Around their first birthdays, infants begin to point, walk, and talk. These abilities are appreciable both by researchers with strictly standardized criteria and caregivers with more relaxed notions of what each of these skills entails. Here, we compare the onsets of these skills and links among them across two data collection methods: observation…

Background: Non-word repetition (NWR) tasks have been found to correlate with language skills and to discriminate between groups of typically developing (TD) children and children with speci?c language impairment (SLI) across languages. Aims: The main aim was to develop an easily-administered NWR screening test that could discriminate between…

Prospective questionnaire data from a longitudinal population sample on children with autism spectrum disorders (ASD), developmental delay, specific language impairment, or typical development (TD), were collected at ages eight, 12 and 24 months, via the Communication and Symbolic Behavior Scale Developmental Profile (CSBS)--Infant Toddler…

Purpose: The purpose of the current study was to examine the concurrent validity and classification accuracy of 3 parent report measures of language development in Spanish-speaking toddlers. Method: Forty-five Spanish-speaking parents and their 2-year-old children participated. Twenty-three children had expressive language delays (ELDs) as…

For the last 20 years, developmental psychologists have measured the variability in lexical development of infants and toddlers using the MacArthur-Bates Communicative Development Inventories (CDIs)--the most widely used parental report forms for assessing language and communication skills in infants and toddlers. We show that CDI reports can…

The emergence of the Down syndrome (DS) behavioural phenotype during early development may be of great importance for early intervention. The main goal of this study was to investigate the good-imitator-poor-talker developmental profile in DS at preschool age. Twenty children with Down syndrome (DS; mean nonverbal mental age NMA 1 y10 m) and 15…

The Spanish-language MacArthur-Bates Communicative Development Inventories (S-CDIs) are well-established parent report tools for assessing the language development of Spanish-speaking children under 3 years. Here, we introduce the short-form versions of the S-CDIs (SFI and SFII), offered as alternatives to the long forms for screening purposes or…

This article addresses the acquisition of meaning of words and phrases that refer to aspects of the world that are not directly perceivable. It examines the patterns of semantic input that are available in the linguistic environment that provide clues to allow a child to construct a lexicon that is both broad and deep. These patterns are…

Purpose: To examine the validity of the MacArthur-Bates Communicative Development Inventories (CDI) for measuring language abilities in children with profound hearing loss who are using cochlear implants. Method: Twenty-four children with cochlear implants and their mothers participated in this study. Children ranged in age from 32 months to 86…

This study examined parental report as a source of information about toddlers' productive vocabulary in 105 low-income families living in either urban or rural communities. Parental report using the MacArthur Communicative Development Inventory-Short Form (CDI) at child age 2;0 was compared to concurrent spontaneous speech measures and…

The present study investigated the validity of the MacArthur-Bates Communicative Development Inventory (CDI) for a group of toddlers 30 months of age. Study 1 examined the concurrent validity of the CDI for a group of 38 late talkers. Significant correlations were found between the CDI and direct measures of language abilities. Study 2 used…

Children with Down syndrome (DS) have cognitive disabilities resulting from trisomy 21. Language-learning difficulties, especially expressive language problems, are an important component of the phenotype of this population. Many individuals with DS are born into bilingual environments. To date, however, there is almost no information available…

Purpose: Directed scanning and group-item scanning both represent options for increased scanning efficiency. This investigation compared accuracy and speed of selection with preschoolers using each scanning method. The study's purpose was to describe performance characteristics of typically developing children and to provide a reliable assessment…

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)

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…