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TTU - PSY 2301 - Class Notes - Week 3

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TTU - PSY 2301 - Class Notes - Week 3

School: Texas Tech University
Department: Psychology
Course: Child Psychology
Professor: Jessica Hoffman
Term: Fall 2016
Tags: child psychology
Name: PSY 2301 - Week 3 Notes
Description: Chapters 3 - 4
Uploaded: 09/19/2016
This preview shows pages 1 - 3 of a 15 page document. to view the rest of the content
background image PSY 2301 – Child Psychology 09/12/2016 Gene Environment Interaction Epigenetic o Continual bidirectional exchanges between one’s genotype  and one’s environmental conditions Affects how an individual acts in their environment and 
why they choose the environment that they’re in
Nature vs Nurture Twin Studies o Used to determine the genetic basis for a given trait
o Overall, MZ twins show more similarities than DZ twins
o MZ twins reared apart
Adoption Studies o Examine similarities and differences between the child and  adoptive/biological parents Some traits are seen as child being more like biological 
parent even though they’ve never met them before
Conception Conception o Union of a sperm and an ovum Ova o Each month an egg is released and is ready to be fertilized by  a sperm cell Sperm o Several million sperm are ejaculated but only 1/1000 will  reach the ovum Spontaneous abortion (miscarriage) o About 50% Infertility and ART Causes of infertility among men o Low sperm count
o Deformed sperm
background image Could be due to infection or age o Poor ability of the sperm to swim to the ovum (motility issues)
o Infectious diseases
o Chronic diseases
o Injury of the testes
o Autoimmune responses
Causes of infertility among women o Irregular ovulation Difficulty when the egg is being released o Declining levels of estrogen and progesterone that occur with  aging and may prevent ovum from becoming fertilized or from
remaining implanted in the uterus
o Inflammation of the tissue sloughed off during menstruation  (endometriosis) o Obstructions or malfunctions of the reproductive tract, often  caused by infection or disease Pelvic inflammatory disease caused by untreated STD’s Assisted Reproductive Technology (ART) o Artificial (intrauterine) insemination Can be done with donor sperm o In Vitro Fertilization (IVF) Test tube babies Fertilization takes place outside of womb Egg gets implanted in uterus with hope of successful 
pregnancy
o Donor IVF Egg or sperm or both can be donated Embryonic transplant o Surrogate Legal complications With or without donor egg
background image If issue with uterus (scar tissue) Or no egg production  o Adoption Not ART Just another way for a family to have kids The younger that you adopt, the better the attachment 
relationships with the child
Ch. 3 Prenatal Development
Prenatal growth
3 period of prenatal growth  o germinal (weeks 1-2)
o embryonic (weeks 3-8)
o fetal (weeks 9-38)
Germinal o 1-2 weeks after conception
o time between implantation and conception
o sex is determined but can’t be identified by dr yet
o blastocyst
zygote has the form of a sphere of cells surrounding a 
cavity of fluid
o embryonic disk inner part of the blastocyst that differentiates into the 
endoderm, mesoderm, and ectoderm of embryo
o trophoblast outer part of the blastocyst from which the amniotic 
sac, placenta, and umbilical cord develop
o placenta organ connected to the uterine wall which serves as a 
relay station between mother and fetus for the 
exchange of nutrients and waste
o umbilical cord tube that connects the fetus to the flacenta

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School: Texas Tech University
Department: Psychology
Course: Child Psychology
Professor: Jessica Hoffman
Term: Fall 2016
Tags: child psychology
Name: PSY 2301 - Week 3 Notes
Description: Chapters 3 - 4
Uploaded: 09/19/2016
15 Pages 12 Views 9 Unlocks
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  • Notes, Study Guides, Flashcards + More!
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