Exam 2 Life Cycle & Development

Early Childhood Cognitive Development

Piaget's Preoperational Stage (Ages 2-6/7)

Symbolic Thought:

Children begin to represent experiences with language, imagery, and symbols. This allows for:

Deferred imitation

Language development

Make-believe play

Mental imagery

Emerging numerical concepts

Limitations:

Centration: Focusing on a single, perceptually salient aspect of an event.

Egocentrism: Difficulty understanding perspectives other than their own (e.g., Piaget's Three-Mountains Problem).

Appearance vs. Reality: Difficulty distinguishing between how something appears and what it actually is (e.g., a sponge appearing as a rock).

Failure of Conservation: Inability to understand that quantity remains the same despite changes in appearance (e.g., liquid in different shaped glasses, number of items spread out).

Vygotsky's Sociocultural Perspective

Child as Apprentice: Cognitive development is viewed as a social process, with children learning through interaction with more knowledgeable others.

Key Themes:

Social Interaction: Development cannot be separated from the social context.

Cultural Tools:

Cognitive development is shaped by the tools (both technical and psychological) passed down through culture.

Technical Tools: Used to act on the environment (e.g., hammer, computer).

Psychological Tools: Used for thinking and learning (e.g., language, symbols, memory strategies).

Internalization: The process by which social interactions and cultural tools are integrated into the individual's cognitive processes (e.g., moving from external speech to private speech to verbal thought).

Intersubjectivity: A shared understanding between participants in an activity, crucial for learning.

Zone of Proximal Development (ZPD): The distance between what a child can do independently and what they can achieve with guidance from a more skilled individual.

Scaffolding: Temporary support provided by a more skilled person to help a learneraccomplish a task within their ZPD.

Theory of Mind (ToM)

Definition: The understanding that others have minds with their own beliefs, desires, intentions, and perspectives that may differ from one's own.

Key Understandings: Knowledge of mental states (intentions, desires, beliefs, thinking, knowing, pretending).

False Belief Tasks: Assessments designed to test ToM, such as the Sally-Anne task, where children must predict where Sally will look for an object based on her false belief.

Development: Typically develops significantly between ages 3 and 5.

Influences:

Number of siblings

Language development (especially using mental state terms)

Imaginary play

Executive function (particularly inhibition)

Cultural background (studies show variation across cultures, e.g., Canada, Samoa, India, Peru).

Executive Function (EF)

Definition: Cognitive processes that control and regulate thoughts and actions, enabling goal- directed behavior.

Three Main Components:

Working Memory: Holding and manipulating information in mind.

Shifting (Cognitive Flexibility): Moving attention between tasks or mental sets.

Inhibition (Inhibitory Control): Suppressing dominant, automatic, or prepotent responses.

"Cold" EF: Involves abstract, decontextualized reasoning (e.g., sorting cards).

"Hot" EF: Involves affect and motivation, often in more emotionally charged situations (e.g., delay of gratification).

Importance: Crucial for academic success, social competence, and emotional regulation.

Early Childhood Language Development

Learning Words

Vocabulary Size: Adults know ~50,000 words; babies start with 0.

Mechanisms:

Social Cues: Toddlers use eye gaze, emotion cues, and pragmatic context to learn word meanings.

Tracking Statistics (Cross-Situational Learning): Identifying word meanings by observing consistent co-occurrences between labels and objects across different situations. Infants, children, and adults can learn these patterns.

Fast Mapping: Quickly learning a word's meaning after only one or a few exposures.

Logical Extension: Using a newly learned word to describe other similar objects.

Toddler Behavior: Toddlers may systematically create situations (e.g., visually isolating an object) to aid learning.

Learning Grammar

Definition: The rules for forming sentences in a language (e.g., word order, agreement).

Development:

Starts with word-gesture combinations and 2-word utterances.

Children begin to apply grammatical rules, even to novel words (e.g., the Wug Test, where children correctly pluralize a made-up word like "wug" to "wugs").

Errors:

Overregularization: Applying regular grammatical rules to irregular words (e.g., "goed" instead of "went," "foots" instead of "feet"). This demonstrates rule-learning, not just imitation.

Sensitive Period Hypothesis

Concept: Language acquisition is easiest during a specific developmental period (often considered before puberty or around age 7).

Evidence:

Second language learning is typically more difficult for older learners.

Case studies of language deprivation.

Development of Nicaraguan Sign Language (NSL), where younger learners transformed a pidgin language into a more complex, grammatical language.

Theoretical Interpretations:

Nativist (Chomsky): A Language Acquisition Device (LAD) may decay with age.

Learning (MacWhinney): "Entrenchment" in one's native language makes learning new structures harder.

"Less is More" (Newport): Language abilities are tied to other cognitive systems (like memory), which change with age, potentially making learning easier for children who can't process as much information.

Early Bilingual Language Learning

Challenges: Learning two sets of sounds, words, and grammatical structures. Languages may be mixed.

Common Questions:

Are bilingual children confused? (No, they typically learn to differentiate languages).

Does bilingualism cause delays? (Generally no; milestones are hit around the same time as monolinguals).

Vocabulary: Bilingual children may have smaller vocabularies in each language compared to monolinguals, but their total conceptual vocabulary (across both languages) is often comparable or larger.

Mutual Exclusivity: Monolingual toddlers often assume one object has only one name.

Bilingual toddlers show less reliance on this strategy, allowing them to learn multiple words for the same concept.

Social Awareness: Bilingual children may perform better on tasks requiring perspective- taking

Adolescent Cognitive Development

Brain Development

Maturation:

Significant brain development continues through adolescence.

White Matter: Continues to increase, indicating more myelination and faster

communication between brain regions.

Gray Matter: In the prefrontal cortex, increases until early adolescence (~age 11-12) and then undergoes synaptic pruning (declines), refining neural pathways.

Key Structures:

Limbic System: Involved in emotion, reward, and motivation; matures earlier.

Prefrontal Cortex (PFC): Responsible for executive functions (inhibition, planning,

decision-making, emotion regulation); matures later.

Dual Process Model:

Suggests two interacting systems:

An intuitive, emotional system (limbic system).

An analytical, reasoning system (PFC).

Adolescents may rely more on the intuitive system due to the earlier maturation of the limbic system.

Synapto genesis and Pruning: A second burst of synaptogenesis followed by accelerated synaptic pruning refines neural connections.

Myelination: Continues, improving the speed and efficiency of neural transmission.

Cognitive Changes

Information Processing: Improvements in attention, memory, and metacognition.

Adolescent Egocentrism:

Imaginary Audience: Belief that others are intensely interested in and judgmental of their appearance and behavior.

Personal Fable: Belief in one's own uniqueness and invincibility.

Piaget's Formal Operations Stage (approx. ages 11/12 - adulthood):

Abstract Thought: Ability to think about concepts that are not concrete (e.g., justice, freedom).

Hypothetical Thinking: Reasoning about possibilities and "what if" scenarios.

Deductive Reasoning: Reasoning from general principles to specific conclusions (top-down).

Inductive Reasoning: Reasoning from specific observations to broader generalizations (bottom-up).

Systematic Thought: Ability to consider multiple variables and test hypotheses

systematically (e.g., balance scale task).

Decision Making: Adolescents may emphasize immediate benefits over long-term costs or risks, influenced by the limbic system and peer evaluation. Adult guidance may be needed.

Influences of Peers

Increased Peer Interaction: Adolescents spend significantly more time with peers than adults.

Peer Groups:

Cliques: Smaller, intimate groups of friends (5-6 individuals).

Crowds: Larger, reputation-based groups (e.g., "jocks," "nerds").

Peer Influence: Can be positive (support, prosocial norms) or negative (encouraging risk- taking, delinquency). Adolescents are highly sensitive to peer evaluation and social norms.

Peer Aggression: Includes physical, verbal, and indirect (relational) aggression. Bullying is repeated aggression from a higher-power individual to a lower-power one.

Adolescent Identity Development

Identity Formation

Erikson's Fifth Psychosocial Crisis: Identity vs. Role Confusion. Adolescents strive to form a coherent sense of self.

Key Domains:

Gender Identity: Sense of self as male, female, both, neither, or another gender.

Ethnic/Racial Identity: Sense of belonging to a particular ethnic or racial group, including attitudes, values, and behaviors.

Sexual Identity: Sense of self regarding sexual orientation and romantic interests.

Political Identity: Beliefs and attitudes about political and social issues.

Religious Identity: Beliefs and values related to spirituality or religion.

Vocational Identity: Aspirations and plans related to career.

Self-Concept: Becomes more abstract, complex, and self-reflective, considering multiple roles and potential selves (actual, ideal, feared). Mismatches between actual and ideal selves can be linked to depression.

Self-Esteem: Fluctuates, with particular importance placed on peer acceptance and physical appearance. Drops often occur in adolescence and later adulthood.

Identity Statuses (Marcia's Framework)

Based on levels of exploration (crisis) and commitment

Identity Diffusion: Low exploration, low commitment. Lack of clear identity or direction.

Identity Foreclosure: Low exploration, high commitment. Identity adopted without exploration, often based on parental or cultural expectations.

Moratorium: High exploration, low commitment. Actively exploring options but not yet committed to an identity.

Identity Achievement: High exploration, high commitment. Explored options and made firm commitments.

Developmental Trend: Typically moves from diffusion/foreclosure towards moratorium and then achievement.

Moral Development

Kohlberg's Stages:

Preconventional: Morality based on self-interest, rewards, and punishments.

Conventional: Morality based on social rules, laws, and approval from others.

Post conventional: Morality based on abstract principles of justice, rights, and universal ethics.

Critiques: Kohlberg's theory has been criticized for potential cultural bias and for focusing primarily on justice/rights (as highlighted by Gilligan's emphasis on care and responsibility).

Haidt's Intuitionist Theory:

Moral judgments are often driven by quick, emotional intuitions, followed by slower reasoning.

Five Moral Foundations: Harm/care, fairness/reciprocity, authority/respect, in group/ loyalty, purity/sanctity.

Development of Academic Skills

Math Skills

Number Concepts:

Approximate Number Sense: Understanding "more" or "less," evident early.

Exact Number Sense: Developed through counting.

Principles of Counting:

One-to-one correspondence (one number per object).

Stable order (numbers are counted in the same sequence).

Cardinality (the last number counted represents the total set size).

Order irrelevance (objects can be counted in any order).

Abstraction (principles apply to any set of objects).

Arithmetic Strategies: Counting from one, counting on, retrieval from memory,

decomposition.

Cultural Influences: Language structure (e.g., number words in Chinese) and instructional practices (quality of education) appear to be more significant than genetics or ethnicity in cross-cultural math performance differences.

Street Math: Children often perform better on math problems presented in a real-world context compared to abstract, formal settings.

Math Disability (Dyscalculia): Affects ~6% of children, characterized by difficulties in memorization, retrieval, strategy use, and conceptual understanding.

Reading skills

Pre-Reading Skills: Visual identification of letters.

Phonological Awareness: The ability to attend to, reflect on, and manipulate the sounds of speech; the strongest predictor of reading proficiency. Includes rhyming, sound identification, blending, and segmenting.

Reading Stages:

Infancy-Kindergarten: Letter identification, name writing, recognizing a few words.

1st-3rd Grade: Translating letters to sounds, blending sounds, faster word identification.

4th-8th Grade: "Reading to learn."

High School/College: Reading complex, diverse texts.

"Reading Wars": Debate between phonics (emphasizing sound-letter correspondence) and whole-word approaches. Phonics is generally considered more effective for early reading acquisition.

Dyslexia: A reading disorder characterized by difficulties in decoding (phonological dyslexia) or visual retrieval (surface dyslexia).

Reading Comprehension: Depends on vocabulary, background knowledge, and

metacognition.

Spelling

Stages of Spelling Development: Pre-communicative, semi-phonetic, phonetic, transitional, correct.

Dialectal Differences: Mismatches between a child's home dialect and the school's standard language can impact spelling and reading.

Heritage Languages: Bilingual education programs that support heritage languages can be beneficial, but abrupt shifts to a dominant second language may negatively impact both language skills and self-esteem.

Environmental Influences and Development

Poverty and Adversity

Language Experience: Significant differences in language input exist based on socioeconomic status (SES). Children from higher-SES families tend to hear millions more words by age 4, correlating with better language skills and cognitive outcomes. Variability within SES levels is also important.

Brain Development: SES is associated with differences in brain structure, such as gray matter volume in the frontal lobe. Poverty reduction interventions (e.g., cash support) have shown initial positive impacts on infant brain activity related to thinking and learning, though long- term effects are still being studied.

Cumulative Stress: Chronic exposure to adversity (housing insecurity, underfunded schools, poor health, food insecurity, etc.) can negatively impact development.

Resilience

Definition: The capacity to adapt well to adversity and overcome stress.

Factors: Protective factors (e.g., supportive relationships, positive coping skills) can buffer the effects of risk factors. Resilience is a dynamic process.

Parental Strengths: Focusing on the strengths and rational choices of families, even with limited resources, is an important perspective. Interventions can aim to support parents in leveraging these strengths.

Fixed vs. Growth Mindset (Carol Dweck)

Fixed Mindset (Entity Theory): Belief that intelligence and abilities are static and cannot be significantly changed. Leads to avoiding challenges and fearing failure.Growth Mindset (Incremental Theory): Belief that intelligence and abilities can be developed through effort, learning, and practice. Leads to embracing challenges and persisting through setbacks.

Impact: A growth mindset is associated with better academic achievement, greater perseverance, and improved learning from mistakes. Praising effort rather than innate talent promotes a growth mindset. Subtle linguistic cues can influence mindset.

Early Learning from Play and Media

Value of Play

Cognitive Benefits: Supports exploration, hypothesis-testing, problem-solving, and is cognitively demanding.

Social Benefits: Promotes meaningful social interaction, language exchange, and the development of social structures.

Emotional Benefits: Play is fun, and positive emotions enhance learning.

Types of Play:

Exploratory Play: Discovering how objects work without instruction. Free exploration leads to more learning than instruction-based play.

Dialogic Book Reading: Interactive reading involving open-ended questions, prompts, and new vocabulary.

Imaginative Play: Using objects symbolically (e.g., a cardboard box) and creating social roles.

Media and Screen Time

Recommendations (American Academy of Pediatrics):

<18 months: Avoid screen media except video-chatting.

18-24 months: Choose high-quality programming and co-view with children.

2-5 years: Limit to 1 hour/day of high-quality programming; co-view.

6+ years: Set consistent limits on time and type of media; ensure it doesn't displace sleep, activity, etc. Designate media-free times/locations.

Infant Media Learning: Infants learn less from videos than from live interaction or direct teaching (Video Deficit Effect). Viewing "baby media" is associated with lower vocabulary.

TV: Can have positive effects (e.g., prosocial behavior on shows like Mister Rogers'

Neighborhood) and negative effects (e.g., increased aggression, reduced parent-child interaction).

Video Games: Can boost attention and prosocial behavior but violent games may increase aggression and decrease empathy.

Social Media: Less understood, but linked to potential increases in social isolation, mental health issues, risky behaviors, and sleep disruption.

Key Principle: Interactive media is generally more beneficial than passive viewing. Moderation and co-engagement are key.

Morality and Prosocial Behavior

Prosocial Behavior:

Actions intended to benefit others (sharing, helping, caring).

Empathy: Feeling the exact emotion someone else is experiencing.Sympathy: Feeling concern or sorrow for someone in need.

Helping: Children show a desire to help from a young age.

Resource Distribution: Children demonstrate preferences for fairness and can be averse to both disadvantageous (getting less) and advantageous (getting more) inequity as they get older. They also show in-group favoritism.

Moral vs. Conventional Violations: Children develop an understanding of rules related to harm/welfare versus social conventions.

Adolescent Cognitive Development

Brain Development

Maturation: Continued development of the prefrontal cortex (PFC) and synaptic pruning leads to more efficient cognitive processing, better impulse control, and refined decision-making.

Limbic System vs. PFC: The limbic system (emotion, reward) matures earlier than the PFC (executive functions), contributing to heightened emotionality and risk-taking in adolescents.

Dual-Process Model: Explains adolescent decision-making as a balance between intuitive/ emotional (limbic) and analytical/rational (PFC) systems.

Cognitive Changes

Formal Operations (Piaget): Ability to think abstractly, hypothetically, and systematically.

Decision Making: Adolescents may prioritize immediate rewards over long-term

consequences, influenced by peer presence and emotional factors.

Adolescent Egocentrism: Includes the imaginary audience and personal fable.

Peer Influence

Increased Importance: Peers become highly influential in social comparison, identity exploration, and decision-making.

Peer Groups: Cliques (small, intimate) and crowds (large, reputation-based) shape social experiences.

Peer Aggression: Includes physical, verbal, and relational forms; bullying is a specific type of repeated aggression.

Adolescent Identity Development

Identity Formation

Erikson's Identity vs. Role Confusion: Adolescents explore various roles, beliefs, and aspirations to form a coherent sense of self.

Domains: Gender, political, religious, vocational, ethnic/racial, and sexual identity are explored.

Self-Concept: Becomes more complex, abstract, and considers multiple possible selves.

Self-Esteem: Influenced by specific valued domains (e.g., peer acceptance, appearance) and can fluctuate, with notable drops in adolescence.

Identity Statuses (Marcia)

Diffusion: No exploration, no commitment.

Foreclosure: Commitment without exploration.

Moratorium: Exploration without commitment.

Identity Achievement: Exploration followed by commitment.

Moral Development

Kohlberg's Stages: Progression from preconventional (rewards/punishment) to conventional (social rules) to postconventional (abstract principles).

Haidt's Intuitionist Theory: Moral judgments are often intuition-driven, supported by reasoning. Key moral foundations include harm/care, fairness, authority, loyalty, and purity.

Middle Childhood Cognitive Development

Piaget's Concrete Operational Stage (Ages 7-11)

Logical Reasoning: Children can reason logically about concrete objects and events.

Key Abilities:

Decentration: Ability to consider multiple aspects of a situation simultaneously.

Reversibility: Understanding that a process can be reversed to return to its original state.

Identity: Understanding that an object remains the same despite changes in appearance

Conservation: Understanding that quantity remains constant despite changes in form.\

Limitations: Difficulty with abstract thought, hypothetical reasoning, and systematic testing of all possibilities. Children struggle with formal logic problems where the premises are counterfactual (e.g., "All bears in the North Pole are white").

Academic Skills Development

Math: Development of number concepts (approximate vs. exact), counting principles, and arithmetic strategies. Cultural and linguistic factors can influence math learning.

Reading: Progression from pre-reading skills to phonological awareness, decoding, and comprehension. Phonics-based approaches are generally favored for early reading instruction.

Spelling: Development follows stages from phonetic to transitional to correct spelling.

Environmental Influences on Development

SES and Language

Language Input: Significant differences in the amount and quality of language input children receive based on family SES. Higher SES is associated with more language exposure and better outcomes.

Brain Development: SES can influence brain structure (e.g., gray matter volume).

Interventions: Programs like "Supermarket Speak" aim to increase parent-child language interaction in low-SES families.

Resilience

Definition: The capacity to adapt well and overcome adversity.

Protective Factors: Supportive relationships, positive coping strategies, and individual characteristics can buffer against negative environmental influences.

Mindsets (Dweck)

Fixed Mindset: Belief that abilities are innate and unchangeable.

Growth Mindset: Belief that abilities can be developed through effort and learning.

Impact: A growth mindset is linked to better academic achievement and perseverance.

Early Learning from Play and Media

Value of Play

Cognitive: Supports exploration, hypothesis-testing, and problem-solving.

Social: Fosters language exchange, social interaction, and understanding of social structures.

Emotional: Play is enjoyable and enhances learning.

Types: Exploratory play, dialogic book reading, imaginative play.

Media and Screen Time

Recommendations: Limits on screen time, emphasis on high-quality content, and co-viewing are recommended by organizations like the AAP.

Effects:

Infants: Learn less from passive screen viewing (Video Deficit Effect).

TV: Can have prosocial or negative effects (aggression, reduced interaction).

Video Games: Can improve attention/prosocial behavior but violent games may increase aggression.

Social Media: Potential links to isolation, mental health issues, and sleep disruption.

Morality and Prosocial Behavior

Prosocial Behavior: Actions that benefit others (sharing, helping).

Fairness: Children develop understandings of fairness, inequity, and in-group favoritism.

Adolescent Health and Physical Development

Puberty

Hormonal Changes: Trigger physical maturation (growth spurt, sexual development).

Timing: Age of onset is declining, influenced by factors like body weight, environmental toxins, and stress. Early or late puberty can have various health and social effects.

Sleep: Adolescents require about 9 hours of sleep but often get less due to biological shifts in circadian rhythms and social factors. Sleep deprivation is linked to mood issues and academic problems. Later school start times are associated with improved adolescent well- being.

Body Image: Concerns about body shape and size are common, leading to "fat talk" and potentially contributing to eating disorders.

Adolescent Cognitive Development

Brain Development

Prefrontal Cortex (PFC) vs. Limbic System: The PFC (executive functions) matures later than the limbic system (emotion, reward), influencing adolescent decision-making, risk-taking, and emotional regulation.

Dual-Process Model: Adolescents often rely on intuitive, emotional processing alongside more analytical reasoning.

Cognitive Changes

Formal Operations (Piaget): Ability to think abstractly, hypothetically, and systematically.

Decision Making: Can be influenced by immediate rewards, peer evaluation, and the imbalance in brain system maturation.

Egocentrism: Imaginary audience and personal fable.

Peer Influence

Increased Importance: Peers significantly influence identity, behavior, and social norms.

Peer Groups: Cliques and crowds shape social interactions and belonging.

Adolescent Identity Development

Identity Formation

Erikson: Identity vs. Role Confusion is the central crisis.

Domains: Exploration of gender, ethnic/racial, sexual, political, religious, and vocational identities.

Self-Concept: Becomes more abstract and considers multiple possible selves.

Identity Statuses (Marcia)

Diffusion, Foreclosure, Moratorium, Achievement: Categories describing exploration and commitment to identity.

Moral Development

Kohlberg: Stages progress from pre conventional to conventional to post conventional reasoning.

Haidt: Emphasizes intuition and five moral foundations.

Middle Childhood Cognitive DevelopmentPiaget's Concrete Operational Stage (Ages 7-11)

Logical Reasoning: Ability to think logically about concrete events and objects.

Key Abilities: Decentration, reversibility, identity, conservation.

Limitations: Difficulty with abstract concepts and hypothetical reasoning.

Academic Skills

Academic Skills

Math: Development of number concepts, counting principles, and arithmetic strategies.

Cultural and instructional factors are key.

Reading: Focus shifts to "reading to learn," building on phonological awareness and decoding skills.

Spelling: Development follows stages from phonetic to correct spelling.

Environmental Influences on Development

SES and Language

Language Input: Higher SES is correlated with greater language exposure and better developmental outcomes.

Brain Structure: SES can influence brain development.

Resilience

Definition: Adapting well despite adversity.

Factors: Protective relationships and individual coping skills contribute to resilience.

Mindsets (Dweck)

Fixed Mindset: Belief that abilities are static.

Growth Mindset: Belief that abilities can be developed through effort.

Impact: Growth mindset is linked to better academic performance and perseverance.

Early Learning from Play and Media

Value of Play

Benefits: Supports cognitive (exploration, problem-solving), social (language, interaction), and emotional development.

Types: Exploratory, dialogic reading, imaginative play.

Media and Screen Time

Recommendations: Limits, co-viewing, and prioritizing quality content.

Effects: Variable impacts depending on content and context; passive viewing generally less beneficial than interactive or co-viewed media

Morality and Prosocial Behavior

Prosocial Behavior: Helping, sharing, caring actions.

Fairness: Children develop a sense of fairness and equity.