J. Marc Goodrich

Executive function of Spanish-speaking language-minority preschoolers: Structure and relations with early literacy skills and behavioral outcomes

Young childrens executive function (EF) is increasingly recognized as an important construct associated with development in cognitive and socioemotional domains. To date, however, few studies have examined EF in populations of language-minority children. In this study, 241 Spanish-speaking language-minority preschoolers who ranged in age from 38 to 69 months (M=54.23 months, SD=6.17) completed three tasks designed to measure inhibitory control (IC) and four tasks designed to measure working memory (WM). Children completed assessments of their vocabulary skills, early literacy skills, and behavioral self-regulation in both English and Spanish, and their classroom teachers completed three behavior rating measures. Children were classified as more proficient in English or Spanish based on their scores on the vocabulary measures, and all IC and WM measures were administered in the childrens more proficient language. Results of confirmatory factor analyses supported a two-factor model of EF for both groups of children as well as strong measurement and structural invariance across groups. Childrens EF was substantially related to the language, early literacy, and behavioral self-regulation measures as well as teacher ratings of inattention and hyperactivity/impulsivity. For children with more proficient English, EF was associated with skills in both English and Spanish; however, for children with more proficient Spanish, EF was associated primarily with skills in Spanish. These results provide evidence of strong correspondence for EF measured in Spanish-speaking language-minority preschoolers and monolingual preschoolers, and they identify a potential key factor that can enhance understanding of development in this population of children.

Children's Expressive Language Skills and Their Impact on the Relation between First-and Second-Language Phonological Awareness Skills.

The purpose of this study was to evaluate whether the cross-language relations between the phonological awareness (PA) skills of preschool children learning more than one language are dependent upon their first- and second-language oral language skills. Four hundred sixty-six Spanish-speaking language minority children participated in this study. Results indicated that the relation between children’s first- and second-language PA skills varied as a function of their first- and second-language oral language skills. This effect was language specific such that only oral language skills in the same language as the PA outcome moderated the relations between children’s first- and second-language PA skills. This study helps extend findings from prior research on the cross-language transfer of PA.

Does Preschool Self-Regulation Predict Later Behavior Problems in General or Specific Problem Behaviors?

Findings from prior research have consistently indicated significant associations between self-regulation and externalizing behaviors. Significant associations have also been reported between children’s language skills and both externalizing behaviors and self-regulation. Few studies to date, however, have examined these relations longitudinally, simultaneously, or with respect to unique clusters of externalizing problems. The current study examined the influence of preschool self-regulation on general and specific externalizing behavior problems in early elementary school and whether these relations were independent of associations between language, self-regulation, and externalizing behaviors in a sample of 815 children (44% female). Additionally, given a general pattern of sex differences in the presentations of externalizing behavior problems, self-regulation, and language skills, sex differences for these associations were examined. Results indicated unique relations of preschool self-regulation and language with both general externalizing behavior problems and specific problems of inattention. In general, self-regulation was a stronger longitudinal correlate of externalizing behavior for boys than it was for girls, and language was a stronger longitudinal predictor of hyperactive/impulsive behavior for girls than it was for boys.

Lexical characteristics of words and phonological awareness skills of preschool children

The lexical restructuring model (LRM; Metsala & Walley, 1998) can be used to explain the development of phonological awareness (PA). According to LRM, as childrens vocabularies increase, children develop a more refined lexical representation of the sounds comprising those words, and in turn children become more sensitive to the detection of specific phonemes. LRM identifies several lexical characteristics of words that influence lexical restructuring: age of acquisition (AoA), word frequency, neighborhood density, and phonotactic probability. In this study, the effects of these lexical characteristics on childrens performance on PA tasks were evaluated, as well as moderation of these effects by childrens oral language skills and ages, in two independent samples of preschool children who completed measures of PA and oral language. For both samples, AoA and word frequency were negatively related to PA skills, and phonotactic probability was positively related to PA skills. Childrens ages and oral language skills were positive predictors of PA skills, and childrens ages moderated the relations between AoA and PA skills for children in Sample 2. Childrens oral language skills moderated the relations between AoA and PA skills for children in Sample 1. Implications are discussed.

Inhibitory Control of Spanish-Speaking Language-Minority Preschool Children Measurement and Association With Language, Literacy, and Math Skills

Children’s self-regulation, including components of executive function such as inhibitory control, is related concurrently and longitudinally with elementary school children’s reading and math abilities. Although several recent studies have examined links between preschool children’s self-regulation or executive function and their academic skill development, few included large numbers of Spanish-speaking language-minority children. Among the fastest growing segments of the U.S. school-age population, many of these children are at significant risk of academic difficulties. We examined the relations between inhibitory control and academic skills in a sample containing a large number of Spanish-speaking preschoolers. Overall, the children demonstrated substantial academic risk based on preschool-entry vocabulary scores in the below-average range. Children completed assessments of language, literacy, and math skills in English and Spanish, when appropriate, at the start and end of their preschool year, along with a measure of inhibitory control, the Head-Toes-Knees-Shoulders task, which was administered at the start of the preschool year in the child’s dominant conversational language. Scores on this last measure were lower for children for whom it was administered in Spanish. For both English and Spanish outcomes, those scores were significantly and uniquely associated with higher scores on measures of phonological awareness and math skills but not vocabulary or print knowledge skills.

Development and Transfer of Vocabulary Knowledge in Spanish-Speaking Language Minority Preschool Children.

In this study we evaluated the predictive validity of conceptual scoring. Two independent samples of Spanish-speaking language minority preschoolers (Sample 1: N = 96, mean age = 54·51 months, 54·3% male; Sample 2: N = 116, mean age = 60·70 months, 56·0% male) completed measures of receptive, expressive, and definitional vocabulary in their first (L1) and second (L2) languages at two time points approximately 9-12 months apart. We examined whether unique L1 and L2 vocabulary at time 1 predicted later L2 and L1 vocabulary, respectively. Results indicated that unique L1 vocabulary did not predict later L2 vocabulary after controlling for initial L2 vocabulary. An identical pattern of results emerged for L1 vocabulary outcomes. We also examined whether children acquired translational equivalents for words known in one language but not the other. Results indicated that children acquired translational equivalents, providing partial support for the transfer of vocabulary knowledge across languages.

Language-Independent and Language-Specific Aspects of Early Literacy: An Evaluation of the Common Underlying Proficiency Model

According to the common underlying proficiency model (Cummins, 1981), as children acquire academic knowledge and skills in their first language, they also acquire language-independent information about those skills that can be applied when learning a second language. The purpose of this study was to evaluate the relevance of the common underlying proficiency model for the early literacy skills of Spanish-speaking language-minority children using confirmatory factor analysis. A total of 858 Spanish-speaking language-minority preschoolers (mean age = 60.83 months; 50.2% female) participated in this study. Results indicated that bifactor models that consisted of language-independent as well as language-specific early literacy factors provided the best fits to the data for children’s phonological awareness and print knowledge skills. Correlated factors models that included skills specific to only Spanish and English provided the best fits to the data for children’s oral language skills. Children’s language-independent early literacy skills were significantly related across constructs and to language-specific aspects of early literacy. Language-specific aspects of early literacy skills were significantly related within but not across languages. These findings suggest that language-minority preschoolers have a common underlying proficiency for code-related skills but not language-related skills that may allow them to transfer knowledge across languages.

Impacts of a literacy-focused preschool curriculum on the early literacy skills of language-minority children

Spanish-speaking language-minority (LM) children are at an elevated risk of struggling academically and display signs of that risk during early childhood. Therefore, high-quality research is needed to identify instructional techniques that promote the school readiness of Spanish-speaking LM children. The primary purpose of this study was to evaluate the effectiveness of an intervention that utilized an experimental curriculum and two professional development models for the development of English and Spanish early literacy skills among LM children. We also evaluated whether LM childrens proficiency in one language moderated the effect of the intervention on early literacy skills in the other language, as well as whether the intervention was differentially effective for LM and monolingual English-speaking children. Five hundred twenty-six Spanish-speaking LM children and 447 monolingual English-speaking children enrolled in 26 preschool centers in Los Angeles, CA participated in this study. Results indicated that the intervention was effective for improving LM childrens code-related but not language-related English early literacy skills. There were no effects of the intervention on childrens Spanish early literacy skills. Proficiency in Spanish did not moderate the effect of the intervention for any English early literacy outcomes; however, proficiency in English significantly moderated the effect of the intervention for Spanish oral language skills, such that the effect of the intervention was stronger for children with higher proficiency in English than it was for children with lower proficiency in English. In general, there were not differential effects of the intervention for LM and monolingual children. Taken together, these findings indicate that high-quality, evidence-based instruction can improve the early literacy skills of LM children and that the same instructional techniques are effective for enhancing the early literacy skills of LM and monolingual children.

Language-minority children’s sensitivity to the semantic relations between words

The purpose of this study was to examine automatic language processing among Spanish-speaking language-minority children. A sample of 73 children (mean age = 90.4 months) completed two measures of semantic priming: an auditory lexical decision task and a looking-while-listening task. It was hypothesized that within- and cross-language semantic priming effects would occur but that translation priming effects would not occur. Results from vocabulary assessments indicated that language-minority children in this study were more proficient in English than they were in Spanish. Limited evidence for semantic priming effects within English and from English to Spanish emerged. In addition, substantial evidence for translation priming from Spanish to English and from English to Spanish emerged. Given the lack of within-Spanish semantic priming effects and the presence of translation priming effects from Spanish to English, the results of this study indicated that Spanish-speaking language-minority children rely on translation from their less proficient language to their more proficient language to access meaning. There was partial evidence that language-minority childrens two languages are active simultaneously, indicating that early in life children develop semantic knowledge that is associated with words known in both languages.

Exploring Growth Trajectories of Informal and Formal Mathematics Skills Among Prekindergarten Children Struggling With Mathematics

Growth in two subscales, Informal and Formal Mathematics Skills, of the Test of Early Mathematics Abilitity–3 (TEMA-3) was explored in a sample of 281 children. Children were identified as either typically developing (TYP; n = 205) or having mathematics difficulties (MD; n = 76) based on their total TEMA-3 score at the end of prekindergarten. Their average level of informal and formal mathematics skills, growth rate over time, and rate of acceleration of growth were estimated using conventional growth modeling while controlling for the effects of gender. Results indicated that children with MD had significantly lower informal and formal mathematics knowledge than did TYP children at the end of kindergarten. However, for informal mathematics skills, children with MD grew at a significantly faster rate than did TYP children, and the rate of acceleration was also significantly faster for children with MD. In contrast, both the rate of growth and acceleration of growth in formal mathematics skills were significantly faster for TYP children than they were for children with MD. Implications for early MD identification and interventions are discussed.