psych ch 10

Language and Cognition

10 Introduction

• Before the 9/11 attacks, the Bush administration received several warnings from the CIA regarding bin Laden's plans to hijack planes and attack the U.S.

• The administration faced criticism for not heeding these warnings, which represented a small fraction of a vast amount of information reaching the White House daily.

• Humans struggle with sifting through information and making future-oriented judgments.

10.1 Language

• The human brain is highly adapted for language learning, with babies acquiring language without formal teaching.

• Linguists have established that all languages share fundamental characteristics.

Basic Elements of Language

• Phonemes: Basic speech sounds of a language; English contains roughly 50 phonemes.

• Morphemes: Simple units of meaning formed from phonemes; morphemes combine to create words.

Example: Assembling Phonemes into Morphemes

• The word "unfathomable" can be broken down:

  • Morpheme "un" (meaning "not")

  • Morpheme "fathom" (meaning "understand")

  • Morpheme "able" (meaning "capable of")

• Two phonemes: "u," "n"

• Five phonemes: "f," "a," "th," "o," "m"

• Four phonemes: "a," "b," "u," "|"

Linguistic Concepts

• Semantics: The study of word meanings.

• Syntax: The rules for constructing phrases and sentences.

  • Knowledge of the symbols used to depict phonemes allows a speaker to arrange sentences that convey information.

• Rearranging words in a language can create sentences with radically different meanings.

• Language is described as generative, meaning it can produce numerous offspring of expressions.

Linguistic Structures

• Noam Chomsky's Theory: Every sentence consists of two layers of representation:

  • Surface Structure: The actual words in a sentence.

  • Deep Structure: The underlying meaning conveyed by the sentence.

• Multiple sentences can share the same deep structure, supporting the idea of a universal grammar shared by all languages.

Development and Evolution of Language

• Speech and language may have evolved from gestures used by our ancestors; modern humans still utilize hand gestures alongside speech.

• Animal Communication: Many species, like birds and primates, also use gestures and vocalizations for communication.

  • Example: Courtship displays in birds, arm shaking in chimpanzees as a threat signal.

• Songbirds: Males learn to sing complex vocalizations crucial for social and reproductive success, demonstrating hemispheric contributions similar to human language processing.

Genetic Contributions to Language

• Genetic studies indicate the FOXP2 gene mutation affects language abilities, linked to different brain activity patterns in Broca's area during language tasks in affected individuals.

• FOXP2's evolution in humans compared to other great apes suggests language in humans has evolved from pre-existing animal communication systems.

• Research supports that the ability to communicate existed before language developed.

Language Acquisition in Children

• Babies exhibit a capacity to learn language without instruction and show interest in speech and interaction with talking faces.

• Children undergo a series of language development milestones, though individual timing may vary.

Typical Stages of Childhood Language Development

Phoneme Recognition in Infants

• By 6 months, infants begin babbling, emitting meaningless sounds mimicking speech.

• Telegraphic Speech: Simplified speech used by children during early developmental stages.

• Babies distinguish phonemes rapidly and lose the ability to discern phonemes not used in their environment over time.

Research on Phoneme Discrimination

• Experiment on phoneme differentiation explored through a sucking reflex:

  • Method: Babies suck on pacifiers to receive sound stimuli; increased sucking indicates discrimination of new sounds.

  • Conclusion: Babies are capable of distinguishing phonemes and can identify sounds from all known languages.

Role of Motherese in Language Development

• Motherese refers to the high-pitched, exaggerated speech that caregivers use, enhancing infants' language acquisition.

Williams Syndrome Insights

• Individuals with Williams syndrome (caused by gene deletions on chromosome 7) have strong verbal skills but limited visual-spatial abilities.

Critical Period for Language Development

• There exists a sensitive period for language learning; lack of exposure during this time can severely hinder language development.

• Children from bilingual families become fluent in both languages and tend to be better at ignoring distractions and performing cognitive tasks.

Relationship Between Language and Thought

• Linguistic Determinism: The hypothesis that language shapes thought.

• Linguistic Relativism: A more accepted view that language influences thought but does not strictly determine it.

• Cultural context can shape cognitive processes and perceptions, as observed in color perception studies and spatial orientation in language speakers.

Cognitive Psychology Overview

• Cognitive Psychology studies how we acquire, process, and retain information.

• Conceptual understanding includes sensation, perception, judgment, reasoning, and learning processes.

Categorization and Concepts

• Concepts enable categorization, where individuals recognize shared characteristics among objects or events, simplifying cognitive processing.

• Prototypes: Represent the essence of what a category entails, varying across cultures.

Reaction Time and Mental Processing

• Reaction time gauges the mental processing required for responses to stimuli, often increasing with task complexity.

Mental Imagery and Time Perception

• Mental images can be manipulated mentally, with the time taken to rotate these images indicating processing time.

Skill Acquisition Stages

• Cognitive Phase: Beginners consciously navigate tasks.

• Associative Phase: Skills become smoother with fewer errors but still require concentration.

• Autonomous Phase: Performance becomes automatic with minimal attention needed.

• Mastery requires extensive practice, generally quantified as 10,000 hours for expertise.

Flow States in Performance

• Flow: A mental state where individuals are fully immersed in activities, resulting in enhanced performance and enjoyment.

Attention and Perception

• Attention is limited, affecting our interaction with the environment and our observation accuracy.

• Attentional Blink: A brief lapse in attention following a stimulus can lead to missed information.

Decision-Making and Problem-Solving

• Decision Making involves evaluating options and selecting a course of action; prone to biases and errors.

• Judgment Errors: Includes miss (failing to detect a signal) and false alarms (incorrectly reporting a signal).

• The Anchoring Effect shows how irrelevant information can sway people’s judgments unconsciously.

• Framing Effect: Risk of decision-making biases based on how information is presented.

• Problem-Solving includes identifying initial states, goal states, and constraints, with solutions found via algorithms or heuristics.

Conclusion: Behavioral and Cognitive Outcomes

• Cognitive psychology embraces the concept that our experiences shape brain function and emotional regulation.

• The mind is seen as a product of brain activity, showcasing the complexity of human cognition and decision-making processes in daily life.