed when producing a pronoun? Second, if so, is this access confined to the lemma, or will the referent noun's phonological form be activated, too? The results suggest that in generating pronouns, speakers accessed the lemma of the referent noun, whereas its phonological form was not substantially activated. The results are discussed in the context of other recent experimental studies of pronoun and noun production. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Grammatical gender in noun phrase production: The gender interference effect in German.

Languages appear to differ in the way definite determiners are selected during noun phrase production. M. Miozzo and A. Caramazza (1999) proposed that a distinction should be made between early- and late-selection languages. In early-selection languages, the noun's gender uniquely specifies the definite determiner, whereas in late-selection languages the definite determiner can be specified only during the phonological encoding of the noun phrase. This hypothesis predicts that in picture–word interference experiments on noun phrase production in early selection languages like German, one should obtain a gender interference effect. In 2 experiments on German, this prediction is confirmed. The implications of these results for the proposed distinction between early- and late-selection languages are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Viewing and naming objects: eye movements during noun phrase production

Eye movements have been shown to reflect word recognition and language comprehension processes occurring during reading and auditory language comprehension. The present study examines whether the eye movements speakers make during object naming similarly reflect speech planning processes. In Experiment 1, speakers named object pairs saying, for instance, 'scooter and hat'. The objects were presented as ordinary line drawings or with partly deleted contours and had high or low frequency names. Contour type and frequency both significantly affected the mean naming latencies and the mean time spent looking at the objects. The frequency effects disappeared in Experiment 2, in which the participants categorized the objects instead of naming them. This suggests that the frequency effects of Experiment 1 arose during lexical retrieval. We conclude that eye movements during object naming indeed reflect linguistic planning processes and that the speakers' decision to move their eyes from one object to the next is contingent upon the retrieval of the phonological form of the object names.     

Syntactic constraints in the retrieval of homophone orthography.

In this experiment, syntactic constraints on the retrieval of orthography were investigated using homophones embedded in sentence contexts. Participants typed auditorily presented sentences that included a contextually appropriate homophone that either shared part of speech with its homophone competitor (i.e., was syntactically unambiguous) or had a different part of speech (was syntactically ambiguous). Each homophone was preceded by an unrelated word or a prime; primes were orthographically related to the competitor and shared or differed from the competitor’s part of speech. For syntactically unambiguous homophones, more errors occurred overall, and priming increased errors independent of the prime’s part of speech. For syntactically ambiguous homophones, priming occurred only following primes that shared part of speech with the competitor. These results demonstrate that written homophone errors can occur during lemma retrieval or during orthographic encoding, with the particular stage depending on the syntactic ambiguity of the homophone to be produced. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Errors as a function of noun concreteness.

Conducted 2 experiments to investigate the effects of stimulus and response noun concreteness in paired-associate learning. In Exp. I, error-success protocols were examined with the aid of a 2-stage Markov model. 64 undergraduates and spouses served as Ss. The 2 stages of the model have been interpreted in terms of storage and retrieval processes. In Exp. II, the production, retrieval, and decoding of mediators were examined. 15 undergraduates served as Ss. The model analysis indicated that the primary effect of noun concreteness, whether manipulated in the stimulus or response terms, was on the retrieval process. The data from Exp. II were consistent with this conclusion, in that concreteness affected the retrieval and decoding of mediators rather than the number of mediators generated. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Syntactic categories in the speech of young children.

Examined speech samples from 6 children (aged 2 yrs to 2 yrs 5 mo), with mean lengths of utterance (MLUs) ranging from 2.93 to 4.14, for evidence of 6 syntactic categories: determiner, adjective, noun, noun phrase, preposition, and prepositional phrase. Results indicate that all the Ss showed evidence of all categories, except for the lowest MLU S, whose performance was borderline on adjectives and prepositional phrases. It is suggested that children are sensitive early in life to abstract, formal properties of the speech they hear and must be credited with syntactic knowledge at an earlier point than heretofore generally thought. Results argue against various semantic hypotheses about the origin of syntactic knowledge. It is concluded that the methods and results may be applicable to future investigations of why children's early utterances are short, the nature of children's semantic categories, and the nature of the deviance in the speech of language-deviant children and adults. (41 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Syntactic comprehension in Parkinson's disease: Investigating early automatic and late integrational processes using event-related brain potentials.

Parkinson's disease (PD) has been associated with a general impairment of procedures and with an impairment of syntactic procedures in particular. The present study investigated comprehension processes in PD using event-related brain potentials (ERPs). PD patients and controls listened to sentences that were either correct or syntactically or semantically incorrect. The language-related ERP component correlated with semantic processes (N400) was present in both groups. In the syntactic domain, early automatic processes (early negativity) appeared normal in PD, whereas late integrational processes (P600) were modulated by this disease. The present findings suggest that the basal ganglia primarily do not support early automatic syntactic processes during comprehension but rather support processes of syntactic integration. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Independent temporal and pitch structures in determination of musical phrases.

In two experiments we addressed the roles of temporal and pitch structures in judgments of melodic phrases. Musical excerpts were rated on how good or complete a phrase they made. In Experiment 1, trials in the temporal condition retained the original temporal pattern but were equitonal; trials in the pitch condition retained the original pitch pattern but were equitemporal; and trials in the melody condition contained both temporal and pitch patterns. In Experiment 2, one pattern (pitch or temporal) was shifted in phase and recombined with the other pattern to create the pitch and temporal conditions. In the melody condition, both patterns were shifted together. In both experiments, ratings in the temporal and pitch conditions were uncorrelated, and the melody condition ratings were accurately predicted by a linear combination of the pitch and temporal condition ratings. These results were consistent across musicians with varying levels of experience. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hafnium powder production processes

The conditions for the production of hafnium nanopowders via magnesium-thermic reduction of chlorides and the effect of these conditions on the phase composition and dispersion of the powders are studied analytical chemistry, X-ray diffractin, and electron microscopy. The results of phase and structural analysis of the powders, the results of microscopic studies, the measured specific surface, and the data of atomicemission analysis are presented.