1 DEVELOPMENTAL PSYCHOLOGY - TEXTBOOK Flashcards
What is developmental psychology?
Study of continuity and change across the human life span
What is the nature vs nurture debate?
Naïve distinction about whether development is determined by genetics or environment
Why is the nature vs nurture debate naïve?
Genes that influence development also depend on the environment to determine how they are expressed
What is canalization?
The idea of development as constrained epigenesis
What is Waddington’s epigenetic landscape?
A metaphor for the concept of development as the interaction between genes and environment
What is the epigenetic landscape made up of?
Valleys and troughs at different depths
What happens as the ball rolls down the epigenetic landscape?
Some parts of its journey are well specifed/highly probable due to deep canalization and other paths are less predictable because path is less specified
What is infancy?
The period from birth up to second year of life
When is childhood?
Begins at around 18-24 months and continues until late adolescence
When is adolescence?
Begins with the onset of sexual maturity (around 11-14) and continues until the beginning of adulthood (18-21)
When is the prenatal stage?
Begins with conception, ends with birth
What is a zygote?
A single cell that contains chromosomes from both a sperm and an egg
How many chromosomes do sex cells contain?
23
When is the germinal stage?
Two week period that begins at conception
What happens during the germinal stage?
Zygote begins to divide, migrates down fallopian tube and implants itself in uterus wall
When is the embryonic stage?
Weeks 2-8
What is a blastocyst?
Cluster of embryonic cells
What is an embryonic disk?
Three-layered flattened structure that emerges from blastocyst
What are the three layers of the embryonic disk?
Endoderm, mesoderm and ectoderm
What is the endoderm?
Layer that goes on to form internal organs
What is mesoderm?
Layer that goes on to form skeletal muscles
What is the ectoderm?
Layer that goes on to form skin and nervous system
When is the fetal stage?
Week 9 until birth
When is the embryo known as a fetus?
During fetal stage