Developmental/Lifespan Flashcards
What are the 2 types of developmental change?
Qualitative Change-Development occurs in distinct Stages
Quantitative Change-Development is continuous; occurs gradually over time
What are the 4 factors that influence development?
Genetic Factors
Environmental Factors
Normative Factors
Non-Normative Factors
What are the environmental factors that influence development?
(Mneumonic: (Many Monkeys Eat Macaroni Chronically)
Microsystems-Direct interaction (parents/teachers)
Mesosystems-Bidirectional/links btwn microsystems (home/school/work/friends)
Exosystems-2 or more settings; 1 does not include the person (parent’s job)
Macrosystems-Influence of culture/religion/SES
Chronosystems-Passage of time; changes that occur in one’s life (family, school, economy, war)
Who are the qualitative theorists?
Piaget/Kohlberg/Erickson
Who are the quantitative theorists
Robbie Case
Who was the theorist who proposed an ecological approach to development that includes 5 levels of environmental influence?
Urie Bronfenbrenner
What is a microsystem?
The first level of environmental influence that involves direct, daily contact with the individual (home/school/work neighborhood)
What is a mesosystem?
The various links between microsystems (e.g. Parents participate in Parent-Teacher night)
What is an exosystem?
The relationship between 2 or more settings in which at least 1 of them DOES NOT include the person. (e.g. The parents job INDIRECTLY impacts the child through parental stress, absence, etc…)
What is a macrosystem?
Includes the influence of culture, SES, Religion, Economy & Political System
What is a chronosystem?
The events resulting from the passage of time (e.g. economic growth, war, birth of siblings, moving to a new neighborhood)
Name 2 other determinants of overall development
Normative & Non-normative
What is a normative influence of development?
The events that occur in a similar way for most people
1. “age-graded”
2. “history graded”
What is a non-normative influence of development
Unusual events that have a major impact on and individual’s life (e.g. birth defect, death of a parent, natural catastrophe)
What are age-graded normative events?
Events that are commonly experienced by people of a particular group (kindergarten, prom, menopause, retirement)
What are history-graded normative events?
An event that is common to a particular cohort (e.g. the Great Depression, Viet Nam War, the impact of television or the internet)
What is a critical period of development?
A critical period is a specific time in an organism’s life when a particular phenomenon MUST occur or it will never happen. (e.g. teratogenic stage of organ development)
What is a sensitive period of development?
A sensitive period is a stage in which stimulation and learning has MORE of an impact than any other times, BUT, development CAN still occur later on (e.g. language & human attachment)
How many chromosomes do human cells carry?
46 chromosomes; 23 pairs per parent.
What can be found on chromosomes?
Thousands of genes, which composed of DNA & RNA
What is the purpose of genes
To transmit hereditary traits
What are autosomes?
Chromosomes that are not involves in sexual expression
What is unique about the 23rd chromosome?
Sex-determining; 1 chromosome from mother (X); 1 chromosome from father (X) or (Y).
What is the genetic combination that results in a Male? A Female?
Male=XY; Female=XX
What is the difference between genotype and phenotype?
Genotype is the random and unique collection of genetic material (both expressed and unexpressed)
Phenotype the the manifestation of that unique combination (e.g. brown skin, green eyes, hair color, height, etc…)
What percentage of American babies are born with disabilities?`
6%
What genetic abnormalities are due to autosomal defects?
Phenylketonuria (PKU)-Phenylalanine sensitive resulting in severe retardation if exposed; Phenaylalanine-free diet
Sickle-Cell Anemia (Autosomal Recessive), deformed red, blood cells sickle causing extreme physical pain
Mental Retardation-3 chromosomes on #21, broad skull, slanted eyes, physical deformities, low I.Q.
What are the characteristics of Klinefelter’s Disease?
XXY-Men are taller, lower I.Q. partial breasts, small testicles, high-pitched voice, unable to have children
What are the characteristics of Turner’s Syndrome?
XO-Women do not ovulate or menstruate, normal intelligence, but abnormal development of secondary sex characteristics.
What are the characteristics of Hemophilia?`
Causes excessive bleeding; inhibits clotting, found predominantly in males and requires transfusions
What are the characteristics of Sickle-Cell Anemia
Deformed red, blood cells that cause extreme pain, impacts mostly African-Americans (1 in 500), Autosomal Recessive)
What genetic abnormalities are caused by sex-linked recessive disorders?
Klinefelter’s Syndrome (XXY)
Turner’s Syndrome (X0)
Hemophilia (Recessive D.O.)
Name the 3 stages of prenatal development
The Germinal (Conception-2 weeks)
Embryonic & (2-12 weeks)
Fetal Periods (12 weeks-
Birth)
What development occurs during the Germinal Period?
The zygote rapidly divides and and implant itself into the uterus wall.
(aka Conception & Implantation)
What development occurs during the Embryonic Period
The development of major organ systems/structures
It is the teratogenic stage
What development occurs during the Fetal Period
Increase in growth, complexity of organs (e.g. nails/lashes), cephalocaudal growth
What are some of the maternal factors that impact pre-natal development?
Nutrition
Alcohol Consumption (FAS)
Cocaine
Nicotine
What impact does alcohol consumption have on fetal development?
Fetal Alcohol Syndome-Delayed growth, physical deformities, delayed motor development, decreased intelligence, learning disabilities
What impact does poor nutrition have on fetal development?
Inhibits physical growth and brain development
What impact does cocaine have on fetal development?
Spontaneous abortion, small head, lack of alertness, poor organization, language skills, emotional attachment.
What impact does nicotine consumption have on fetal development?
Infant death, low birth weight, poor attention span, hyperactivity, lower I.Q, and perceptual-motor problems.
What is sexual dimorphism?
The systematic differences between individuals of different sex in the same species
It’s impacted by biology AND environment
Give and example of sexual dimorphism in humans.
Women have a denser Corpus Collosum thus allowing them to process emotions quicker than men,
What are the 5 reflexes that develop during infancy?
The Moro Reflex-Extends head, legs, arms, arches back when startled
The Babinski Reflex-Spreading toes when foot is stroked
The Rooting Reflex-searches for nipple and sucks when cheek is stroked
The Grasping Reflex-fist around object placed in hand
The Sucking Reflex-when lips are stroked
What perceptions do infants have?
Touch (the first to develop) pain, taste (prefer sweet over bitter/sour), hearing (prefer female voices), smell is well developed at birth. Infants prefer the smell of mother’s milk over a strangers.
What is vision like at birth?`
Vision is poor at birth, infants are attracted to faces and intricate, black & white patterns.
Say more about vision at birth.
At 1 month old, infant prefers mother’s face
2 months, baby smiles when mask is presented
2-3 mos. Cross-modal fluency; the ability to imitate facial expressions
Binocular vision occurs at 4-5 months old
20/20 vision at 6 mos.-2 years
List milestones in motor development
6 weeks-Baby lifts head
4 mos.-Rolls over
7 mos.-Sits alone
9 mos. Crawling/Stands w/support
12 mos.-Stands alone
12-15 mos.-1st steps/walks alone
16 mos.-Walks up stairs
24 mos.-Toilet Training
What are the 5 stages of brain development?
Proliferation
Migration
Differentiation
Myelination
Synaptogenesis