Developmental Psychology

Watch

• The psychology of narcissism - W. Keith Campbell ↗TED-Ed
• The mysterious workings of the adolescent brain - Sarah-Jayne Blakemore ↗TED-Ed
• What is the most important influence on child development | Tom Weisner | TEDxUCLA ↗TEDx Talks
• Get “Inside the Mind of a Baby” | Stella Lourenco | TEDxEmory ↗TEDx Talks
• Mental health and resilience - the secrets of inner strength | DW Documentary ↗DW Documentary
• Your Brain: Who's in Control? | Full Documentary | NOVA | PBS ↗NOVA PBS Official

Read

• The Psychology of the Child ↗This concise work distills the seminal theories of cognitive development, offering an indispensable primer on how children construct their understanding of the world.Jean Piaget and Bärbel Inhelder
• Mind in Society: The Development of Higher Psychological Processes ↗A posthumous collection of essays, this volume introduces the revolutionary concept of sociocultural theory, highlighting the profound impact of social interaction and culture on cognitive growth.Lev Vygotsky
• Attachment and Loss, Vol. 1: Attachment ↗The foundational text on attachment theory, this work meticulously details the enduring emotional bonds between humans, fundamentally reshaping our understanding of early relationships and their lifelong impact.John Bowlby
• The Nature of LoveThis landmark experimental paper, using rhesus monkeys, challenged prevailing views on maternal bonding by demonstrating the primacy of comfort and contact over mere sustenance in early development.Harry F. Harlow
• The Scientist in the Crib: What Early Learning Tells Us About the Mind ↗This insightful work presents a compelling argument that infants are not passive recipients of information but active, intuitive scientists, constantly forming and testing hypotheses about the world.Alison Gopnik, Andrew N. Meltzoff, Patricia K. Kuhl

Voices to follow

• Alison Gopnik ↗Her work illuminates the sophisticated learning mechanisms of infants and young children, positing them as active, intuitive scientists.Professor of Psychology, University of California, Berkeley
• Carol Dweck ↗A pioneer in understanding how 'mindsets' profoundly shape individuals' responses to challenges and their developmental trajectories.Professor of Psychology, Stanford University
• Angela Duckworth ↗Her research on 'grit' and self-control provides compelling evidence for the non-cognitive factors crucial to long-term success and well-being.Professor of Psychology, University of Pennsylvania
• Michael Tomasello ↗His comparative studies of human and ape cognition offer critical insights into the evolutionary and developmental origins of unique human social learning and cooperation.Co-Director, Max Planck Institute for Evolutionary Anthropology

Glossary

• AdolescenceThis is the period of transition from childhood to adulthood, usually between the ages of 10 and 19. During this time, teenagers experience significant physical, emotional, and social changes as they figure out who they are. For example, during adolescence, many teens start to question rules, seek more independence from their parents, and spend more time with friends.
• AttachmentThis refers to the strong emotional bond that forms between a child and their primary caregivers, like parents. This bond is crucial for a child's sense of security and future social development. For example, a baby crying when their parent leaves the room and being comforted when they return shows a healthy attachment.
• ChildhoodThis is the period of human development from birth until the start of adolescence, typically covering infancy, toddlerhood, and the school-age years. It's a time of rapid learning and growth in all areas. For example, during childhood, kids learn to read, write, play complex games, and form friendships.
• Cognitive DevelopmentThis refers to how our thinking, problem-solving, memory, and language skills grow and change over time. It's about how our brains learn to understand the world better. For example, a young child might believe that a tall, thin glass holds more water than a short, wide one, even if they contain the same amount, but an older child understands they are equal.
• Developmental MilestoneThese are specific skills or behaviors that most children achieve by a certain age, like rolling over, walking, or saying their first words. They act as checkpoints to see if a child is developing typically. For example, learning to ride a bicycle without training wheels is a common developmental milestone for children around age 5 or 6.
• Developmental PsychologyThis is the study of how people grow, change, and learn throughout their entire lives, from birth until old age. It looks at changes in thinking, feelings, and the body. For example, a developmental psychologist might study how a baby learns to talk or how teenagers develop their own sense of self.
• IdentityThis is your sense of who you are as a unique person, including your beliefs, values, goals, and personality traits. Developing a strong identity is a key task during adolescence. For example, a teenager exploring different hobbies, friend groups, or styles of clothing is often trying to figure out their own identity.
• Nature vs. NurtureThis is a big debate in psychology about whether our development is mostly shaped by our genes (nature) or by our environment and experiences (nurture). It asks if you are the way you are because of what you were born with or what happened to you. For example, someone might wonder if a talent for music is inherited (nature) or developed through years of practice and lessons (nurture).
• Physical DevelopmentThis is about the changes in our body, brain, motor skills (like walking or writing), and health as we grow. It covers everything from gaining height to developing coordination. For example, a baby first learns to crawl, then walk, and later can run and jump with much better balance.
• Social-Emotional DevelopmentThis describes how we learn to understand and manage our feelings, build relationships with others, and understand social rules. It's about growing up emotionally and socially. For example, a toddler might throw a tantrum when they don't get their way, but an older child learns to express their frustration with words.

Threads 5

Where this connects to other fields, and why it's worth knowing.

• Atheism Religion

  Little kids naturally assume everything exists 'for a reason', clouds are for raining, rocks are for animals to scratch on. That instinct to see purpose and design is our brain's factory setting. Which flips the usual story: believing in a designer comes easy, while atheism is the harder position you have to learn.

• Language Acquisition Literature

  There's a hidden deadline for learning language. A girl called 'Genie,' locked away with almost no talking until age thirteen, could later learn words but never really mastered grammar, no matter how hard teachers tried. Miss that early window and the door doesn't fully reopen, even for a smart, hardworking brain.

• Genetics & DNA Science

  Really bad stress in early childhood can leave chemical 'sticky notes' on your genes, tags that don't change the DNA itself but change which genes get switched on. Years later those notes can raise the odds of heart disease or depression. It's trauma from age five, quietly written under the skin and read out decades on.

• Economic Development Economics

  An economist named Heckman found that a dollar spent helping a poor three-year-old pays back way more than the same dollar spent on a teenager or adult. Little kids' brains are still being built, so early help compounds for life. Weirdly, the smartest money move for a whole country is investing in toddlers.

• Landmark Constitutional Cases Law

  In a famous US case ending school segregation, judges leaned on a psychology test where Black children picked white dolls as 'nicer'. It showed segregation hurt how the kids saw themselves. A landmark law decision rested on child-development science, not just legal rules.