Developmental Psychology
Zygote: The fertilized egg that is the initial stage of human development.
Embryo: The stage of development from implantation until about 8 weeks of pregnancy.
Fetus: The stage of development from 8 weeks until birth.
Teratogens: Agents that can cause malformations or harm during prenatal development (e.g., drugs, alcohol).
Fetal Alcohol Syndrome (FAS): A condition in a child resulting from alcohol exposure during the mother's pregnancy, leading to physical, behavioral, and learning problems.
Cognitive Development
Habituation: Decreased response to a stimulus after repeated presentations.
Maturation: The biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.
Cognition: The mental activities associated with thinking, knowing, remembering, and communicating.
Schema: A framework or concept that helps organize and interpret information.
Assimilation: The process of incorporating new experiences into existing schemas.
Accommodation: The process of adjusting schemas to fit new experiences.
Stages of Cognitive Development (Jean Piaget)
Sensorimotor Stage: Birth to about 2 years; experiencing the world through senses and actions.
Object Permanence: Understanding that objects continue to exist even when they cannot be seen.
Preoperational Stage: Ages 2 to 7; representing things with words and images but lacking logical reasoning.
Egocentrism: Inability to see the world from others' perspectives.
Conservation: Understanding that quantity remains the same despite changes in shape.
Concrete Operational Stage: Ages 7 to 11; thinking logically about concrete events and grasping concrete analogies.
Formal Operational Stage: Ages 12 and up; abstract reasoning and formal logic.
Scaffold: Support offered to a learner that is gradually removed as they become more competent.
Social and Emotional Development
Autism Spectrum Disorder (ASD): A developmental disorder affecting communication and behavior.
Stranger Anxiety: The fear of strangers typically displayed by infants around 8 months old.
Attachment: An emotional bond that forms between people, often studied in the context of parent-child relationships.
Secure Attachment: A strong, positive bond characterized by comfort and security.
Insecure Attachment: A bond marked by anxiety or avoidance.
Temperament: An individual's characteristic emotional reactivity and intensity.
Basic Trust: A concept from Erik Erikson referring to the sense that the world is predictable and trustworthy, established in infancy.
Self-Concept: The understanding and perception one has of oneself.
Gender and Identity
Sex: The biological differences between male and female.
Gender: The roles, behaviors, and expectations society assigns to individuals based on their sex.
Aggression: Behavior intended to harm another person.
Relational Aggression: Harm done through manipulating relationships.
Role: A set of expectations regarding how to behave in a particular social position.
Gender Role: The expectations about how males and females should think and act.
Gender Identity: One's personal sense of their gender, which may not necessarily match the sex assigned at birth.
Social Learning Theory: Suggests that gender roles are learned through social interaction, observations, and reinforcement.
Gender Typing: The process by which children learn the behaviors and attitudes deemed appropriate for their gender.
Androgyny: A combination of masculine and feminine characteristics in an individual.
Transgender: A term for individuals whose gender identity differs from the sex they were assigned at birth.
Adolescence and Adulthood
Adolescence: The developmental transition from childhood to adulthood.
Puberty: The period of sexual maturation during which an individual becomes capable of reproduction.
Identity: The sense of self consisting of personal and social identities.
Social Identity: A person’s sense of who they are based on their group membership(s).
Intimacy: The ability to form close, loving relationships, a key task in early adulthood.
Emerging Adulthood: A developmental stage typically ranging from ages 18 to 25 where individuals explore various life options.
Biological Factors in Development
X Chromosome: One of the two sex chromosomes in humans, females have two X chromosomes (XX).
Y Chromosome: The sex chromosome found in males (XY).
Testosterone: The primary male sex hormone, contributing to the development of male physical characteristics.
Primary Sex Characteristics: Physical features directly involved in reproduction.
Secondary Sex Characteristics: Features that appear during puberty, such as breast development in females and facial hair in males.
Spermarche: The onset of sperm production in males.
Menarche: The first menstrual cycle in females.
Intersex: A condition where an individual is born with reproductive or sexual anatomy that doesn’t fit typical definitions of male or female.
AIDS: Acquired immune deficiency syndrome, a viral infection that destroys the body's immune system.
Sexual Orientation: An enduring pattern of emotional, romantic, or sexual attractions to people of the same or different genders.
Menopause: The time in a woman's life when menstrual cycles permanently cease.
Research Methods
Cross-Sectional Study: Research that compares different groups at one point in time.
Longitudinal Study: Research that follows the same group over time to observe changes.
Neurocognitive Disorders (NCDs)
Alzheimer’s Disease: A progressive neurodegenerative disease that causes memory loss and cognitive decline.
Social Development
Social Clock: The culturally preferred timing of social events such as marriage and parenthood.
Key Contributors to Remember
Sigmund Freud
Jean Piaget
Lev Vygotsky
Harry Harlow
Margaret Harlow
Konrad Lorenz
Mary Ainsworth
Erik Erikson
Diana Baumrind
Carol Gilligan
Albert Bandura
Lawrence Kohlberg