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PubMed2006

Associated or dissociated effects of syllable frequency in lexical decision and naming.

Most empirical work investigating the role of syllable frequency in visual word recognition has focused on the Spanish language, in which syllable frequency seems to produce a classic dissociation: inhibition in lexical decision tasks but facilitation in naming. In the present study, two experiments were run in German, using identical stimulus materials, in a lexical decision task and a naming task. In both tasks, there was an inhibitory effect for words with a high-frequency first syllable. This pattern of results, suggesting a stronger weight of lexical access in the naming process in German than in Spanish, is discussed with regard to the issue of stress assignment in the two languages and within the framework of word production models. Items, mean response latencies, and accuracy rates per item for both experiments can be downloaded from www.psychonomic.org/archive.

Association↗
PubMed2003

The role of axes of elongation and symmetry in rotated object naming.

Many theorists have postulated that axes of elongation and/or symmetry play an important role in the recognition of objects. In this paper, evidence is presented that mitigates this claim from independent assessments of the effects of axes of elongation or symmetry on the time to name rotated line drawings of common objects. This conclusion was further supported in a stronger test in which both of these variables were orthogonally controlled, the aspect ratio of elongation was manipulated,and only objects that were completely geometrically symmetrical or asymmetrical were used. In all the experiments, objects were named for several blocks to determine the influence of these variables on effects of orientation with practice. Symmetry was found to diminish the effects of orientation after practice in naming the object set, and the effects of the most extreme orientation tested (120 degrees from upright) were diminished when both axes defined the same orientation, relative to when they defined different orientations. Contrary to many theories, these findings relegate the axes of symmetry and elongation to relatively minor roles during object identification.

Adolescent↗
PubMed2002

Are inferences from stereotyped role names to characters' gender made elaboratively?

Two experiments provided evidence that gender stereotype inferences from role names--for example, that a surgeon is (probably) male--are made in a forward, elaborative, direction. We used sentences in which a person's gender was never made explicit, but was implied in two different ways. The two ways were by the use of a role name, and by mentioning an item of clothing (e.g., a bikini) or a biological characteristic (e.g., giving birth) that is typically associated with females or males. The two pieces of information (role name and clothing/biological characteristic) were presented in different orders in the two experiments. In both cases a mismatch between the associated genders slowed reading, showing that gender information has been activated. It is argued that if an inference about gender is made on the basis of the second piece of information, hence slowing comprehension, it is unlikely that the inference about gender based on the first piece of information was not made immediately.

Female↗
PubMed2002

The masked onset priming effect in naming: computation of phonology or speech planning?

We investigated factors that modulate the presence of the masked onset priming effect in three naming experiments. In Experiment 1, we showed that the masked onset priming effect is found with regular words, but not with exception words, replicating the finding reported by Forster and Davis (1991). In Experiment 2, we used the conditional naming task in which words are mixed with nonwords and participants are instructed to name the item only if it is a word. The masked onset priming effect was eliminated in this experiment, but the regularity effect remained. In Experiment 3, regular and irregular words were mixed randomly, rather than in separate blocks as in Experiment 1. This reduced the size of the regularity effect, and the masked onset priming effect was again absent. We argue that these results, taken as a whole, are better interpreted within the view that the masked onset priming effect has its origin in the preparation of a speech response, rather than within the original dual-route interpretation proposed by Forster and Davis.

Electronic Data Processing↗
PubMed2001

Naming the color of a word: is it responses or task sets that compete?

Subjects named the colors in which high- and low-frequency words and pronounceable nonwords, otherwise matched, were displayed. Color naming was slower for all three item types than for visually equivalent strings of nonalphanumeric symbols but was no slower for words than for nonwords, nor for high-frequency words than for low-frequency words. Unpronounceable letter strings had intermediate color-naming latencies. However, frequency and lexical status had large effects on latency for reading the same words and pseudowords aloud. Interference is thus predicted not by the strength of association between a letter string and its pronunciation but by the presence of word-like constituents. We argue that the interference from an unprimed noncolor word is due to, and isolates, one of two components of the classic Stroop effect: competition from the whole task set of reading. The other component, response competition, occurs only when lexical access is sufficiently primed.

Adult↗
PubMed2001

Word reading and picture naming in Italian.

Results from two separate norming studies of lexical access in Italian were merged, permitting a comparison of word-reading and picture-naming latencies and the factors that predict each one for an overlapping subsample of 128 common nouns. Factor analysis of shared lexical predictors yielded four latent variables: a frequency factor, a semantic factor, a length factor, and a final factor dominated by frication on the initial phoneme. Age of acquisition (AoA) loaded highly on the first two factors, suggesting that it can be split into separate sources of variance. Regression analyses using factor scores as predictors showed that word reading and picture naming are both influenced by the frequency/AoA factor. The semantics/AoA factor influenced only picture naming, whereas the length and frication factors influenced only word reading. Generalizability of these results to other languages is discussed, including potential effects of cross-language differences in orthographic transparency.

Adult↗
PubMed2000

Naming times and standardized norms for the Italian PD/DPSS set of 266 pictures: direct comparisons with American, English, French, and Spanish published databases.

The present study provides Italian normative measures for 266 line drawings belonging to the new set of pictures developed by Lotto, Dell'Acqua, and Job (in press). The pictures have been standardized on the following measures: number of letters, number of syllables, name frequency, within-category typically, familiarity, age of acquisition, name agreement, and naming time. In addition to providing the measures, the present study focuses on indirect and direct comparisons (i.e., correlations) of the present norms with databases provided by comparable studies in Italian (in which normative data were collected with Snodgrass & Vanderwart's set of pictures; Nisi, Longoni, & Snodgrass, 2000), in British English (Barry, Morrison, & Ellis, 1997), in American English (Snodgrass & Vanderwart, 1980; Snodgrass & Yuditsky, 1996), in French (Alario & Ferrand, 1999), and in Spanish (Sanfeliu & Fernandez, 1996).

Adult↗
PubMed1997

The syllable's role in word naming.

In a series of experiments, the masked priming paradigm with very brief prime exposures was used to investigate the role of the syllable in the production of English. Experiment 1 (word naming task) showed a syllable priming effect for English words with clear initial syllable boundaries (such as BALCONY), but no effect with ambisyllabic words targets (such as BALANCE, where the /l/belongs to both the first and the second syllables). Experiment 2 failed to show such syllable priming effects in the lexical decision task. Experiment 3 demonstrated that for words with clear initial syllable boundaries, naming latencies were faster only when primes formed the first syllable of the target, in comparison with a neutral condition. Experiment 4 showed that the two possible initial syllables of ambisyllabic words facilitated word naming to the same extent, in comparison with the neutral condition. Finally, Experiment 5 demonstrated that the syllable priming effect obtained for CV words with clear initial syllable boundaries (such as DIVORCE) was not due to increased phonological and/or orthographic overlap. These results, showing that the syllable constitutes a unit of speech production in English, are discussed in relation to the model of phonological and phonetic encoding proposed by Levelt and Wheeldon (1994).

Decision Making↗
PubMed2000

The left-to-right nature of the masked onset priming effect in naming.

Two experiments were performed to investigate the nature of the masked onset priming effect in naming, that is, the facilitation in naming latency that is observed when a target shares the initial grapheme/phoneme with a masked prime. Experiment 1 showed that the effect is not due to position-independent letter priming, since the naming of nonword targets preceded by masked primes was facilitated only if the prime shared the initial letter with the target (e.g., suf-SIB) and not if the prime shared the final letter (e.g., mub-SIB). Experiment 2 showed that the effect reflects the sharing of onsets rather than the initial letter, since facilitation due to an overlap of the initial letter was observed only for the simple onset target (e.g., penny-PASTE) for which the letter corresponded to the onset, and not for complex onset targets (e.g., bingo-BLISS). It is argued that the serial nature of the masked onset priming effect is best interpreted as the planning of articulation, rather than as the computation of phonology from orthography.

Cognition↗
PubMed1999

Feature centrality: naming versus imagining.

Being white is central to whether we call an animal a "polar bear," but it is fairly peripheral to our concept of what a polar bear is. We propose that a feature is central to category naming in proportion to the feature's category validity--the probability of the feature, given the category. In contrast, a feature is conceptually central in a representation of the object to the extent that the feature is depended on by other features. Further, we propose that naming and conceptual centrality are more likely to disagree for features that hold at more specific levels (such as is white, which holds only for the specific category of polar bear) than for features that hold at intermediate levels of abstraction (such as has claws, which holds for all bears). In support of these hypotheses, we report evidence that increasing the abstractness of category features has a greater effect on judgments of conceptual centrality than on judgments of name centrality and that other category features depend more on intermediate-level category features than on specific ones.

Adult↗
PubMed1986

[82 drawings and their most common names, image agreement, adequacy of complexity, and familiarity].

For use in experiments investigating semantic processing of nonverbal materials, 82 drawings of familiar objects are presented, along with their most common names, the mean ratings of image agreement, adequacy of complexity, and familiarity. Most concepts were exemplars from one of 10 familiar categories (animals, insects, vehicles etc.). Names and ratings were obtained from 81 undergraduates and graduate students. The moderate correlation (r = .40) was found between percentage of the most common name and image-agreement rating, but the other correlations were negligible. The mean ratings of three variables except adequacy of complexity were compared with those of Matsukawa (1983), obtained from Japanese subjects using Snodgrass and Vanderwart's (1980) drawings. The high correlation between familiarity of both studies (r = .88) indicates that this variable is not affected by visual characteristics of the particular stimulus set. The possible uses of the present stimulus set were suggested.

Adolescent↗
PubMed1997

[Information processing in Stroop-like picture naming tasks by preschool children].

This study examined the difference between preschool (6-year-olds) children and adults in semantic information processing in line-drawn picture naming, using two types of Stroop-like picture naming tasks. In Experiment 1, voices (i.e., lexical information), and in Experiment 2, pictures (i.e., semantic information) were used as distracters. Subjects were asked to name target pictures as quickly as possible, ignoring distracters. To clarify the effect of semantic relations on the amount of interference, four types of target-distracter semantic relations were used as experimental conditions: same stimulus (SS), same category (SC), different category (DC), and control (C). To investigate the time course of processing, stimulus onset asynchrony (SOA) between target and distracter was varied. The results indicated that the patterns of reaction time showed more remarkable difference between children and adults in Experiment 1 than in Experiment 2. These results were discussed on the basis of Glaser and Glaser (1989)'s model in which semantic memory and lexicon were separate.

Adult↗
PubMedDate not supplied

The named nurse in perspective.

This is the first of three articles that concentrate on the implications of the named nurse initiative for nursing practice. The way the initiative has been put into practice in Sheffield Health Authority will be described next week, followed by Steve Wright's analysis of the value of wearing name badges. To set the scene, Royal College of Nursing General Secretary Christine Hancock takes a wider look at the concept of the named nurse and relates it to systems of organising nursing that are in general use.

Humans↗
PubMed1998

The importance of the physician in the generic versus trade-name prescription decision.

I examine the importance of physicians in the process by which patients receive either trade-name or generic drugs. Using a dataset on physicians, their patients, and the multisource drugs prescribed, I find that almost all physicians prescribe both types of drugs to their patients, but some physicians are more likely to prescribe generic drugs while other physicians are more likely to prescribe trade-name drugs. Very little of the prescription decision can be explained by observable characteristics of individual patients, but all of the evidence indicates that physicians are indeed an important agent in determining whether patients receive either trade-name or generic drugs.

Decision Making↗
PubMed1999

Word decoding and picture naming in children with a reading disability.

Poor readers and reading age level matched controls performed a primed picture-naming task and a lexical decision task; their vocabulary performance was also assessed. Picture-naming data showed that poor readers were slower in the repeated prime condition only. This effect could not be explained by differences in vocabulary. Semantically related primes were ineffective compared with the repeated prime condition. Lexical decision data replicated the nonword reading deficit hypothesis: Poor readers were slower, particularly on the pseudowords and nonwords. A separately conducted analysis of the real word data showed strong effects of acquisition age. Late-acquired words had longer reaction times. Vocabulary performance as the covariate could explain the between-groups effects on this task. Semantic processing, as it is involved in picture naming, and phonological processing, as it is involved in decoding printed words, appear to be 2 relatively independent sources of reading deficits.

Adolescent↗
PubMed1999

Functional alterations of cardiac (Na,K)-ATPase in L-NAME induced hypertension.

(Na,K)-ATPase, an enzyme involved in the active translocation of Na+ and K+ ions across cell membranes was shown to be affected by nitric oxide (NO) in various tissues. In the present study the functional alterations of (Na,K)-ATPase after chronic inhibition of nitric oxide synthesis were studied in rat hearts. Four weeks lasting administration of an L-arginine analogue, the N(G)-nitro-L-arginine methyl ester (L-NAME) induced an increase in the systolic blood pressure of about 36%. In this hypertension the kinetic parameters Km and Vmax for ATP-activation of the (Na,K)-ATPase did not show any significant changes. Activation of the enzyme by its cofactor Na+ revealed no change in the Vmax, but the K(Na) increased by 50%. Two weeks after terminating the administration of L-NAME the blood pressure returned to control values. In these conditions the activity of (Na,K)-ATPase increased, due to enlarged affinity of the ATP-binding site as revealed from the diminished Km value for ATP. The K(Na) value for activation with Na+ returned to control value. Our findings indicate that there is no change in energy utilization by the (Na,K)-ATPase during L-NAME induced hypertension in the heart. The transport properties of the enzyme are deteriorated, due to its decreased sensitivity to Na+. This inhibition of the (Na,K)-ATPase might be responsible for the increase of [Na+]i during lowered NO synthesis. In hearts from rats that recovered from the hypertension, the (Na,K)-ATPase increases its activity due to improved ATP binding properties.

Animals↗
PubMed1999

Cardiac membrane proteins and phospholipids in L-NAME induced hypertension.

This study deals with qualitative alterations of membranes in cardiac cells after chronic inhibition of NO synthesis in rats induced by administration of N(G)-nitro-L-arginine methyl ester (L-NAME) in a dose 40 mg/kg/day for 4 weeks. Concentration of proteins did not change either in the cytosolic fraction or in the particulate fraction of the cardiac homogenate from L-NAME treated rats. The concentration of phospholipids and consequently the ratio of phospholipids to membrane proteins increased by 100% and 88%, respectively. The concentration of conjugated dienes (CD), often used as an indirect marker for the production of free oxygen radicals, increased by 141% after calculation per gram of tissue. However, evaluation of CD concentration directly in phospholipids revealed no change, suggesting that phospholipids in cardiac tissue after L-NAME treatment were not damaged additionally, by increased level of free oxygen radicals. The increase of the CD concentration in the cardiac tissue is therefore, a consequence of the elevated phospholipid concentration.

Animals↗
PubMed1998

[Changes of nitric oxide synthase in hypoxic pulmonary hypertension and the effect of L-arg and L-NAME on pulmonary circulation].

OBJECTIVE: To study the role of nitric oxide (NO) in Hypoxic pulmonary hypertension (HPH). METHODS: NADPH-d and immunohistochemistry were used to study the expression and localization of constructive and inducible nitric oxide synthase (cNOS iNOS) in the lungs of normoxia and HPH rats, at the same time, the effects of L-arginine (L-arg) and nitro-L-arginine-methyl-ester (L-NAME) on normoxic and hypoxic pulmonary circulation were investigated. RESULTS: NADPH-d positive expression was detected in the endothelium and smooth muscle cells (SMC) of large pulmonary vessels (PV) and in the epithelium and SMC of bronchi in the HPH group, but negative in the endothelium and SMC of small PV in normoxia. Hypoxia not only inhibited the expression of cNOS in the endothelium and SMC of PV and epithelium of bronchi, but also induced the expression of iNOS in the endothelium and SMC of PV and SMC of bronchi. Administration of L-NAME in normoxia had no effect on pulmonary circulation. The effect of administration of L-arg and L-NAME in hypoxia on right ventricular hypertrophy and remodeling of PV had no significance, compared with simple hypoxia. CONCLUSION: The inhibition of cNOS may contribute to the occurrence of HPH, but induced iNOS may depress the development of HPH.

Animals↗