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Children with language disorders have particular difficulty with verbs, but when this difficulty emerges is unknown. We examined syntactic (transitive, intransitive, ditransitive) and semantic (manner, result) features of two-year-olds' verb vocabularies, contrasting late talkers and typically developing children to look for early differences in verb vocabulary. We conducted a retrospective analysis of parent-reported expressive vocabulary from the Language Development Survey (N = 564, N(LT) = 62) (Rescorla, 1989). Verbs were coded for the presence or absence of each syntactic and semantic feature. Binomial mixed-effects regressions revealed the effect of feature on children's knowledge and whether feature interacted with group classification. Our results revealed mostly similarities between late talkers and typically developing children. All children's vocabularies showed a bias against verbs that occur in ditransitive frames. One feature showed a difference between groups: late talkers showed a bias against manner verbs that typically developing children did not.

Purpose: The objective of this study was to compare vocabulary size and composition in 2-year-olds learning Polish or English as measured by the Language Development Survey (LDS; Rescorla, 1989). Method: Participants were 199 Polish toddlers (M = 24.14 months, SD = 0.35) and 422 U.S. toddlers (M = 24.69 months, SD = 0.78). Results: Test-retest reliability was 0.92, internal consistency was 0.99, and concurrent validity was 0.55. Girls had higher vocabulary scores than boys. Mean LDS score was significantly lower in Polish than in English, and fewer Polish children had LDS scores >200 words. Also, more words were reported for <25% of the children, and fewer words were reported for =75% of the children, in Polish than in English. The cross-linguistic correlation for word frequencies was 0.44. Noun dominance was comparable in the two languages, and 55 cross-linguistic word matches were found among the top 100 words. Although more Polish than U.S. children had <50 words (18.1% vs. 8.3%), children with <50 words and those with =50 words were generally acquiring the same words. Conclusions: Vocabulary acquisition appeared to be slower in Polish than in English, probably because of the complexity of the language. However, the languages were very similar with respect to vocabulary composition findings.

Purpose: Our objective was to replicate previous cross­linguistic findings by comparing Portuguese and U.S. children with respect to (a) effects of language, gender, and age on vocabulary size; (b) lexical composition; and (c) late talking. Method: We used the Language Development Survey (LDS; Rescorla, 1989) with children (18-35 months) learning European Portuguese (n = 181) and English (n = 206). Results: In both languages, girls had higher vocabulary scores than boys and vocabulary scores increased with age. Portuguese LDS scores were significantly lower than English scores, but the effect size was small. Cross­linguistic concordance of percentage use scores yielded a Q correlation of 0.50, with 64 of the "top 100" words being exact matches. Cross­linguistic concordance was highest for the youngest age group. In both languages, vocabulary composition in late talkers (children = 24 months with < 50 words) was highly correlated with composition in vocabulary size­matched younger children. Conclusions: Results replicated previous Greek, Korean, and Italian LDS studies. The early lexicons of typical talkers and late talkers contained many of the same words, indicating considerable universality and suggesting good targets for clinical intervention.

The present study examined the relation between language and social ability in a sample of 268 preschoolers aged 18-35 months. Expressive language was assessed with the Italian adaptation of the Language Development Survey (LDS), and Social Competence was assessed with the Questionnaire on Peer Interactions in the Kindergarten (QPI). Results showed that language measures (LDS Vocabulary, LDS MLU and the opportunity scores of the LDS category of People Words) predicted social competence (Total QPI score and the standardised scores of the "Popularity", "Prosociality", "Aggressiveness", "Adult Dependence", and "Isolation" factors), above and beyond the proportion of variance explained by age. In addition, children with delayed language development (who were older than 24 months and produced fewer than 50 words) exhibited lower social abilities, compared to age-matched children. These findings support the conclusion that language skills play a critical role for social adjustment.

Purpose: This study reports age 5 morphology and syntax skills in late talkers identified at age 2 (n = 34) and typically developing comparison children (n = 20). Results: The late talkers manifested significant morphological delays at ages 3 and 4 relative to comparison peers. Based on the 14 morphemes analyzed at age 5, the only significant group difference was on the third person regular "-s" inflection. This was also the only significant difference when we compared late talkers with continuing delay, late bloomers (who scored within 1 standard deviation of the comparison group in mean length of utterance), and typically developing peers. The late talker and comparison children differed greatly in mean total scores on the Index of Productive Syntax (Scarborough, 1990), a measure of syntactic complexity. The group with continuing delay scored significantly lower on the IPSyn than the late bloomer and typically developing groups, which did not differ from each other. Conclusions: Findings are consistent with the higher order language group differences found through adolescence in these late talkers relative to comparison peers with similar socioeconomic status and similar nonverbal abilities, supporting the notion that late talkers have an ongoing weakness in language endowment that manifests differently over the course of development.

Purpose: The Language Development Survey (LDS; Rescorla, 1989) was used to compare Italian and English lexical development. The authors addressed the issue of universal versus language-specific aspects of lexical development by testing language, age, and gender effects on vocabulary scores and by comparing vocabulary composition across languages. They addressed the issue of delay versus deviance by comparing vocabulary composition in late talkers and younger vocabulary-size-matched children. Method: Participants were 398 Italian and 206 U.S. children ages 18-35 months. Results: Vocabulary size did not differ significantly by language, and age and gender effects on vocabulary size were not moderated by language. The Italian-English Q correlation for percentage word use scores was 0.55, lower than the within-language concordance of 0.90 and above. Cross-linguistic concordance declined as age and vocabulary size increased. Many cross-linguistic word matches (63 words) were found among the top 100 words. Italian late talkers were similar to younger vocabulary-size-matched Italian children in vocabulary composition, consistent with findings for English, Greek, and Korean. Conclusions: In both languages, the early lexicons of late talkers and typical talkers contained many of the same words, indicating considerable universality in young children's lexical development. These common words are therefore good targets for clinical intervention.

Purpose: In this study, the authors aimed to compare vocabulary size, lexical composition, and late talking in large samples of Korean and U.S. children ages 18-35 months. Method: Data for 2,191 Korean children (211 children recruited "offline" through preschools, and 1,980 recruited "online" via the Internet) and 274 U.S. children were obtained using the Language Development Survey (LDS). Results: Mean vocabulary size was slightly larger in the offline than the online group, but the groups were acquiring almost identical words. Mean vocabulary size did not differ by country; girls and older children had larger vocabularies in both countries. The Korean-U.S. Q correlations for percentage use of LDS words (0.53 and 0.56) indicated considerable concordance across countries in lexical composition. Noun dominance was as large in Korean lexicons as in U.S. lexicons. About half of the most commonly reported words for the Korean and U.S. children were identical. Lexicons of late talkers resembled those of typically developing younger children in the same sample. Conclusions: Despite linguistic and discourse differences between Korean and English, LDS findings indicated considerable cross-linguistic similarity with respect to vocabulary size, lexical composition, and late talking. (Contains 1 figure and 2 tables.)

For sixty-seven children with ASD (age 1;6 to 5;11), mean Total Vocabulary score on the Language Development Survey (LDS) was 65.3 words; twenty-two children had no reported words; and twenty-one children had 1-49 words. When matched for vocabulary size, children with ASD and children in the LDS normative sample did not differ in semantic category or word-class scores. "Q" correlations were large when percentage use scores for the ASD sample were compared with those for samples of typically developing children as well as children with vocabularies less than 50 words. The 57 words with the highest percentage use scores for the ASD children were primarily nouns, represented a variety of semantic categories, and overlapped substantially with the words having highest percentage use scores in samples of typically developing children as well as children with lexicons of less than 50 words. Results indicated that the children with ASD were acquiring essentially the same words as typically developing children, suggesting delayed but not deviant lexical composition.

This study investigated vocabulary size and vocabulary composition in Greek children aged 1 ; 6 to 2 ; 11 using a Greek adaptation of Rescorla's Language Development Survey (LDS; Rescorla, 1989). Participants were 273 toddlers coming from monolingual Greek-speaking families. Greek LDS data were compared with US LDS data obtained from the instrument's normative sample (Achenbach & Rescorla, 2000). Vocabulary size increased markedly with age, but Greek toddlers appeared to get off to a slower start in early word learning than US children. The correlation between percentage word use scores in Greek and US samples was moderate in size, indicating considerable overlap but some differences. Common nouns were the largest category among the fifty most frequent words in both samples. Numbers of adjectives and verbs were comparable across languages, but people and closed-class words were more numerous in the Greek sample. Finally, Greek late talkers showed similar patterns of vocabulary composition to those observed in typically developing Greek children.

Purpose: This study examined whether late talkers identified at 24-31 months continued to have weaker language and reading skills at 17 years of age than typically developing peers. Method: Language and reading outcomes at 17 years of age were examined in 26 children identified as late talkers with normal nonverbal ability and normal receptive language at intake and in 23 typically developing children matched at intake on age, socioeconomic status (SES), and nonverbal ability. Results: Although late talkers performed in the average range on all language and reading tasks at 17 years of age, they obtained significantly lower Vocabulary/Grammar and Verbal Memory factor scores than SES-matched peers. The age 17 Vocabulary/Grammar factor had large correlations with the age 17 Verbal Memory and Reading/Writing factors. The age 17 Vocabulary/Grammar and Reading/Writing factors were strongly predicted by comparable factors at 13 years of age. Age 2 Language Development Survey (L. Rescorla, 1989) vocabulary score explained 17% of the variance in the age 17 Vocabulary/Grammar and Verbal Memory factors. Conclusions: Results suggest that slow language development at 24-31 months is associated with a weakness in language-related skills into adolescence relative to skills manifested by typically developing peers--findings that are consistent with a dimensional perspective on language delay.

The use of four types of psychological state words (physiological, emotional, desire, and cognitive) during mother-child play sessions at ages 3, 4, and 5 years was examined in 30 children diagnosed with delayed expressive language at 24-31 months and 15 age-matched comparison children with typical development. The children's mean length of utterance, total words uttered, lexical diversity, and use of propositional complements were assessed. The late talkers used significantly more physiological state words at ages 3 and 4, but the two groups did not differ in their use of physiological state terms at age 5. The late talkers used significantly fewer cognitive words than the comparison children at each age. The mothers of the late talkers made significantly fewer references to cognitive states than the mothers of the comparison children at each age. The delay in the emergence of cognitive state words in the preschool years may affect other aspects of late talkers' cognitive and social development.

Purpose: The association between language delay and behavior problems in toddlers was examined in 2 studies, 1 conducted in a developmental clinic in New Jersey (Study 1; N = 83) and the other conducted in a developmental clinic in New York (Study 2; N = 103). Method: In both clinics, parents of 18- to 35-month-olds completed the Language Development Survey (LDS) and the Child Behavior Checklist/1.5-5 (CBCL). In Study 2, the Preschool Language Scale-Fourth Edition (PLS-4) was also administered. Neurodevelopmental delay (ND) and pervasive developmental disorder (PDD) symptoms were also assessed in both studies but were done so using different measures. Results: In Study 1, LDS Vocabulary score and CBCL Total Problems, Internalizing, and Withdrawn scores were significantly correlated. However, when children with ND and/or suspected PDD were excluded, only the correlation between LDS Vocabulary and Withdrawn remained significant. In Study 2, only the correlation between LDS Vocabulary and Withdrawn approached significance. Children delayed in language on the PLS-4 had higher CBCL scores than typically developing toddlers only on the CBCL Withdrawn syndrome. Conclusion: Significant associations between language delays and behavior problems were not found in 2 samples of 18- to 35-month-olds when children with ND and PDD were excluded, except that toddlers with language delays appeared to show elevated social withdrawal relative to typically developing toddlers.

After providing a brief review of three other approaches to assessment of preschool children (DSM-IV diagnoses, "Zero to Three" diagnoses, and temperament scales), this paper focuses on the Achenbach System of Empirically Based Assessment (ASEBA). The empirically based assessment paradigm provides user-friendly, cost-effective, reliable, and valid procedures for assessing children's behavioral/emotional problems from the perspectives of multiple informants. The ASEBA preschool forms, the Child Behavior Checklist for ages 1.5-5 (CBCL/1.5-5) and the Caregiver-Teacher Report Form (C-TRF), are usable by many different kinds of professionals in diverse settings. The CBCL/1.5-5 also includes the Language Development Survey (LDS), which provides a quick screen for delays in vocabulary and word combinations. The problem items of the CBCL/1.5-5 and the C-TRF are scored on both empirically based syndromes and DSM-oriented scales, which are normed on the same general population sample. Variations in children's functioning across contexts and interaction partners make it essential to obtain and integrate data from multiple sources. Therefore, ASEBA software provides side-by-side comparisons of item and scale scores from up to eight assessment forms per child. Clinical and research applications of ASEBA preschool forms are summarized in the paper, and strengths and limitations are discussed. (Contains 4 figures.)

This study examined the concurrent validity of the Language Development Survey (LDS), a 310-word parent report screening tool for language delay in toddlers, by testing its associations with the MacArthur-Bates Communicative Development Inventories: Words and Sentences (CDI:WS), a 680-word parent report instrument. Participants were 239 toddlers 23-25 months of age. The correlation between total vocabulary score on the 2 instruments was 0.95, and correlations across comparable semantic categories ranged from 0.84 to 0.94. The correlation between the LDS and the CDI:WS for mean length of phrases calculated on 3 examples of the child's longest and best phrases was 0.90. Both instruments demonstrated that parents reported higher vocabulary and mean phrase length scores for girls. The study indicates that information obtained from the LDS about rank ordering of toddlers in terms of their reported vocabulary and mean length of phrases is equivalent to that obtained from the longer CDI:WS.

Language and reading outcomes at 13 years of age were examined in 28 children identified at 24 to 31 months as late talkers, all of whom came from middle--to upper-class socioeconomic status (SES) families and had normal nonverbal ability and age-adequate receptive language at intake. Late talkers were compared with a group of 25 typically developing children matched at intake on age, SES, and nonverbal ability. As a group, late talkers performed in the average range on all standardized language and reading tasks at age 13. However, they scored significantly lower than SES-matched peers on aggregate measures of vocabulary, grammar, and verbal memory, as well as on reading comprehension. They were similar to comparison peers in reading mechanics and writing aggregates. Intercorrelations between outcome measures were moderately high, suggesting considerable shared variance. Regression analyses indicated that age 2 Language Development Survey vocabulary score was a significant predictor of age 13 vocabulary, grammar, verbal memory, and reading comprehension. Findings suggest that slow language development at age 2-2 1/2 is associated with a weakness in language-related skills into adolescence relative to typically developing peers.

Language and reading outcomes at 6 to 9 years of age were examined in 34 children who were late talkers as toddlers. Late talkers performed in the average range on most language and reading tasks by age 5 and 6 but were somewhat less skilled than comparison children at ages 8 and 9. (Contains references.) (Author/DB)

Data from 278 children (ages 18-35 months) were used to norm the Language Development Survey (LDS) and the Child Behavioral Checklist. Vocabulary scores increased markedly with age, were higher in girls, and were modestly correlated with socioeconomic level. Correlations between LDS scores and checklist problem scores were low. (Contains references.) (Author/CR)

Two studies are reported demonstrating the reliability, validity, and clinical utility of the Language Development Survey (LDS) as a screening tool for the identification of expressive language delay in toddlers. The LDS test-retest reliability was .97. The LDS also correlated highly with other measures and the LDS identified at-risk group scored significantly lower than others on most follow-up measures. (Contains references.) (Author/DB)

Topic choice, topic synchrony, and utterance function during mother-child play sessions at age 3 were examined in 32 late talkers and 21 comparison children, matched at intake on age, socioeconomic status, and nonverbal ability. Late talkers and comparison children did not differ in number of utterances, topic initiation, topic synchrony, use of commands, reaction to commands, or conversational fillers. (Author/VWL)

Two studies examined word frequencies in toddlers' lexicons using the Language Development Survey (LDS). In Study 1, a high degree of consistency in LDS word frequencies was found in the lexicons of 758 24-month-olds. In Study 2, LDS word frequencies in 40 late talkers found both lexicon size and age of subject influenced the degree of consistency when compared to a community sample. (Contains references.) (Author/DB)

Longitudinally compared the production of syllable shapes in 10-minute spontaneous speech samples of 20 children with expressive specific language impairment (SLI-E) and 15 typically developing (TD) peers from 24 to 36 months of age. Results are discussed. (Author/VWL)

Expressive language outcomes measured by MLU and the Index of Productive Syntax (IPSyn) at ages 3 and 4 were investigated in 34 late talkers with normal receptive language and in 16 typically developing comparison children matched on age, socioeconomic status, and nonverbal ability. Late talkers made greater gains than comparison children between 3 and 4 in both MLU and IPSyn raw score. (Author/VWL)

Language and reading outcomes at age 13 were examined in 22 children who were late talkers as toddlers. Compared to 14 controls, children who were late talkers had significantly poorer vocabulary, grammar, reading/spelling, and verbal memory skills, although they performed in the average range on most language and academic tasks. (Contains references.) (Author/CR)

Vocabulary growth from age 2 to 3 years was studied in 28 late talkers, using expressive vocabulary inventories reported bimonthly on the Language Development Survey (LDS). (Author/VWL)

Investigates communicative intent in 31 toddlers who were slow to talk and 32 normally developing toddlers matched on SES, age, and nonverbal cognitive ability. Communicative intent was studied during free play, both with the mother and with an unfamiliar examiner. Late talkers relied more on nonword vocalization, gestures, and gesture/oral combinations than their normally developing peers. (Author/JL)

Age 3 follow-up data are presented for sample of 34 toddlers diagnosed between ages of 24 and 31 months with expressive specific language impairment. Late talkers made more rapid progress in lexical development and in descriptive, explanatory, and definitive use of language than in syntactic and morphological language. Toddlers who'd been more severely delayed in expressive language at intake had worst outcomes at age 3. (Author/PB)

Comparison of spontaneous language samples of 30 toddlers diagnosed with specific expressive language impairment (SLI) and language samples of typically developing toddlers found the SLI toddlers vocalized significantly less often, had proportionately smaller consonantal and vowel inventories, and used a more restricted and less mature array of syllable shapes. (Author/DB)

Two parent report inventories geared at assessing language skills in toddlers are examined, in terms of reliability, validity, and application. The MacArthur Communicative Development Inventory: Toddlers and the Language Development Survey are compared and their combined use in handicap identification is discussed. (PB)

Describes a follow-up study of 25 boys who had been diagnosed with Specific Expressive Language Delay (SELD) at 24 to 30 months of age. At three to four years, half of the boys continued to exhibit poor expressive language skills, suggesting that young children diagnosed with SELD are at considerable risk for continuing language problems. (33 references) (JL)

Aim To characterise the relationship between preschool lexical delay and language comprehension and nonverbal intelligence at school age. Methods The mothers of 2724 children completed the MacArthur Communicative Development Inventory when their child reached 1.5 years and the Language Development Survey and the Parent Report of Children's Ability at 2.5 years. When the children were 6 years old, we assessed vocabulary comprehension and nonverbal intelligence using Dutch batteries for language and nonverbal intelligence. Results Demographic factors explained 9.9% of the variance in vocabulary comprehension and 8.7% of the variance in nonverbal intelligence at 6 years. Male gender, low maternal education and non- Western ethnic background predicted vocabulary comprehension delay at 6 years. Lexical development at 1.5 and 2.5 years explained only 3.8% of the variance in language comprehension at the age of six. Late onset expressive vocabulary delay increased the risk of language comprehension and nonverbal intelligence delay at 6 years ( OR=2.31, 95% CI: 1.62-3.29 and OR=1.74, 95% CI: 1.17-2.58, respectively). Conclusion Sociodemographic factors are important predictors of delays in language and nonverbal abilities as children enter school. In contrast, early expressive lexical delays, in particular before the age of two, have limited predictive power for language delays at the age of six. [ABSTRACT FROM AUTHOR]

Purpose: The authors tested associations between (a) parent-reported temporary vs. persistent vocabulary delay and (b) parent-reported behavioral/emotional problems in a sample of 5,497 young Dutch children participating in a prospective population-based study. Method: Mothers completed the MacArthur Communicative Development Inventory-Netherlands (Zink & Lejaegere, 2003) at age 18 months and the Language Development Survey (Rescorla, 1989) at age 30 months, with expressive vocabulary delay defined as scores in the lowest 15th age- and gender-specific percentiles. The Child Behavior Checklist (Achenbach & Rescorla, 2000) was completed by mothers when their children were age 18 months and by both parents when their children were age 36 months, from which Internalizing Problems and Externalizing Problems scores were analyzed. Results: All analyses were adjusted for covariates. Expressive vocabulary delay at age 18 months was weakly related to Internalizing Problems scores at age 18 months as well as mother-reported Externalizing and Internalizing Problems scores at age 36 months (the latter for boys only). Expressive vocabulary delay at age 30 months was weakly associated with mother-reported Externalizing and Internalizing Problems scores (the latter for boys only) and father-reported Internalizing Problems scores. Persistent expressive vocabulary delay predicted the highest risk of mother-reported internalizing and externalizing problems at age 36 months. Conclusion: This population-based study showed modest associations between vocabulary delay and behavioral/emotional problems detectable from 18 months onward, [ABSTRACT FROM AUTHOR]

Compares mother-child dyads of boy toddlers who were late talkers to dyads of normally developing boys in terms of social cues and dyadic synchrony. Microanalytic coding of each partner's linguistic and nonverbal behavior; Lack of differences in mothers; Differences in children.

The present study examined gender differences in the relation between language and social competence in 268 children aged 18 to 35 months. Correlational and regression analyses demonstrated that the association between expressive language and social ability was significantly stronger in boys than in girls. [ABSTRACT FROM AUTHOR]