This text explores the relationship between second language teaching practice and what is known about the process of second language acquisition and summarizes the current state of second language acquisition theory.-- Draws general conclusions about the application of theory to methods and materials and describes the characteristics that effective materials should include.-- Concludes that language acquisition occurs best when language is used for the purpose for which it was designed: communication.

http://www.sdkrashen.com/content/books/principles_and_practice.pdf

Principles and Practice in Second Language Acquisition

Behavioral scientists routinely publish broad claims about human psychology and behavior in the world's top journals based on samples drawn entirely from Western, Educated, Industrialized, Rich, and Democratic (WEIRD) societies. Researchers - often implicitly - assume that either there is little variation across human populations, or that these "standard subjects" are as representative of the species as any other population. Are these assumptions justified? Here, our review of the comparative database from across the behavioral sciences suggests both that there is substantial variability in experimental results across populations and that WEIRD subjects are particularly unusual compared with the rest of the species - frequent outliers. The domains reviewed include visual perception, fairness, cooperation, spatial reasoning, categorization and inferential induction, moral reasoning, reasoning styles, self-concepts and related motivations, and the heritability of IQ. The findings suggest that members of WEIRD societies, including young children, are among the least representative populations one could find for generalizing about humans. Many of these findings involve domains that are associated with fundamental aspects of psychology, motivation, and behavior - hence, there are no obvious a priori grounds for claiming that a particular behavioral phenomenon is universal based on sampling from a single subpopulation. Overall, these empirical patterns suggests that we need to be less cavalier in addressing questions of human nature on the basis of data drawn from this particularly thin, and rather unusual, slice of humanity. We close by proposing ways to structurally re-organize the behavioral sciences to best tackle these challenges.

/pdf/the-weirdest-people-in-the-world-480wr4m3kb.pdf

The WEIRDest People in the World

How do people know as much as they do with as little information as they get? The problem takes many forms; learning vocabulary from text is an especially dramatic and convenient case for research. A new general theory of acquired similarity and knowledge representation, latent semantic analysis (LSA), is presented and used to successfully simulate such learning and several other psycholinguistic phenomena. By inducing global knowledge indirectly from local co-occurrence data in a large body of representative text, LSA acquired knowledge about the full vocabulary of English at a comparable rate to schoolchildren. LSA uses no prior linguistic or perceptual similarity knowledge; it is based solely on a general mathematical learning method that achieves powerful inductive effects by extracting the right number of dimensions (e.g., 300) to represent objects and contexts. Relations to other theories, phenomena, and problems are sketched.

/pdf/a-solution-to-plato-s-problem-the-latent-semantic-analysis-4jfk7ozfms.pdf

A Solution to Plato's Problem: The Latent Semantic Analysis Theory of Acquisition, Induction, and Representation of Knowledge.

How we raise young children is one of today's most highly personalized and sharply politicized issues, in part because each of us can claim some level of "expertise." The debate has intensified as discoveries about our development-in the womb and in the first months and years-have reached the popular media. How can we use our burgeoning knowledge to assure the well-being of all young children, for their own sake as well as for the sake of our nation? Drawing from new findings, this book presents important conclusions about nature-versus-nurture, the impact of being born into a working family, the effect of politics on programs for children, the costs and benefits of intervention, and other issues. The committee issues a series of challenges to decision makers regarding the quality of child care, issues of racial and ethnic diversity, the integration of children's cognitive and emotional development, and more. Authoritative yet accessible, From Neurons to Neighborhoods presents the evidence about "brain wiring" and how kids learn to speak, think, and regulate their behavior. It examines the effect of the climate-family, child care, community-within which the child grows.

/pdf/from-neurons-to-neighborhoods-the-science-of-early-childhood-3bfl5g72ow.pdf

From Neurons to Neighborhoods: The Science of Early Childhood Development

Standard alphabetical procedures for organizing lexical information put together words that are spelled alike and scatter words with similar or related meanings haphazardly through the list. Unfortunately, there is no obvious alternative, no other simple way for lexicographers to keep track of what has been done or for readers to find the word they are looking for. But a frequent objection to this solution is that finding things on an alphabetical list can be tedious and time-consuming. Many people who would like to refer to a dictionary decide not to bother with it because finding the information would interrupt their work and break their train of thought.

/pdf/introduction-to-wordnet-an-on-line-lexical-database-1cshcej27g.pdf

Introduction to WordNet: An On-line Lexical Database

A Picture is Worth a Thousand Words—But That’s the Problem

This chapter provides an introduction to the topic of the “mental lexicon,” the representation of language in the mind/brain, at the level of individual morphemes and words. The chapter summarizes the structure of the contributions within the volume, focusing on how the mind/brain represents lexical knowledge, how lexical knowledge is acquired, and how the mental lexicon contributes to language use, in listening, speaking, and conversation. Part I (‘Representing the Mental Lexicon’) introduces modern linguistic and cognitive theories of how the mind/brain represents words and sub-word units at the phonological, morphological, syntactic, and semantic levels. Part II (‘Acquiring the Mental Lexicon’) turns to the process through which children learn the phonological, morphological, syntactic, and semantic properties of words in their native language. Finally, Part III ‘(Accessing the Mental Lexicon’) examines how the mental lexicon contributes to language use during listening, speaking, and conversation, and includes perspectives from bilingualism, sign languages, and disorders of lexical access and production.

Lila R. Gleitman

Papers

A Picture is Worth a Thousand Words—But That’s the Problem

Introduction