Adults' Acquisition of Novel Dimension Words: Creating a Semantic Congruity Effect

The semantic congruity effect is exhibited when adults are asked to compare pairs of items from a series, and their response is faster when the direction of the comparison coincides with the location of the stimuli in the series. For example, people are faster at picking the bigger of 2 big items than the littler of 2 big items. In the 4 experiments presented, adults were taught new dimensional adjectives (mal/ler and borg/er). Characteristics of the learning situation, such as the nature of the stimulus series and the relative frequency of labeling, were varied. Results revealed that the participants who learned the relative meaning of the artificial dimensional adjectives also formed categories and developed a semantic congruity effect regardless of the characteristics of training. These findings have important implications for our understanding of adult acquisition of novel relational words, the relationship between learning such words and categorization, and the explanations of the semantic congruity effect.     

Adults' acquisition of novel dimension words: creating a semantic congruity effect

The semantic congruity effect is exhibited when adults are asked to compare pairs of items from a series, and their response is faster when the direction of the comparison coincides with the location of the stimuli in the series. For example, people are faster at picking the bigger of 2 big items than the littler of 2 big items. In the 4 experiments presented, adults were taught new dimensional adjectives (mal/ler and borg/er). Characteristics of the learning situation, such as the nature of the stimulus series and the relative frequency of labeling, were varied. Results revealed that the participants who learned the relative meaning of the artificial dimensional adjectives also formed categories and developed a semantic congruity effect regardless of the characteristics of training. These findings have important implications for our understanding of adult acquisition of novel relational words, the relationship between learning such words and categorization, and the explanations of the semantic congruity effect.     

Linguistic and conceptual influences on adjective acquisition in 24- and 36-month-olds

Two hundred forty English-speaking toddlers (24- and 36-month-olds) heard novel adjectives applied to familiar objects (Experiment 1) and novel objects (Experiment 2). Children were successful in mapping adjectives to target properties only when information provided by the noun, in conjunction with participants' knowledge of the objects, provided coherent category information: when basic-level nouns or superordinate-level nouns were used with familiar objects, when novel basic-level nouns were used with novel objects, and--for 36-month-olds--when the nouns were underspecified with respect to category (thing or one) but participants could nonetheless infer a category from pragmatic and conceptual knowledge. These results provide evidence concerning how nouns influence adjective learning, and they support the notion that toddlers consider pragmatic factors when learning new words.     

Adjectives really do modify nouns: the incremental and restricted nature of early adjective acquisition

By 24 months, most children spontaneously and correctly use adjectives. Yet prior laboratory research that has studied lexical acquisition in young children reports that children up to 3-years-old map novel adjectives to object properties only in very limited situations (Child Development 59 (1988) 411; Child Development 64 (1993) 1651; Child Development 71 (2000) 649; Developmental Psychology 36 (2000) 571; Child Development 69 (1998) 1313). In Experiments 1 and 2 we introduced 36-month-olds (Experiment 1) and 24-month-olds (Experiment 2) to novel adjectives while providing rich referential and syntactic information to indicate what the novel words mean. Specifically, we used a given novel adjective to describe multiple familiar objects which shared a salient property; in addition we used the adjectives in full noun phrases, not in conjunction with pronouns. Under these conditions, both groups mapped novel adjectives onto object properties. In Experiment 3 we asked whether the rich referential information was responsible for the successful outcome of the previous two experiments; we introduced novel adjectives to 2- and 3-year-olds as in Experiments 1 and 2, but the adjectives modified nouns of vague (very general) reference ("one", or "thing"). Under these conditions the children failed. We suggest that young word learners require access to the taxonomy of the object type so that the relevant property can be identified. The taxonomically specific nouns of Experiments 1 and 2 accomplish this, whereas the more general, semantically bleached nominals in Experiment 3 do not. Taken together with related findings in the literature, these findings favor an account of lexical acquisition in which layers of information become available incrementally, as a consequence of solving prior parts of the learning problem.     

Knowing what a novel word is not: Two-year-olds 'listen through' ambiguous adjectives in fluent speech

Three studies investigated how 24-month-olds and adults resolve temporary ambiguity in fluent speech when encountering prenominal adjectives potentially interpretable as nouns. Children were tested in a looking-while-listening procedure to monitor the time course of speech processing. In Experiment 1, the familiar and unfamiliar adjectives preceding familiar target nouns were accented or deaccented. Target word recognition was disrupted only when lexically ambiguous adjectives were accented like nouns. Experiment 2 measured the extent of interference experienced by children when interpreting prenominal words as nouns. In Experiment 3, adults used prosodic cues to identify the form class of adjective/noun homophones in string-identical sentences before the ambiguous words were fully spoken. Results show that children and adults use prosody in conjunction with lexical and distributional cues to ‘listen through’ prenominal adjectives, avoiding costly misinterpretation.     

Learning color words involves learning a system of mappings.

This research examines the difficulty children encounter when acquiring 2 specific sets of adjectives, color and size words, and suggests that children must acquire a system of mapping in learning these words. Children were assessed on 4 types of mappings (word-word maps, property-property maps, word-property maps, and word-word-property maps) by completing 3 color tasks. Children also participated in comparable tasks for size words. In Study 1, 13 two-year-olds were followed longitudinally at 3-week intervals. In Study 2, 56 two-year-olds participated in a cross-sectional replication. The results indicate that children acquire color maps in a characteristic order. Children demonstrated a different pattern of acquisition for size words. The results suggest that learning word associations may promote color word acquisition and that learning color words may promote selective attention to color.     

From synonyms to homonyms: exploring the role of metarepresentation in language understanding

Doherty and Perner (Metalinguistic awareness and theory of mind: just two words for the same thing? Cognitive Development, 13 (1998), 279–305) report that children’s understanding of synonyms and false belief is dependent on an understanding of the representational mind. Experiment 1 extends this finding by examining children’s understanding of homonyms. Children aged 3 and 4 years were asked to judge whether a puppet correctly selected the second member of a homonym pair. Performance on this task was strongly associated with performance on the false belief task even after chronological and verbal mental age had been accounted for. Experiment 2 incorporated two new tasks: a synonyms task and an adjectives task. Understanding of synonyms and homonyms significantly predicted performance on the false belief task. However, once chronological age was accounted for, only performance on the homonyms task did so. The difficulty experienced on the homonyms task was not due to a reluctance to acknowledge that the puppet can point to a different picture when the the same word label is used twice. Children had no difficulty on the adjectives task when the puppet had to point to a different picture described using the same adjective. The suggestion that the understanding of synonyms, homonyms and false belief are related by a common insight into the representational mind is therefore not supported.     

Mapping Words to the World in Infancy: Infants' Expectations for Count Nouns and Adjectives

Three experimentsdocumentthat 14-month-old infants'construal of objects (e.g., purple animals) is influenced by naming, that they can distinguish between the grammatical form noun and adjective, and that they treat this distinction as relevant to meaning. In each experiment, infants extended novel nouns (e.g., "This one is a blicket") specifically to object categories (e.g., animal), and not to object properties (e.g., purple things). This robust noun-category link is related to grammatical form and not to surface differences in the presentation of novelwords (Experiment 3). Infants'extensions of novel adjectives (e.g., "This one is blickish") were more fragile: They extended adjectives specifically to object properties when the property was color (Experiment 1), but revealed a less precise mapping when the property was texture (Experiment 2). These results reveal that by 14 months, infants distinguish between grammatical forms and utilize these distinctions in determining the meaning of novel words.     

Specifying the scope of 13-month-olds'' expectations for novel words

Recent research has documented that for infants as young as 12–13 months of age, novel words (both count nouns and adjectives) highlight commonalities among objects and, in this way, foster the formation of object categories. The current experiment was designed to capture more precisely the scope of this phenomenon. We asked whether novel words (count nouns; adjectives) are linked specifically to category-based commonalities from the start, or whether they also direct infants' attention to a wider range of commonalities, including property-based commonalities among objects (e.g. color, texture). The results indicate that by 12–13 months, (1) infants have begun to distinguish between novel words presented as count nouns versus. adjectives in fluent, infant-directed speech, and (2) infants expectations for novel words accord with this emerging sensitivity.     

A Cross-Linguistic Examination of the Noun-Category Bias: Its Existence and Specificity in French- and Spanish-Speaking Preschool-Aged Children

Previous research has revealed that English-speaking preschoolers expect that a novel count noun (but not a novel adjective), applied to an individual object, may be extended to other members of the same basic or superordinate level category. However, because the existing literature is based almost exclusively on English-speakers, it is unclear whether this specific expectation is evident in children acquiring languages other than English. The experiments reported here constitute the first cross-linguistic, developmental test of the noun-category linkage. We examined monolingual French- and Spanish-speaking preschool-aged children's superordinate level categorization in a match-to-sample task. Target objects were introduced with (a) novel words presented as count nouns (e.g., “This is afopin”), (b) novel words presented as adjectives (e.g., “This is afopishone”), or (c) no novel words. Like English-speakers, French- and Spanish-speakers extended count nouns consistently to other category members. This is consistent with our prediction that the mapping between count nouns and object categories may be a universal phenomenon. However, children's extension of novel adjectives varied across languages. Like English-speakers, French-speakers did not extend novel adjectives to other members of the same category. In contrast, Spanish-speakers did extend novel adjectives, like count nouns, in this fashion. This is consistent with our prediction that the mappings between adjectives and their associated applications vary across languages. The results provide much-needed cross-linguistic support for the noun-category linkage and illustrate the importance of the interplay between constraints within the child and input from the language environment.     

Short-term retention of lexical-semantic representations: implications for speech production

Patients with semantic STM deficits have difficulty comprehending sentences that require the retention of several lexical-semantic representations prior to their integration into higher-level propositions (Martin, 1995: Martin & Romani. 1994). In Experiment 1, patients with a semantic retention deficit had difficulty with the same type of constructions in speech production, namely noun phrases with one or two prenominal adjectives. Their performance improved when they could produce the nouns and adjectives in sentence form, which placed smaller demands on lexical-semantic retention. In Experiment 2 these patients were better able to produce syntactically complex sentences than the prenominal adjective phrases having an equal number of content words, indicating that the findings in Experiment 1 could not be attributed to syntactic complexity. These patients produced more pauses in the sentence constructions in Experiments 1 and 2, suggesting that the timing of such productions is abnormal. In contrast, patient EA, with a phonological retention deficit, performed better than the patients with a semantic retention deficit on the AN phrases despite having a smaller STM span. She showed no significant benefit of producing sentence compared to phrase constructions, and also made fewer and shorter pauses than the other patients. These findings support the multiple capacities view of verbal working memory and suggest that the same semantic retention capacity used in language comprehension is used in speech production.     

The origins and evolution of links between word learning and conceptual organization: new evidence from 11‐month‐olds

How do infants map words to their meaning? How do they discover that different types of words (e.g. noun, adjective) refer to different aspects of the same objects (e.g. category, property)? We have proposed that (1) infants begin with a broad expectation that novel open‐class words (both nouns and adjectives) highlight commonalities (both category‐ and property‐based) among objects, and that (2) this initial expectation is subsequently fine‐tuned through linguistic experience. We examine the first part of this proposal, asking whether 11‐month‐old infants can construe the very same set of objects (e.g. four purple animals) either as members of an object category (e.g. animals) or as embodying a salient object property (e.g. four purple things), and whether naming (with count nouns vs. adjectives) differentially influences their construals. Results support the proposal. Infants treated novel nouns and adjectives identically, mapping both types of words to both category‐ and property‐based commonalities among objects.     

Selective attention to Stroop dimensions: Effects of baseline discriminability,response mode,and practice

The framework of dimensional interaction was used to test the hypothesis that the Stroop effect is partially rooted in mismatches in baseline discriminability, with stimulus differences along the word dimension typically exceeding stimulus differences along the color dimension. Subjects made speeded classifications, with either keypresses or vocalizations, of either words or colors. Stroop congruity and Garner interference were measured under conditions in which discriminabilities were (1) matched (Experiments1 and 4), (2) mismatched in favor of colors (Experiment 2), or (3) mismatched in favor of words (Experiment3). When matched, colors and words appeared separable, with small interactive effects being reduced or eliminated through practice. When mismatched, asymmetric Stroop and Garner effects emerged, with the more discriminable dimension disrupting classification of the less discriminable dimension. Asymmetric effects were obtained in both response modes, and were not alleviated by practice. We conclude that (1) the Stroop effect is an optional effect, and (2) unequal discriminability causes a mandatory failure of selective attention.     

The comprehension of relative,absolute, and contrastive adjectives by young children

Three types of adjectives-relative, contrastive, and absolute-were presented in standard and comparative contrasts to preschool children in a picture-choice paradigm. Proportion of errors in picture choices showed the predicted effect of greater difficulty for comparative than for standard terms. Latency data showed that the responses to comparative forms of absolute and contrastive adjectives were significantly slower than responses to their standard forms, and were also slower than responses to the comparative forms of the relative terms which did not differ from their standard forms. These data support the interpretation that the classes of relative, contrastive, and absolute adjectives are processed differently by young children. Factors of cognitive complexity that influence the order of difficulty are considered.     

Investigating word class effects in first and second languages

According to Zyzik in 2009, only a few recent studies have investigated similarities in use of words in comprehension of first languages (L1) and second languages (L2). Furtner, Rauthmann, and Sachse showed a rank order of word classes by frequency of eye-gaze regression when reading other difficult words: nouns, adjectives, closed-class words, verbs. The hypothesis was that a L1-L2 word-class similarity effect between German (L1) and English (L2) would occur, and this was tested with jumbled word reading of English text (wherein letters within words Shave been jumbled) and eye-tracking by 141 participants. Analyses of regressive fixations from one word class to others showed that nouns were regressed most often and there was a rank order of importance among the word classes apparently used to enhance comprehension of other difficult words (nouns, adjectives, verbs, dosed-class words). Thus, previous findings for L1 were largely replicated. Findings are discussed regarding language acquisition.     

The DSM-III-R Categorical Personality Disorder Diagnoses: A Critique and an Alternative

Thepurpose of this article is to review the Diagnostic andStatistica1 Manual ofMental Disorders (DSM-III-R; American Psychiatric Association, 1987) categorical diagnosis of personality disorders and to provide an alternative. The results from a variety of studies indicate that the categorical distinctions provided in DSM-ZII-R lack empirical support and that a dimensional model of classification would provide more reliable and valid assessments of personality disorder. The arguments favoring the categorical model--familiarity, tradition, simplicity, ease, and consistency with clinical decisions-are also addressed An alternative approach based on the five-factor model of personality is presented. Two concerns regarding this model are the relevance of the openness-to-experience dimension and the differentiation of abnormality from normality, but neither concern is problematic when personality disorders are understood to be maladaptive variants of normal personality traits.     

Priming Effects in Lexical Decisions on Sex-Stereotypical Adjectives

To investigate the semantic memory organization of gender concepts, we used gender words to prime lexical decisions on stereotypically feminine and masculine adjectives (e.g., emotional and aggressive, respectively) in two experiments. Under certain conditions, gender primes facilitated performance on both stereotypically appropriate and inappropriate adjectives. Female subjects were facilitated when either the word woman or man primed stereotypically feminine adjectives. Male subjects were facilitated when the word male primed either stereotypically masculine or feminine adjectives (and they were inhibited when woman primed these adjectives, especially the masculine ones). These results suggest overlap in the memory representations of traits associated with the two genders.     

Phonological perception by birds: budgerigars can perceive lexical stress

Metrical phonology is the perceptual “strength” in language of some syllables relative to others. The ability to perceive lexical stress is important, as it can help a listener segment speech and distinguish the meaning of words and sentences. Despite this importance, there has been little comparative work on the perception of lexical stress across species. We used a go/no-go operant paradigm to train human participants and budgerigars (Melopsittacus undulatus) to distinguish trochaic (stress-initial) from iambic (stress-final) two-syllable nonsense words. Once participants learned the task, we presented both novel nonsense words, and familiar nonsense words that had certain cues removed (e.g., pitch, duration, loudness, or vowel quality) to determine which cues were most important in stress perception. Members of both species learned the task and were then able to generalize to novel exemplars, showing categorical learning rather than rote memorization. Tests using reduced stimuli showed that humans could identify stress patterns with amplitude and pitch alone, but not with only duration or vowel quality. Budgerigars required more than one cue to be present and had trouble if vowel quality or amplitude were missing as cues. The results suggest that stress patterns in human speech can be decoded by other species. Further comparative stress-perception research with more species could help to determine what species characteristics predict this ability. In addition, tests with a variety of stimuli could help to determine how much this ability depends on general pattern learning processes versus vocalization-specific cues.