PSYCHOLINGUISTIC, CURRICULUM AND SEMANTIC

PSICHOLINGUISTIC
Psycholinguistics or psychology of language is the study of the psychological and neurobiological factors that enable humans to acquire, use, comprehend and produce language. Initial forays into psycholinguistics were largely philosophical ventures, due mainly to a lack of cohesive data on how the human brain functioned. Modern research makes use of biology, neuroscience, cognitive science, linguistics, and information theory to study how the brain processes language. There are a number of subdisciplines with non-invasive techniques for studying the neurological workings of the brain; for example, neurolinguistics has become a field in its own right.

Psycholinguistics covers the cognitive processes that make it possible to generate a grammatical and meaningful sentence out of vocabulary and grammatical structures, as well as the processes that make it possible to understand utterances, words, text, etc. Developmental psycholinguistics studies children's ability to learn language.
Theories about how language works in the human mind attempt to account for, among other things, how we associate meaning with the sounds (or signs) of language and how we use syntax—that is, how we manage to put words in the proper order to produce and understand the strings of words we call "sentences". The first of these items—associating sound with meaning—is the least controversial and is generally held to be an area in which animal and human communication have at least some things in common (See animal communication). Syntax, on the other hand, is controversial, and is the focus of the discussion that follows.

There are essentially two schools of thought as to how we manage to create syntactic sentences: (1) syntax is an evolutionary product of increased human intelligence over time and social factors that encouraged the development of spoken language; (2) language exists because humans possess an innate ability, an access to what has been called a "universal grammar". This view holds that the human ability for syntax is "hard-wired" in the brain. This view claims, for example, that complex syntactic features such as recursion are beyond even the potential abilities of the most intelligent and social non-humans. (Recursion includes the use of relative pronouns to refer back to earlier parts of a sentence ("The girl whose car is blocking my view of the tree that I planted last year is my friend.")) The innate view claims that the ability to use syntax like that would not exist without an innate concept that contains the underpinnings for the grammatical rules that produce recursion. Children acquiring a language, thus, have a vast search space to explore among possible human grammars, settling, logically, on the language(s) spoken or signed in their own community of speakers. Such syntax is, according to the second point of view, what defines human language and makes it different from even the most sophisticated forms of animal communication.

The first view was prevalent until about 1960 and is well represented by the mentalistic theories of Jean Piaget and the empiricist Rudolf Carnap. As well, the school of psychology known as behaviorism (see Verbal Behavior (1957) by B.F. Skinner) puts forth the point of view that language is behavior shaped by conditioned response. The second point of view (the "innate" one) can fairly be said to have begun with Noam Chomsky's highly critical review of Skinner's book in 1959 in the pages of the journal Language.[1] That review started what has been termed "the cognitive revolution" in psychology.

The field of psycholinguistics since then has been defined by reactions to Chomsky, pro and con. The pro view still holds that the human ability to use syntax is qualitatively different from any sort of animal communication. This ability may have resulted from a favorable mutation or from an adaptation of skills evolved for other purposes. In support of the latter view is the theory that language serves group needs; better linguistic expression may have produced more cohesion, cooperation, and potential for survival. The con view still holds that language—including syntax—is an outgrowth of hundreds of thousands of years of increasing intelligence and tens of thousands of years of human interaction. From that view, syntax in language gradually increased group cohesion and potential for survival. Language—syntax and all—is a cultural artifact. This view challenges the "innate" view as scientifically unfalsifiable; that is to say, it can't be tested; the fact that a particular, conceivable syntactic structure does not exist in any of the world's finite repertoire of languages is an interesting observation, but it is not proof of a genetic constraint on possible forms, nor does it prove that such forms couldn't exist or couldn't be learned.

Contemporary theorists, besides Chomsky, working in the field of theories of psycholinguistics include George Lakoff and Steven Pinker.
[edit] Methodologies
[edit] Behavioral

Much methodology in psycholinguistics takes the form of behavioral experiments incorporating a lexical decision task. In these types of studies, subjects are presented with some form of linguistic input and asked to perform a task (e.g. make a judgment, reproduce the stimulus, read a visually presented word aloud). Reaction times (usually on the order of milliseconds) and proportion of correct responses are the most often employed measures of performance. Such experiments often take advantage of priming effects, whereby a "priming" word or phrase appearing in the experiment can speed up the lexical decision for a related "target" word later.[2]

Such tasks might include, for example, asking the subject to convert nouns into verbs; e.g., "book" suggests "to write," "water" suggests "to drink," and so on. Another experiment might present an active sentence such as "Bob threw the ball to Bill" and a passive equivalent, "The ball was thrown to Bill by Bob" and then ask the question, "Who threw the ball?" We might then conclude (as is the case) that active sentences are processed more easily (faster) than passive sentences. More interestingly, we might also find out (as is the case) that some people are unable to understand passive sentences; we might then make some tentative steps towards understanding certain types of language deficits (generally grouped under the broad term, aphasia).[3]

More recently, eye tracking has been used to study online language processing. Beginning with Rayner (1978)[4] the importance and informativity of eye-movements during reading was established. Tanenhaus et al.,[5] have performed a number of visual-world eye-tracking studies to study the cognitive processes related to spoken language. Since eye movements are closely linked to the current focus of attention, language processing can be studied by monitoring eye movements while a subject is presented with linguistic input.
[edit] Neuroimaging

Until the recent advent of non-invasive medical techniques, brain surgery was the preferred way for language researchers to discover how language works in the brain. For example, severing the corpus callosum (the bundle of nerves that connects the two hemispheres of the brain) was at one time a treatment for some forms of epilepsy. Researchers could then study the ways in which the comprehension and production of language were affected by such drastic surgery. Where an illness made brain surgery necessary, language researchers had an opportunity to pursue their research.

Newer, non-invasive techniques now include brain imaging by positron emission tomography (PET); functional magnetic resonance imaging (fMRI); event-related potentials (ERPs) in electroencephalography (EEG) and magnetoencephalography (MEG); and transcranial magnetic stimulation (TMS). Brain imaging techniques vary in their spatial and temporal resolutions (fMRI has a resolution of a few thousand neurons per pixel, and ERP has millisecond accuracy). Each type of methodology presents a set of advantages and disadvantages for studying a particular problem in psycholinguistics.
[edit] Computational

Computational modeling—e.g. the DRC model of reading and word recognition proposed by Coltheart and colleagues[6]—is another methodology. It refers to the practice of setting up cognitive models in the form of executable computer programs. Such programs are useful because they require theorists to be explicit in their hypotheses and because they can be used to generate accurate predictions for theoretical models that are so complex that they render discursive analysis unreliable. Another example of computational modeling is McClelland and Elman's TRACE model of speech perception.[7]
[edit] Issues and areas of research

Psycholinguistics is concerned with the nature of the computations and processes that the brain undergoes to comprehend and produce language. For example, the cohort model seeks to describe how words are retrieved from the mental lexicon when an individual hears or sees linguistic input.[2][8]

Recent research using new non-invasive imaging techniques seeks to shed light on just where certain language processes occur in the brain.

There are a number of unanswered questions in psycholinguistics, such as whether the human ability to use syntax is based on innate mental structures or emerges from interaction with other humans, and whether some animals can be taught the syntax of human language.

Two other major subfields of psycholinguistics investigate first language acquisition, the process by which infants acquire language, and second language acquisition. In addition, it is much more difficult for adults to acquire second languages than it is for infants to learn their first language (bilingual infants are able to learn both of their native languages easily). Thus, sensitive periods may exist during which language can be learned readily.[9] A great deal of research in psycholinguistics focuses on how this ability develops and diminishes over time. It also seems to be the case that the more languages one knows, the easier it is to learn more.[10]

The field of aphasiology deals with language deficits that arise because of brain damage. Studies in aphasiology can both offer advances in therapy for individuals suffering from aphasia, and further insight into how the brain processes language.

CURRICULUM
In formal education, a curriculum (pronounced /kəˈrɪkjʉləm/; plural: curricula, /kəˈrɪkjʉlə/ or curriculums) is the set of courses, and their content, offered at a school or university. As an idea, curriculum stems from the Latin word for race course, referring to the course of deeds and experiences through which children grow to become mature adults. A curriculum is prescriptive, and is based on a more general syllabus which merely specifies what topics must be understood and to what level to achieve a particular grade or standard.
In The Curriculum,[1] the first textbook published on the subject, in 1918, John Franklin Bobbitt said that curriculum, as an idea, has its roots in the Latin word for race-course, explaining the curriculum as the course of deeds and experiences through which children become the adults they should be, for success in adult society. Furthermore, the curriculum encompasses the entire scope of formative deed and experience occurring in and out of school, and not only experiences occurring in school; experiences that are unplanned and undirected, and experiences intentionally directed for the purposeful formation of adult members of society. (cf. image at right.)

To Bobbitt, the curriculum is a social engineering arena. Per his cultural presumptions and social definitions, his curricular formulation has two notable features: (i) that scientific experts would best be qualified to and justified in designing curricula based upon their expert knowledge of what qualities are desirable in adult members of society, and which experiences would generate said qualities; and (ii) curriculum defined as the deeds-experiences the student ought to have to become the adult he or she ought to become.

Hence, he defined the curriculum as an ideal, rather than as the concrete reality of the deeds and experiences that form people to who and what they are.

Contemporary views of curriculum reject these features of Bobbitt's postulates, but retain the basis of curriculum as the course of experience(s) that forms human beings into persons. Personal formation via curricula is studied at the personal level and at the group level, i.e. cultures and societies (e.g. professional formation, academic discipline via historical experience). The formation of a group is reciprocal, with the formation of its individual participants.

Although it formally appeared in Bobbitt's definition, curriculum as a course of formative experience also pervades John Dewey's work (who disagreed with Bobbitt on important matters). Although Bobbitt's and Dewey's idealistic understanding of "curriculum" is different from current, restricted uses of the word, curriculum writers and researchers generally share it as common, substantive understanding of curriculum.[2][3]