PSY 369: Psycholinguistics What is Language and how is it related to Cognitive Psychology? What is language? What do you think language is? tweet tweet trill Johnny wanna cracker tlhIngan Hol Dajatlh'a'? Johnny wanna cracker Do you speak Klingon? What is language? What do you think language is? A difficult question to answer: “Language is a purely human and non-instinctive method of communicating ideas, emotions and desires by means of voluntrily produced symbols.” Edward Sapir (1921) “A language is a set (finite or infinite) of sentences, each finite in length and constructed out of a finite set of elements.” Noam Chomsky (1957) Define: language What is language? Some generally agreed upon characteristics A system of communication Symbolic Language use is under our individual control Language is systematic Elements are used to represent something other than itself Voluntary Thought be many to be uniquely human There is hierarchical structure that organizes linguistic elements Modalities Spoken, written, signed (sign language) Assumed primacy of speech - it came first Language is complex Studied from a variety of perspectives Linguistics Psycholinguistics Language in the world Language in the mind Neurolinguistics Language in the brain Demos Read a list and then have them recall the items 1, 9, 8, 7, 1, 7, 7, 6, 2, 0, 1 , 4 1987, 1776, 2014 Car gravel painting tree running bright cold book chopsticks mansion television Colorless green ideas sleep furiously while gray Irish sheep graze voraciously Play/show some sentences from google translate (mute the projector here) Demos Read a list and then have them recall the items 1, 9, 8, 7, 1, 7, 7, 6, 2, 0, 1 , 4 1987, 1776, 2014 Car gravel painting tree running bright cold book chopsticks mansion television Colorless green ideas sleep furiously while gray Irish sheep graze voraciously Play/show some sentences from google translate Japanese Russian The record store is closed today The record store is closed today The record store is closed today German Demos Wrestling Prison Rocky slowly got up from the mat, planning his escape. He hesitated a moment and thought. Things were not going well. What bothered him most was being held, especially since the charge against him had been weak. He considered his present situation. The lock that held him was strong but he thought he could break it. He knew, however, that his timing would have to be perfect. Rocky was aware that it was because of his early roughness that he had been penalized so severely - much too severely from his point of view. The situation was becoming frustrating; the pressure had been grinding on him for too long. He was being ridden unmercifully. Rocky was getting angry now. He felt he was ready to make his move. He knew that his success or failure would depend on what he did in the next few seconds. Overview of comprehension Perception Input The cat chased the rat. Attention Memory Language Word Syntactic Semantic & perception recognition analysis pragmatic analysis c dog a cap cat S wolf t NP VP tree NP the cat V yarn /k/ chased the rat cat /ae/ claw /t/ fur hat What is Cognitive Psychology? It is the body of psychological experimentation that deals with issues of human memory, language use, problem solving, decision making, and reasoning. “Cognitive Psychology refers to all processes by which the sensory input is transformed, reduced, elaborated, stored, recovered, and used.” Ulric Neisser (1967) Attention Limited capacity resource Filtering capabilities Spotlight analogy Resource pool Early selection Late selection Integration function Memory Sensory Stores Short-term memory Working memory Long-term memory Declarative Episodic Semantic Procedural The ‘standard model’ Information Information ‘flows’ from one memory buffer to the next Sensory memory Properties High capacity Extremely fast decay Separate systems for different sensory modalities Short term memory Properties rapid access (about 35 milliseconds per item) limited capacity (7+/- 2 chunks; George Miller, 1956) fast decay, about 12 seconds (longer if rehearsed or elaborated) Short term memory Increasing your STM span Chunking Grouping information together into larger units I’ll read a few more lists of words for you to recall Barn snow tree car rock book key plant dress cup slide lamp Dog cat mouse shoe sock toe couch pillow blanket table desk chair Down flowers the by with chased yellow several girls a river boy. A boy chased several girls with yellow flowers down by the river. Notice that the previous two are the same words, but the syntax allows for grouping into meaningful ‘chunks’ Long term memory Properties Capacity: Unlimited? Duration: Decay/interference, retrieval difficulty Organization Multiple subsystems for type of memory Associative networks Long term memory: Organization This theory suggests that there are different memory components, each storing different kinds of information. Declarative The Multiple Memory Stores Theory Declarative episodic Episodic - memories about events Semantic - knowledge of facts Procedural - memories about how to do things (e.g., the thing that makes you improve at riding a bike with practice). Procedural semantic Long term memory: Organization How is semantic memory structured? Networks Attention “ Everyone knows what attention is. It is the taking possession by the mind, in clear and vivid form, of one out of what seem several simultaneously possible objects or trains of thought. Focalization, concentration, of consciousness are of its essence. It implies withdrawal from some things in order to deal effectively with others…” William James (1890) However Britt Anderson recently writes: “There is no such thing as attention” (Frontiers in Psychology, 2011). Attention: An information filter Information bottleneck. There is so much info, only some is let through, while the rest is filtered out Early selection (e.g., Broadbent, 1958, Triesman, 1964) Late filters (Deutsch & Deutsch, 1963) Everything gets in, bottleneck comes at response level (can only respond to limited number of things) Cocktail party effect, dichotic listening Attention: Limited resource Only have so much ‘energy’ to make things go, so need to divide it and allocate it to processes Single pool (e.g., Kahneman, 1973) Multiple pools (e.g., Navon & Gopher, 1979) Central bank of resources available to all tasks that need it Several banks of specialized resources – divided up in terms of input/output modalities, stages of info processing (perception, memory, response output) Dual task experiments Attention: Integration Attention is used to ‘glue’ features together Feature integration theory & Visual search exps Where’s Waldo Find the X X X X X XX XX XX X XX X O OO XO XO O XX X X O X O X Pop out Slow search Other Common Theoretical Issues Example: Letter Recognition - How do we recognize a group of lines and curves as letters? Mechanisms Information Flow Template matching Feature detection and integration Top-down vs. Bottom-up Modular vs. Interactive Automatic vs. Controlled processing Letter Recognition A Feature Detection based theory Selfridge’s Pandemonium system, 1959 Bottom-up & Top-down Terms come from computer science E Bottom up (data driven) relies upon evidence that is physically present, building larger units based on smaller ones Top down (knowledge driven, context), using higherlevel information to support lower-level processes T E FROG C T Word Recognition Interactive Activation Model (AIM) Previous models posed a bottom-up flow of information (from features to letters to words). IAM also poses a top-down flows of information Nodes: • (visual) feature McClelland and Rumelhart, (1981) • (positional) letter • word detectors • Inhibitory and excitatory connections between them. Automaticity Controlled processes Require resources Under some volitional direction Slow, effortful Automatic processes Require little attention Obligatory Fast Summing up Psycholinguistic view Language and cognition are inextricably linked Notice that almost all of the experiment demonstrations involved language elements as stimuli