Word associations and the development of lexical memory

Endel Tulving's distinction between “episodic” and “semantic” memory defines changes with age in word association norms in a more informative and more comprehensive manner than the syntactic classifications normally used. The principal development as subjects mature is an episodic-semantic shift. Young children associate primarily to the stimulus's perceived contexts, older subjects to its abstract semantic content.     

Aphasics' selective deficits in appreciating grammatical agreements

This study attempted to dissociate in aphasic patients different aspects of grammatical capacity. Subjects were asked to evaluate sentences containing violations of agreements between pronouns and verbs. Agreements which are considered primarily structural in nature were violated (e.g., a surface object case like “them” placed in a surface subject sentential slot) while other violated agreements seemed to involve both structural and semantic information (e.g., lack of agreement between a pronoun and a verb in terms of the number of people performing the act). These violations were couched in one of three types of sentential frames which varied in terms of syntactic complexity (e.g., active declarative vs. passive syntactic voices). The results revealed that Broca's aphasics found agreement violations difficult to detect in complex syntactic frames. They were quite successful at detecting even violations of the largely structural “case” type of agreement, however, when couched in simpler syntactic frames. Fluent aphasics encountered more difficulty detecting violations of agreements involving both semantic and structural information than agreements which were primarily structural in nature, that is, regardless of the syntactic frame. These unique performance profiles suggest that Broca's aphasics may be agrammatic only with respect to certain aspects of a sentence's structure, and that fluent aphasics may also experience some selective—but different—grammatical deficits.     

Learning to divide the labor: an account of deficits in light and heavy verb production

Theories of sentence production that involve a convergence of activation from conceptual‐semantic and syntactic‐sequential units inspired a connectionist model that was trained to produce simple sentences. The model used a learning algorithm that resulted in a sharing of responsibility (or “division of labor”) between syntactic and semantic inputs for lexical activation according to their predictive power. Semantically rich, or “heavy”, verbs in the model came to rely on semantic cues more than on syntactic cues, whereas semantically impoverished, or “light”, verbs relied more on syntactic cues. When the syntactic and semantic inputs were lesioned, the model exhibited patterns of production characteristic of agrammatic and anomic aphasic patients, respectively. Anomic models tended to lose the ability to retrieve heavy verbs, whereas agrammatic models were more impaired in retrieving light verbs. These results obtained in both sentence production and single‐word naming simulations. Moreover, simulated agrammatic lexical retrieval was more impaired overall in sentences than in single‐word tasks, in agreement with the literature. The results provide a demonstration of the division‐of‐labor principle, as well as general support for the claim that connectionist learning principles can contribute to the understanding of non‐transparent neuropsychological dissociations.     

Metacognition in psychophysical judgment: An unfolding view of comparative judgments of mental workload

An experiment is reported in which it was found that when subjects were required to indicate which of two visual extents was more difficult to categorize as “long” or “short,” they executed these categorizations and then measured the distance of the representation of each stimulus from the long-short category boundary; the stimulus nearer the boundary was judged to be the more difficult. When they were requested to indicate which was easier to categorize, they selected the alternative that was farther. Coombs’s theory of data (1952, 1964) and his unfolding theory of preferential choice (1950, 1964) provided the conceptualization of metacognition in this psychophysical task context. Strong support for the probabilisitic version of unfolding theory was obtained from the observed selective effects of laterality on the levels of stochastic transitivity attained for various classes of triples and the reliably longer times for comparisons with bilateral pairs than with unilateral pairs. The semantic congruity effects obtained, together with the changes in the form of the relationship between probability and response time as a function of practice, can be best accounted for by an evidence accrual theory in which the distances from the active reference point are measured and compared with a criterion on each evidence accrual. No support is provided for the view that propositionally based semantic “ease”- “difficulty” codes serve as the basis for these metacognitive comparative judgments of ease and difficulty.     

The effect of knowledge and context in the elicitation of inferences in class-inclusion reasoning

Abstract

Two experiments were carried out with adult subjects to investigate the conditions of production of inferences in a problem-solving task involving reasoning about class inclusion. We tested the hypothesis that the production of appropriate inferences is facilitated whenever pieces of information are stored in memory that can be matched at least in part with the conclusion resulting from the inference. In Experiment 1, problems involving the same inferential pattern but belonging to three different domains were compared. The inclusion relations were of the type “is a kind of” (semantic domain), “more than” (being 8 years old is being more than 7 years old: logico-mathematical domain) or “what I have received on a given day is a part of what I have in the evening” (possession domain). In the semantic domain, the critical inference may be facilitated by the semantic network of concepts stored in memory. In the logico-mathematical domain, there is no information that corresponds to the critical inference, so that inferences have to be elaborated merely by use of general knowledge about the meaning of the relation. The possession domain is an intermediate case, since the inference corresponds to knowledge about relations in the possession domain. The results clearly support a memory-cueing hypothesis: There is a marked order of difficulty ranging from the logico-mathematical domain (most difficult) to the semantic domain (least difficult). In Experiment 2, equivalent problems using the same conceptual information were compared: The critical inference involved scanning a series of numbers either in direct order (more than 7 is 8, 9, 10) or in reverse order (8, 9, 10 is more than 7). The number of correct solutions was higher and the response latency much shorter for those problems in which the critical inference was of the type “more than 7 is 8, 9 or 10″.     

对充分条件句语义关系的概念理解与逻辑理解的相关与分离

实验用大学生被试考察了充分条件句语义关系表达形式（逻辑形式和概念形式）和条件句类型（五种条件句）对充分条件句语义关系理解的影响。实验结果发现,语义关系表达形式影响被试对条件句中必要性的语义关系理解,而不影响被试对条件句中充分性的语义关系理解,在对条件句前后件之间语义关系的逻辑理解成绩和概念理解成绩之间既有相关又有分离：对是否充分的语义关系的两种理解成绩之间存在相关一致,而对是否必要的语义关系的两种理解成绩之间存在分离;五种条件句在对后件对前件的必要性的知觉难易程度受条件句意义内容的影响而存在明显差异,这种差异导致被试对许可句和定义句的后件必要性理解成绩高于对偶然句、义务句和因果句的后件必要性理解成绩。     

Reinflating the semantic approach

The semantic, or model‐theoretic, approach to theories has recently come under criticism on two fronts: (i) it is claimed that it cannot account for the wide diversity of models employed in scientific practice—a claim which has led some to propose a “deflationary” account of models; (ii) it is further contended that the sense of “model” used by the approach differs from that given in model theory. Our aim in the present work is to articulate a possible response to these claims, drawing on recent developments within the semantic approach itself. Thus, the first is answered by utilizing the notion of a “partial structure”, first introduced in this context by da Costa and French in 1990. The second claim is undermined by consideration of van Fraassen's understanding of “model” which corresponds well with that evinced by modem mathematicians. This latter discussion, in particular, has an impact on the continuing debate regarding the relative merits of the semantic and syntactic views and the developments presented here can be taken to provide further support to the former.     

Auditory processing and perceptual abilities of “organic” and “functional” stutterers

The present investigation was undertaken to determine whether significant differences in auditory processing and perceptual abilities exist between (1) stutterers as a supposedly homogeneous group when compared with controls, (2) two differentiated subgroups of stutterers, and (3) either of the stuttering subgroups when separately compared with controls. Dichotic listening and masking level difference (MLD) tasks were administered to the two groups of school-age stutterers and an age-matched nonstuttering control group. Stuttering subjects were differentiated into “organic” and “functional” subgroups on the basis of neuropsychological test performances. Organic stutterers performed significantly poorer than did controls on one MLD experimental condition. Functional stutterers performed more like control subjects than like organic stutterers.     

Development of reading proficiency in English by bilingual children and their monolingual peers.

The semantic, syntactic, and graphophonic cueing techniques employed by 55 bilingual children and 39 monolingual peers when reading aloud in English were identified through miscue analysis. In contrast to earlier research in 1999 by Cline and Cozens no significant differences were found between the two groups on any of the techniques. Both bilingual and monolingual readers consistently used more graphophonic cues than syntactic or semantic cues but not significantly so. The authors discuss possible extraneous variables which may account in part for this unexpected result.     

语义联系对关联再认神经机制的调节

已有研究显示,关联再认可记录到分别反映双重加工模型的两阶段（即熟悉和回忆）的ERP成分（即FN400和LPC成分）,且具有高语义联系配对的关联再认可通过整合在基于熟悉加工的基础上完成。然而,不同语义联系对关联再认神经机制的影响及单个项目的熟悉和回忆加工的调节作用尚未揭示。为此,本研究比较了主题相关和类别相关图形关联再认的波形波幅异同,并分析了单个项目的熟悉和回忆加工对配对识别的影响。结果显示,主题相关和类别相关条件的旧配对、重组配对和“旧+新”配对均记录到反映熟悉加工的FN400成分,主题相关条件的旧配对、重组配对和“旧+新”配对均记录到反映回忆加工的LPC成分,类别相关条件的旧配对记录到LPC成分。表明关联再认的神经机制受语义联系所调节,单个项目的熟悉程度可影响配对识别时的神经机制,上述结论支持双重加工模型。     

Towards a neural basis of auditory sentence processing

Functional dissociations within the neural basis of auditory sentence processing are difficult to specify because phonological, syntactic and semantic information are all involved when sentences are perceived. In this review I argue that sentence processing is supported by a temporo-frontal network. Within this network, temporal regions subserve aspects of identification and frontal regions the building of syntactic and semantic relations. Temporal analyses of brain activation within this network support syntax-first models because they reveal that building of syntactic structure precedes semantic processes and that these interact only during a later stage.     

Memory for questions and amount of processing

Two experiments were carried out on how questions are remembered. Subjects watched a videotape of a series of simple events and then answered 18 questions about these events. The questions were all of the same general syntactic form (e.g., “Did the pencil fall against the jug on A?”, where A refers to a particular location). They were designed to elicit three sorts of answer: “yes,” “no” because the event took place at another location, and “no” because the event did not take place at all. After the subjects had answered the questions, they were given an unexpected test of their ability to recall them. A difference in the memorability of the questions was predicted on the basis of a procedural theory of comprehension and a hypothesis about memory subjects should cease to process a question when they realize that it concerns an event that did not take place, and such questions should be harder to remember because they are processed to a lesser degree than the other sorts of question. Experiment 1 confirmed the predictions, but its results in part could be accounted for by assuming that subjects recalled the original events and used them as a cue to remembering the questions. Experiment 2 eliminated this explanation by showing that when subjects do not have to answer certain questions, their recall of them is very poor. However, the same differences in the memorability of the three sorts of question were obtained for both answered and unanswered questions.     

The role of nonlinguistic stimuli and semantic relations in children's acquisition of grammatical utterances

Eighteen children, randomly assigned to one of six conditions, were trained in the use of two-word subject-verb (e.g. “mommy go”) utterances. The groups differed in (1) the number of different semantic relations theoretically underlying the subject-verb utterances on which the children were trained, and (2) the extent to which these semantic relations were associated with nonlinguistic events. The results indicated that the children acquired the subject-verb utterance forms more readily when they were also exposed to the events to which the utterances actually referred. Provided that the subject-verb utterances were related to ongoing events, the number of relations “underlying” these utterances did not appear critical. These results suggest that the child's acquisition of novel and grammatical utterances describing nonlinguistic stimuli highly similar to those in his natural environment are amenable to experimental control.     

A comparison of hyponym and synonym decisions

Is class inclusion (hyponymy) a more primitive or simpler semantic relation than synonymy? This question was addressed by comparing the time required to identify examples of the two relations in a semantic decision task. In two experiments subjects made truelfalse decisions about statements of the form “An A is a B.” In Experiment 1 category-member and synonym pairs were randomly intermixed; there was no difference between the two relations. In Experiment 2 one group was presented with the two relations randomly intermixed, as in Experiment 1 (mixed condition), while two other groups were each presented with just one of the relations (separate condition). In the separate condition responses were faster to class inclusion than to synonym pairs, while in the mixed condition there was no difference, as in Experiment 1. The results suggest that class inclusion may be a simpler relation than synonymity, although the difference may simply reflect the use to which the two relations are put in common use. The fact that the difference occurred in the separate but not in the mixed conditions suggests that the latencies reflected the evaluation of the relations against a decision criterion rather than directly reflecting lexical organization or everyday usage.     

On the semantic content of subcategorization frames

This paper investigates relations between the meanings of verbs and the syntactic structures in which they appear. This investigation is motivated by the enigmas as to how children discover verb meanings. Well-known problems with unconstrained induction of word meanings from observation of world circumstances suggest that additional constraints or sources of information are required. If there exist strong and reliable parallels between the structural and semantic properties of verbs, then an additional source of information about verb meanings is reliably present in each verb's linguistic context. Five experiments are presented which investigate the following hypothesis regarding the scope of these relations: The closer any two verbs in their semantic structure, the greater the overlap should be in their licensed syntactic structures. To investigate this hypothesis, data of two kinds were collected from different groups of subjects: (a) One group of subjects was asked to judge the semantic relatedness of verbs by selecting the semantic outlier in triads presented to them. (b) A second group of subjects was asked to judge the grammaticality of these same verbs in a large range of syntactic environments. These two types of data were then compared to assess the degree of correspondence in the two partitionings (syntactic and semantic) of the verb set. The findings, overall, support the view that the syntax of verbs is a quite regular, although complex, projection from their semantics. In conclusion, we discuss the kinds of features that are formally marked in syntactic structure and relate these to the problem of verb-vocabulary acquisition in young children.     

EFFECTS OF RATER-CONCEPT-SCALE INTERACTIONS AND USE OF DIFFERENT FACTORING PROCEDURES UPON EVALUATIVE FACTOR STRUCTURE

Subjects (N=225) drawn from ten subpopulations were asked to rate nine different concepts on 39 evaluative semantic differential scales plus the “strong-weak” and “fast-slow” scales. Nineteen separate factor analyses (principal factoring with iteration followed by Varimax rotation) were performed for: (1) all subjects rating all concepts, (2–10) all subjects rating each concept, (11) adult males rating all concepts, (12) adult females rating all concepts, (13) college students rating all concepts, (14) nonstudents rating all concepts, (15) fifth grade students rating all concepts, (16) all males rating “Liz Taylor,” (17) all females rating “Liz Taylor,” (18) all males rating “your father,” and (19) all females rating “your father.” Rotated factor loadings greater than .50 are displayed for all analyses. There is little apparent similarity among the factor structures. In addition, oblique (Oblimin) and Quartimax rotations are performed for two of the analyses (all subjects rating “LBJ” and “U.S. Government”). The three rotated factor structures for each concept differ radically.     

ERP Evidence for the Activation of Syntactic Structure During Comprehension of Lexical Idiom

The present study used event-related potentials to investigate whether the syntactic structure was activated in the comprehension of lexical idioms, and if so, whether it varied as a function of familiarity and semantic transparency. Participants were asked to passively read the “1+2” structural Chinese lexical idioms with each being presented following 3–5 contextual “1+2” (congruent-structure condition) or “2+1” structural Chinese phrases (incongruent-structure condition). The N400 ERP responses showed more positivity in congruent-structure condition relative to incongruent-structure condition in idioms with high familiarity and high semantic transparency, but less positivity in congruent-structure condition in idioms with high familiarity but low semantic transparency, idioms with low familiarity but high semantic transparency, and idioms with low familiarity and low semantic transparency. Our results suggest that syntactic structure, as the unnecessarity of lexical idiomatic words, was nevertheless activated, independent of familiarity and semantic transparency.     

Feuerbach's theory of object‐relations and its legacy in 20th century post‐Hegelian philosophy

This paper focuses on the way in which Feuerbach's attempt to develop a naturalistic, realist remodeling of Hegel's relational ontology, which culminated in his own version of “sensualism”, led him to emphasize the vulnerability of the subject and the role of affectivity, thus making object‐dependence a constitutive feature of subjectivity. We find in Feuerbach the first lineaments of a philosophical theory of object‐relations, one that anticipates the well‐known psychological theory of the same name, but one that also offers a broader metaphysical basis in which all types of “essential objects” are shown to matter to subjectivity. This Feuerbachian theory of object‐relations, the paper then argues, foreshadows a number of important developments in 20th century post‐Hegelian philosophy. In it can be found an anticipation of Adorno's later theory of mimesis. Equally, this theory already emphasizes the “libidinal” nature of intentionality, in a way that announces Merleau‐Ponty's ontology of the flesh. Finally, the last section of the article proposes a model with which we might reconstruct the way in which object‐relations and self‐relations can be brought together consistently. In this instance, Feuerbach uses concepts that announce Freud's notion of “primary narcissism”. One contemporary philosopher who has proposed a sophisticated model of subjectivity, in which primary narcissism is shown to complement object‐dependence, is Axel Honneth. The last section argues that Feuerbach's full image of subjective identity as reciprocal scaffolding of self‐ and object‐relations reminds strongly of Honneth's core concept of “positive self‐relation”.     

Syntactic and semantic contributions to sentence comprehension in agrammatism

Five aphasic subjects, who demonstrated agrammatic speech, and eight control subjects were presented with a sentence-picture matching task in which the factors of syntactic complexity, semantic reversibility, and sentence plausibility were independently varied. A subset of the sentences was patterned after that presented by A. Caramazza and E. Zurif (1976, Brain and Language, 5, 572-583) who concluded that Broca's aphasics rely on semantic constraints instead of syntactic information for sentence comprehension. Our aphasic subjects showed the same pattern of performance on this subset of sentences. However, the results from the full set of sentence materials we tested show that the aphasic subjects could perform some sentence level syntactic analyses, even when syntactic information conflicted with semantic constraints. The aphasic subjects correctly interpreted most active and passive sentences. They failed, however, to assign thematic roles and adjectives in center-embedded relative sentences, and instead relied on nonsyntactic information. These results show that both semantic and syntactic information contributed to sentence comprehension in the aphasic subjects we tested, in contrast to previous claims that syntactic and semantic processes are completely dissociated in this population.