Iconicity and the Emergence of Combinatorial Structure in Language

In language, recombination of a discrete set of meaningless building blocks forms an unlimited set of possible utterances. How such combinatorial structure emerged in the evolution of human language is increasingly being studied. It has been shown that it can emerge when languages culturally evolve and adapt to human cognitive biases. How the emergence of combinatorial structure interacts with the existence of holistic iconic form‐meaning mappings in a language is still unknown. The experiment presented in this paper studies the role of iconicity and human cognitive learning biases in the emergence of combinatorial structure in artificial whistled languages. Participants learned and reproduced whistled words for novel objects with the use of a slide whistle. Their reproductions were used as input for the next participant, to create transmission chains and simulate cultural transmission. Two conditions were studied: one in which the persistence of iconic form‐meaning mappings was possible and one in which this was experimentally made impossible. In both conditions, cultural transmission caused the whistled languages to become more learnable and more structured, but this process was slightly delayed in the first condition. Our findings help to gain insight into when and how words may lose their iconic origins when they become part of an organized linguistic system.     

Innovation,research integrity,and change: A conflict of interest management framework for program developers

Psychology and the social sciences have an important role to play in developing innovative solutions to pressing global mental health and social problems. Programs developed by psychologists and other social scientists have immense potential to alleviate suffering and to promote healthy human development across the lifespan. In order to realise this potential program developers must manage the research and development challenges involved in testing an intervention, evaluating, and then preparing it for wider dissemination and scaling. Particular challenges and conflicts can occur in managing the joint roles of being a program developer and a researcher evaluating an intervention or innovation. This article examines the management of various forms of conflicts of interest that have the potential to produce bias and decrease the confidence of policy makers, funders, practitioners, fellow researchers, and the public in the value of psychological interventions. We argue that best practice guidelines are needed to assist developers negotiate the predictable, sometime unavoidable but challenging conflicts of interest that arise in the research process.     

BootES: An R package for bootstrap confidence intervals on effect sizes

Bootstrap Effect Sizes (bootES; Gerlanc & Kirby, 2012) is a free, open-source software package for R (R Development Core Team, 2012), which is a language and environment for statistical computing. BootES computes both unstandardized and standardized effect sizes (such as Cohen’s d, Hedges’s g, and Pearson’s r) and makes easily available for the first time the computation of their bootstrap confidence intervals (CIs). In this article, we illustrate how to use bootES to find effect sizes for contrasts in between-subjects, within-subjects, and mixed factorial designs and to find bootstrap CIs for correlations and differences between correlations. An appendix gives a brief introduction to R that will allow readers to use bootES without having prior knowledge of R.     

Cognitive Predictors of English Reading Achievement in Chinese English-Immersion Students

This study investigated the effects of English and Chinese phonological awareness (PA) and naming speed (NS) on English reading achievement and the evidence for cross-linguistic transfer in Chinese English-immersion students. English PA was a significant predictor of English reading achievement for immersion students in Grades 2 and 4. There was little evidence of cross-linguistic transfer from Chinese PA and NS to English reading achievement. English immersion students performed equal to non-immersion students on NS and mathematics in both grades, and in Chinese PA in Grade 4. Results are discussed in terms of theories of reading development in second language.