Recent findings suggest some properties of input in dual-language environments that influence its value for bilingual development, but the extant data base is small and sometimes inconclusive. The present study sought additional evidence regarding three quality indicators: the percent of input provided by native speakers, the number of different speakers providing input, and the frequency of language mixing. Participants were 90 thirty-month-olds exposed to Spanish and English. Using the Language Diary method to assess input and using multiple measures of children's bilingual skills, results replicated previous findings that the percent of input provided by native speakers is a positive quality indicator and found suggestive evidence that the number of speakers is also a positive quality indicator. There was little evidence that the frequency of language mixing is a negative indicator. These findings advance understanding of sources of variability in bilingual outcomes and have implications for programs to support bilingual development.

Thirty-four 4 to 6-year-old Malay–English bilinguals (both balanced and dominant) characterized as low SES on income and parental education were tested on the child-Attentional Network Task (ANT) (Rueda, Rothbart, McCandliss, Saccomanno & Posner, 2004) measuring executive attention. Although SES measures fell below the Singapore median, Malay children's performance on the child-ANT remained high when compared to other age-matched monolingual and bilingual children previously tested with the child-ANT (Yang, Yang & Lust, 2011), and Chinese–English Singaporean bilinguals (Yang, Yang & Kang, 2014). None of the three SES measures – father's and mother's education, and income – significantly correlated with child-ANT components. Regression analyses confirmed that none of the SES measures significantly predicted performance on the child-ANT. Both balanced and dominant bilinguals displayed high executive control. We consider the possibility that cultural variations, (e.g., simultaneous and pervasiveness of bilingualism in Singapore, or pervasive code-switching), may ameliorate potential negative effects of SES on executive control development.

The performance of bilingual children and adults in Wales on Welsh and English vocabulary and grammar and on cognitive measures is re-analysed in relation to SES indicators of parental education and parental professions. Results are reported for 732 participants ranging across seven age groups from age 3 to over 60 and from four home language types, monolingual English, and bilinguals with only English at home, Welsh and English at home, or only Welsh at home. Results reveal extensive evidence of SES influence on performance, and of a complex relation of exposure in the home and SES level on performance, modulated by the age of the participant and whether one is considering the majority or minority language.

This study explores the hypothesis that language of testing and mood states can influence creativity in bilinguals. Arabic–English bilingual speakers were induced into positive or negative mood states using film clips and recall-of-events procedures. Then, participants’ creativity was assessed with the Abbreviated Torrance Test for Adults. Participants were tested in either English or Arabic. A Picture Naming Test revealed English as participants’ stronger language and Arabic as their weaker language. Testing in English was found to enhance verbal fluency and originality, as compared to testing in Arabic. Most importantly, an interactive effect of induction (positive, negative) and language of testing (English, Arabic) on creativity emerged. The results revealed two conditions beneficial for participants’ nonverbal originality: a positive mood state when tested in English and a negative mood state when tested in Arabic. These results are discussed in light of the interactive effect of mood induction and linguistic context (stronger vs. weaker) on an individual's creativity.