Development and Learning

What this topic is about

The review introduces developmental psychology as the study of changes across the lifespan. It raises questions about continuity and change and describes longitudinal and cross-sectional research as ways to study development over time. The example contrasts following the same group over time with comparing separate age groups, while noting cost and participant dropout.

Key ideas

• Development includes physical, cognitive, and social-emotional change.
• The video asks whether traits remain stable or change as people grow older.
• Longitudinal research follows the same participants over time and can be costly or affected by dropout.
• Cross-sectional research compares age groups at one point in time.
• The review uses research methods to frame later examples of developmental change.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.1 Practice Quiz.

Reviewed by Tim Steadman

What this topic is about

Tim traces physical development from prenatal growth through infancy, adolescence, adulthood, and aging. He uses reflexes and developmental milestones to show how bodies change and how early experiences can matter. He also describes prenatal influences and milestones in motor development, placing physical change across multiple stages.

Key ideas

• Prenatal development begins at conception; genetic, maternal, and environmental factors can influence it.
• Newborn reflexes such as rooting and sucking support early behavior.
• The video describes infant motor development and the visual cliff study of depth perception.
• Puberty includes reproductive changes such as menarche and spermarche.
• The review also notes physical changes associated with aging.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.2 Practice Quiz.

Reviewed by Tim Steadman

A reviewed written summary for this topic is not yet available. The Unit video and existing topic practice remain available.

What this topic is about

The review centers on Piaget's account of cognitive development, including schemas and four developmental stages. It also introduces Vygotsky's social and cultural account and compares fluid and crystallized intelligence across adulthood. Vygotsky's zone of proximal development is where support lets a learner do tasks just beyond what they can manage alone.

Key ideas

• Schemas organize information; assimilation adds information to an existing schema, while accommodation changes a schema.
• Piaget's stages are sensorimotor, preoperational, concrete operational, and formal operational.
• The review uses conservation, reversibility, and animism to explain children's changing reasoning.
• Vygotsky emphasizes social interaction, culture, and guidance from more knowledgeable people.
• Fluid intelligence and crystallized intelligence are described as changing differently with age.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.4 Practice Quiz.

Reviewed by Tim Steadman

What this topic is about

Tim describes language as a system for communication that develops from early sounds into words and increasingly complex speech. The review names the parts of language and gives examples of how children learn and sometimes overapply grammatical rules. The review places cooing, babbling, one-word speech, and two-word telegraphic phrases in approximate early developmental order.

Key ideas

• The video distinguishes phonemes, morphemes, semantics, grammar, and syntax.
• Language development is presented through early vocalizations, one-word speech, and later combinations of words.
• Telegraphic speech uses short combinations that communicate a larger idea.
• Overgeneralization occurs when a child applies a regular grammar rule to an irregular word.
• The review describes interaction between biological readiness and experience in language development.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.5 Practice Quiz.

Reviewed by Tim Steadman

What this topic is about

The review follows social and emotional development from infancy through later adulthood. It covers environmental systems, parenting and attachment, adolescent identity, Erikson's psychosocial stages, and adverse childhood experiences, showing how relationships and context shape development over time.

Key ideas

• Bronfenbrenner's ecological systems are introduced as layers of influence, from a child's immediate settings through broader contexts and changes over time.
• The video compares parenting styles and describes attachment patterns, including findings from Harlow's monkey studies.
• It discusses adolescent egocentrism, the social clock, and identity development.
• Erikson's psychosocial stages are used to trace developmental tasks across the lifespan.
• Adverse childhood experiences can have lasting effects; supportive adults, services, and communities may buffer some impacts.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.6 Practice Quiz.

Reviewed by Tim Steadman

What this topic is about

Tim explains classical conditioning as learning through associations between stimuli. The review uses Pavlov's dogs and Little Albert to identify how a neutral stimulus can become associated with an unconditioned stimulus and eventually trigger a learned response.

Key ideas

• An unconditioned stimulus naturally produces an unconditioned response.
• During acquisition, a neutral stimulus is paired with the unconditioned stimulus.
• After learning, the neutral stimulus becomes a conditioned stimulus that can produce a conditioned response.
• The video also describes generalization, discrimination, extinction, and spontaneous recovery.
• Counterconditioning is presented as replacing an unwanted emotional response with a different response.
• Taste aversion is presented as a biological example in which a food can become associated with illness.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.7 Practice Quiz.

Reviewed by Tim Steadman

What this topic is about

The review presents operant conditioning as learning shaped by consequences. It distinguishes reinforcement, which increases behavior, from punishment, which decreases behavior, then describes schedules that determine when reinforcement is delivered. The transcript's examples show that consequences can be added or removed, and schedules can depend on a response count or a time interval.

Key ideas

• Thorndike's law of effect introduces how favorable consequences can make a behavior more likely.
• Positive reinforcement adds a desirable consequence; negative reinforcement removes an aversive condition; both increase behavior.
• Positive and negative punishment are consequences intended to reduce behavior.
• Primary and secondary reinforcers, shaping, and learned helplessness are discussed.
• Fixed- and variable-ratio and interval schedules differ in whether reinforcement depends on response count or time; variable-ratio schedules are described as resistant to extinction.

Review connection

Review this in the Unit 3 Review video, then try the Topic 3.8 Practice Quiz.

Reviewed by Tim Steadman

A reviewed written summary for this topic is not yet available. The Unit video and existing topic practice remain available.