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)

  1. 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.

  2. 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.

  3. Concrete Operational Stage: Ages 7 to 11; thinking logically about concrete events and grasping concrete analogies.

  4. 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