LSD: Part 1 Flashcards
Cross-Sectional, Longitudal, and Cross-Sequential
Research Designs
Several different age groups are studied at one specific time.
Cross-Sectional Designs
Longitudal Design
One group of people studied at different times as the group ages.
Participants studied first cross-sectionally and then longitudnally
Cross-Sequential Design
Nature and Nurture both affect…
…personality, physical growth, intellectual growth, and social interactions.
All people are a result of both of these
Nature and Nurture
Nature
Influence of biological and inherited characteristics on personality, physical growth, intellectual growth, and social interactions.
Influence of environments on personality, physical growth, intellectual growth, and social interactions
Nurture
DNA
Molecules containing Genetic Material of an organism
Section of DNA having same arrangement of chemical elements
Genes
Genes determine…
…traits
Dominant Genes
Actively control expression of trait.
Must be paired with a recessive gene in order to be expressed.
Recessive Genes
Chromosome
Tightly wound strand of DNA
Each of these is made up of several genes
Chromosome
Humans have 46 of these, they get half from the egg and half from the sperm
Chromosome
22 pairs of chromosomes that determine human characteristics
Autosomes
Sex Chromosomes
23rd pair of chromosomes that determine sex.
XX
Femal
XY
Male
Ovum and Sperm unite
Fertilization
Ovum
Female sex cell/egg
Male sex cell
Sperm
Result of Fertilization
Zygote
Mytosis
Zygote divides until mass of cell becomes a fetus.
One egg
Monozygotic
Dizygotic
Two eggs
Germinal Period, Embryonic Period, Critical Period
3 Periods of Pregnancy
Germinal Period
Germinal Period First two weeks after fertilization
Zygote moves to uterus and implants in uterine lining
Germinal Period
Organ that contains and protects developing organism
Uterus
Formation of placenta and umbillical cord
Germinal Period
Embryonic Period
2-8 weeks after fertilization
Major organs and structures develop
Embryonic Period
Developing organism from 2-8 weeks after fertilization
Embryo
Times during which some environmental influences can have the greatest impacts on development
Critical Period
Teratogens
Factors that can cause birth defects
Fetal Period
8 weeks - birth