PSYC 201 -04 : Chapter 7

Fundamentals of Cognition and Thinking

• Cognition Definition: Cognition encompasses all mental activities involved in acquiring, retaining, and using knowledge.

• Thinking Definition: Thinking is defined specifically as the manipulation of mental representations of information in order to draw inferences and conclusions.

• Key Theme: Thinking serves as an umbrella term referring to how individuals utilize existing knowledge to analyze complex situations, solve problems, and make decisions.

The Building Blocks of Thought

• Primary Mental Representations: Thinking primarily relies on the manipulation of two main forms of mental representations: mental images and concepts.

• Mental Images:

  • Refer most commonly to visual "pictures" formed within the mind.

  • Are not restricted to visual sensory modalities; mental representations can also encompass auditory, tactile, olfactory, or gustatory senses.

  • Are manipulated cognitively in the exact same manner that visual images of actual physical objects are manipulated in physical space.

• Concepts:

  • Defined as a mental category of objects or ideas based on shared properties.

  • Act as a cognitive shorthand that economizes thought processes and reduces cognitive load.

  • Formed through learning the essential attributes and characteristics of specific categories.

  • Prototype: The single most typical or ideal instance of a particular concept.

  • Exemplar: Individual, specific instances of concepts or categories stored directly in long-term memory.

• Neural Mechanisms of Mental Imagery:

  • Neuroimaging studies demonstrate that the same brain areas are activated during visual perception (looking at an object) and mental imagery (imagining the object).

  • Fusiform Facial Area (FFA): Brain region activated both when physically viewing a face and when visualizing a face in the mind's eye.

  • Parahippocampal Place Area (PPA): Brain region activated both when viewing pictures of a place and when imagining a place.

Problem-Solving Strategies and Cognitive Obstacles

• Problem Solving Definition: Problem solving refers to active thinking and behavior directed explicitly toward attaining a goal that is not readily available.

• Problem-Solving Strategies:

  • Trial and Error: Systematically trying a variety of solutions and eliminating those that fail until a working solution is found.

  • Algorithms: Following a specific, step-by-step rule, procedure, or method (such as a mathematical formula) that guarantees an accurate solution every time it is properly executed.

  • Heuristics: Following a general rule-of-thumb strategy to reduce the total number of possible solutions, though it does not guarantee success.

  • Insight: A sudden realization of how a problem can be solved, often occurring after continuous effort or during a period of cognitive rest.

• Obstacles to Problem Solving:

  • Functional Fixedness: The cognitive tendency to view objects as functioning only in their customary or customary way. This prevents individuals from recognizing the full spectrum of alternative ways an object might be used to solve a problem.

  • Mental Set: The tendency to persist in solving problems using strategies or solutions that have proven successful in the past.

  • Can prevent an individual from discovering novel, more effective solutions, especially in domains where they are highly trained or knowledgeable.

  • Can occasionally serve as a helpful heuristic when past strategies remain applicable.

Decision-Making Models and Heuristics

• Key Theme: Individuals deploy distinct cognitive decision-making strategies depending on the nature, complexity, and number of available options.

• Decision-Making Models:

  • The Single-Feature Model: Making a decision by isolating and evaluating a single feature of the choices.

  • The Additive Model: Systematically evaluating and rating all important features for each alternative choice, then summing the scores to find the optimal option.

  • The Elimination-by-Aspects Model: Rating available choices based on specific criteria and systematically discarding any alternative that fails to satisfy a desired standard, regardless of its other positive attributes.

• Decisions Involving Uncertainty (Estimating Probability):

  • The Availability Heuristic: Estimating the likelihood or frequency of an event based on how easily prior instances of that event come to mind.

  • The less accurately long-term memory reflects the true frequency of an event, the less accurate the probability estimate will be.

  • Most commonly relied upon when individuals use information stored in long-term memory to estimate probabilities.

  • The Representativeness Heuristic: Estimating the likelihood of an event by comparing its features to a prototype of that event.

  • Can produce faulty estimates if variations in prototypes or the actual base-rate frequency of prototypes in the population are ignored.

  • Most commonly utilized when individuals compare distinct variables to make predictions.

Persistence of Unwarranted Beliefs

• Flaws in Evidence Processing: Specific cognitive obstacles impair logical thinking and alter how individuals interpret evidence, especially evidence contradicting existing beliefs.

• Key Obstacles to Logical Thinking:

  • The Belief-Bias Effect: Evaluating arguments based on how believable the conclusions sound rather than on logical validity.

  • Confirmation Bias: Seeking out, favoring, and remembering information that confirms pre-existing beliefs while disregarding contradictory evidence.

  • Fallacy of Positive Instances: Remembering occurrences that confirm a belief while completely forgetting instances that disconfirm it.

  • Overestimation Effect: Overestimating the frequency or likelihood of rare or dramatic events.

• Mitigation: Deploying structured critical thinking skills is necessary to systematically identify and avoid these cognitive biases.

Structure and Characteristics of Language

• Language Definition: A system for combining arbitrary symbols to produce an infinite number of meaningful statements.

• Core Characteristics of Language:

  • Purpose: To express meaningful information in a format that can be understood by others.

  • Shared Symbols: Relies on written words, spoken sounds, or physical gestures shared across a linguistic community.

  • Rule-Governed Structure: Follows strict grammatical and syntactic rules.

  • Generativity / Creativity: Allows speaker to generate endless original sentences.

  • Displacement: The capacity to communicate meaningfully about objects, abstract ideas, or events that are not physically present in the immediate environment or time frame.

• American Sign Language (ASL):

  • Used by hearing-impaired individuals and possesses all formal requirements of language, including full syntax, displacement, and generativity.

  • Neuroimaging studies demonstrate that spoken language and sign language activate identical brain regions in hearing speakers and deaf signers, respectively (Hickok et al., 2001; Lubbadeh, 2005).

Language Development in Children

• Innate Capacity: Noam Chomsky proposed that every child is born with an innate predisposition to learn any language.

• Infant-Directed Speech:

  • A universal speech style used instinctively by adults when communicating with infants.

  • Characterized by simplified vocabulary, short sentences, high pitch, and exaggerated intonation and facial expressions.

  • Deaf mothers using sign language modify hand gestures in an analogous fashion when communicating with infants.

• Vocabulary Acquisition Dynamics:

  • Comprehension Vocabulary: Words understood by an infant or child.

  • Production Vocabulary: Words understood and actively spoken by an infant or child.

  • Children acquire comprehension vocabulary more than twice as fast as production vocabulary.

• Sequential Stages of Language Development:

  • Cooing Stage: Begins at approximately $3\text{ months}$; consists of repeating simple vowel sounds such as ahhhhh or ooooo.

  • Babbling Stage: Begins at approximately $5\text{ months}$; adds consonants to vowels, stringing repetitive sounds like ba-ba-ba-ba, de-de-de-de, or ma-ma-ma-ma.

  • One-Word Stage: Emerges around $12\text{ months}$ ($1\text{ year}$).

  • Two-Word Stage: Emerges around $24\text{ months}$ ($2\text{ years}$).

  • Language Spurt: Occurs around $2.5\text{ years}$ ($30\text{ months}$); rapid expansion of vocabulary and grammatical mastery.

  • Critical Window Decline: The natural ease of learning a new language begins to decline around age $6$ or $7$

Cognitive Effects of Bilingualism

• Benefits of Balanced Proficiency: Contemporary research confirms substantial cognitive advantages for bilingual individuals, particularly those maintaining balanced proficiency across both languages:

  • Enhanced executive control of attention and superior inhibition of distracting stimuli.

  • Superior ability to switch attention flexibly between novel stimuli.

  • Advanced capacity for perspective-taking when interacting with others.

  • Accumulation of cognitive reserve that delays and protects against age-related cognitive decline in late adulthood.

Measuring Intelligence: Historical Foundations

• Definition of Intelligence: The global capacity to think rationally, act purposefully, and deal effectively with the environment.

• Alfred Binet (1857–1911):

  • Commissioned by the French government to create test batteries measuring diverse mental abilities.

  • Focused specifically on elementary mental faculties.

  • Goal was to identify "slow" children needing specialized educational assistance.

  • Developed the foundational concept of mental age (MA).

• Lewis Terman and the Stanford-Binet Test:

  • Translated and standardized Binet's scales at Stanford University, creating the Stanford-Binet Intelligence Scales.

  • Adopted the concept of the Intelligence Quotient (IQ).

  • IQ provided a score derived by dividing an individual's mental age ($\text{MA}$) by their chronological age ($\text{CA}$) and multiplying by $100$:

$\text{IQ} = \frac{\text{MA}}{\text{CA}} \times 100$

• World War I and Group Intelligence Testing:

  • The U.S. Army required rapid mass testing options for millions of military recruits.

  • Army Alpha Test: Administered in writing to literate recruits.

  • Army Beta Test: Administered orally or non-verbally to recruits and draftees who could not read English.

  • Indiscriminate overuse led to test misuse, institutional discrimination, public skepticism, and widespread hostility.

• Immigrant Testing at Ellis Island:

  • Early psychometricians claimed that $80\%$ of Hungarians, $79\%$ of Italians, and $87\%$ of Russians evaluated were "feeble-minded."

  • Misapplied mental testing was inappropriately weaponized to lobby for federal immigration restrictions.

Modern Intelligence Testing and Psychometrics

• The Wechsler Intelligence Scales:

  • David Wechsler addressed flaws in the Stanford-Binet test by engineering tests tailored specifically for adult populations.

  • Developed the Wechsler Adult Intelligence Scale (WAIS), incorporating $11$ subtests across verbal and performance domains.

  • Shifted calculation from traditional mental age ratios to deviation IQ, comparing an individual's score directly to standardized performance norms of their age cohort.

  • Modern editions include the WAIS-IV, the Wechsler Intelligence Scale for Children (WISC), and the Wechsler Preschool and Primary Scale of Intelligence (WPPSI).

• Essential Requirements of Psychological Testing:

  • Standardization: Administration of a test to a large, representative sample under strictly uniform conditions to establish population norms.

  • Reliability: The ability of a test to consistently yield similar scores when administered to the same individuals on repeated occasions under identical conditions.

  • Validity: The ability of a test to accurately measure the specific construct it is engineered to measure.

• Normal Curve Distribution of IQ Scores:

  • IQ scores follow a symmetric normal distribution (bell curve) centered at a mean of $100$ with a standard deviation of $15$ points.

  • Normal Range: Scores between $85$ and $115$ encompass $68\%$ of the population ($100 \pm 15$).

  • Extended Ranges: Scores between $70$ and $130$ encompass $95\%$ of the population ($100 \pm 30$).

  • Scores from $55$ to $70$ and $130$ to $145$ each account for $2\%$ of the population.

  • Scores below $55$ and above $145$ each account for $0.1\%$ of the population.

  • Sample Calculation: A $10\text{-year-old}$ child ($\text{CA} = 10$) scoring at a mental age of $13$ ($\text{MA} = 13$) achieves an IQ of $130$:

$\text{IQ} = \frac{13}{10} \times 100 = 130$

Theoretical Approaches to the Nature of Intelligence

• Core Theoretical Controversies:

  • Debate over whether intelligence represents a single general ability ($g$ factor), a cluster of independent primary mental abilities, or a hybrid combination of both.

  • Debate over whether intelligence definitions should be restricted strictly to academic and psychometric abilities measured by standard IQ tests or expanded to broader skills and talents.

• Howard Gardner’s Theory of Multiple Intelligences:

  • Asserted that mental abilities are independent of one another and cannot be captured by a single overall IQ score.

  • Evaluated diverse skills and products valued across distinct cultures.

  • Identified eight distinct, independent intelligences.

  • Note: Gardner's model lacks empirical support in psychological research.

• Robert Sternberg’s Triarchic Theory of Intelligence:

  • Emphasized both universal cognitive processes and cultural adaptation.

  • Defined three distinct forms of successful intelligence:

  • Analytic Intelligence: Mental processes used in learning how to solve academic problems.

  • Creative Intelligence: Ability to handle novel situations and generate novel solutions.

  • Practical Intelligence: Ability to adapt effectively to real-world environments ("street smarts").

Environmental Factors, Cultural Bias, and Performance Modifiers

• Heritability vs. Environment (The Two Pots Analogy):

  • Demonstrates why group differences in average IQ scores cannot be attributed to genetic differences.

  • If identical seeds are planted in Pot A (rich soil, abundant nutrients) and Pot B (poor soil, few nutrients):

  • Differences in plant height within Pot A are due to genetic variation (since environment is held constant).

  • The average height difference between Pot A and Pot B is entirely due to environmental differences.

  • Because environments differ dramatically, no conclusions regarding genetic superiority or inferiority between groups can be drawn.

• Cultural Bias in Testing:

  • Standardized tests reflect the cultural values, knowledge, and language of the culture in which they were created.

  • Cultural background significantly impacts test-taking behaviors, motivation, and familiarization.

• Cross-Cultural Studies of Discrimination: The Burakumin:

  • The Burakumin of Japan are genetically and racially indistinguishable from mainstream Japanese people, but have endured centuries of social outcast discrimination.

  • Overt discrimination against the approximately $1\text{ million}$ Buraku people remains persistent in employment and marriage (Ikeda, 2001).

  • In Japan, Burakumin average IQ scores are approximately $10$ to $15$ points below mainstream Japanese citizens, demonstrating the profound impact of institutionalized discrimination on cognitive test scores.

• Stereotype Threat:

  • A psychological predicament in which fear of confirming a negative stereotype about one's social, gender, or racial group creates severe anxiety and self-doubt.

  • Fear of confirming the negative expectation triggers physiological arousal and distracting intrusive thoughts.

  • The resulting stress directly impairs working memory capacity, concentration, and problem-solving execution, leading to lower performance on standardized tests.