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Lecture 13

Psychology 1000 Lecture Notes - Lecture 13: Imipramine, Imaginary Audience, Neural Development


Department
Psychology
Course Code
PSYCH 1000
Professor
Laura Fazakas- De Hoog
Lecture
13

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Practice Exam Questions
Q: Which of the following is similar to both Anorexia and Bulimia?
a. Lack of a stable sense of self
b. High perfectionism
c. High need for control
d. Self esteem highly impacted by body image
e. Both B & D above
Q: According to Maslow’s Humanistic theory, which of the following is/ are true?
a. love and belongingness are basic needs
b. human behaviour is motivated primarily by drives and maintaining a homeostasis
c. self-actualization is the ultimate human goal
d. human behaviour is motivated primarily by the consequences of the behaviour
e. both A) and C)
Developmental Psychology
Study of physical, cognitive & social/emotional changes throughout the lifespan
From birth to death
Research Methods
Longitudinal
same individuals are studied over long periods of time
problems:
subject, attrition, practice effects
Cross-sectional
people of different ages are studied at the same time
problems:
cohort effects: differences due to different life experiences
Longitudinal Sequential
persons of different ages are studied over long periods of time

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Physical Development
Conception
Ovulation
mature egg released & picked up by fallopian tubes
300 million sperm in ejaculate (~ 2000 reach egg)
Conception has occurred when one sperm penetrates egg
Sex Determination
Dependent on the X and or Y chromosome present in sperm
XX ————> female
XY —-——> male
Y chromosome has TDF gene
testes develop by 6-8 weeks after conception
testes then secret androgen
Prenatal Development
ZYGOTE (fertilized egg) travels down the fallopian tube to uterus
about 36 hours after fertilization the egg beings to divide
about 5-7 days after conception ZYGOTE implants in lining of uterus
up to this point is the germinal stage

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Embryonic Period (0-8 weeks)
Major organ systems formed endoderm differentiates into the digestive system
mesoderm into skeleton, muscles, reproductive & circulatory systems
ectoderm into the nervous system and skin
Another group of cells, the TROPHOBLAST develops into the placenta
Placenta
nourishes the fetus and acts as a site for exchange of substances between the mothers blood and the fetus’s blood
provide oxygen and nutrients
Umbilical Cord
develops in 5th week
End of the First Trimester
external body parts and internal organs have been formed
fetus is about 4 inches
weighs about 3/4 oz
looks like a small infant
Now development will consist mainly of enlargement and differentiation of structures that are already present
Second Trimester
3-6 months
14th week
fetal movements felt
“quickening"
18th week
fetal heartbeat can be detected
20th week
opens eyes
24th week
sensitive to light and sound
vigorous arm and leg movements
Third Trimester
6-9 months
skin loses downy hair, wrinkly appearance
moves into birth position with head down
last 2 months rapid weight gain
average newborn
7.5 lbs & about 20 in. long
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