Developmental Psychology Flashcards
British empiricist school of thought
Believe that all knowledge is gained through experience. Child development is completely reliant on experiences with the environment
Philosophers who formed the British empiricist school of thought
John Locke, Thomas Hobbes, George Berkeley, David Hume, James mill, and John Stuart Mill
Tabula Rasa
Blank slate. Refers to a child’s mind at birth
Jean-Jacques Roussesu
Wrote a book called “Emile: Concerning Education”. Believed the opposite of tabula rasa. Society is not only unnecessary, but detrimental to optimal development.
Charles Darwin
Kept a baby biography. Evolutionary theory stressed the importance of studying the mind as it functioned to help the individual adapt to the environment. A central characteristic of the functionalist system of thought. Darwin’s theory also caused researchers to become interested in the individual differences in development
G. Stanley Hall
Father of developmental psychology. Lived from 1846-1924, first to do empirical research on children. One of the founders of the APA.
John Watson (1878-1958)
A behaviorist who influenced Dev psych. Criticized psych as being “too focused on mentalist topics”. Believed in environmental influences & tabula rasa. Told parents to provide the right learning experiences and not to show too much overt affection. Believed goal of psych was to predict behavior based on a given stimulus.
Arnold Gesell
A nativist that believed that development occurred as a maturational (or biological) process, regardless of training. Opposed learning and behavior theorists. Believed development was biol based & dev blueprint existed from birth.
Psychodynamic Orientation
Sigmund Freud (1856-1939). A system of thought that arouse out of a clinical setting. Stresses the role of subconscious conflicts in devel of functioning & personality.
Cognitive structuralists
Jean Piaget (1896-1980). In opposition to the behaviorists. Saw children as more actively involved in their devel- constructing knowledge through their experiences w their environment
Cross-sectional studies
Compare groups of subjects at different ages
Longitudinal studies
Compare a specific group of people over an extended period of time
Sequential cohort studies
Combine cross-sectional and longitudinal research methods. Several groups of different ages are studied over several years
Nature
Human capabilities are present at birth and individual differences are largely an effect of genetic makeup
Nurture
Human capabilities are determined by the environment and shaped by experience. Nature vs. nurture debate has effectively disappeared in the past 30 yrs
Gregor Mendel
Observed the inheritance of traits in pea plants & hypothesized the existence of the basic unit of heredity, the gene. Each trait was controlled by an alternative form of a gene, an allele, & each variation was represented by an allele that was either dominant or recessive. For any given gene there are 2 alleles.
Genotype
The total genetic complement (genetic makeup) of an individual. Identical genotypes can produce different phenotype a depending on environments. I.e plants growing at diff altitudes
Phenotype
The total collection of expressed traits that is the individuals observable characteristics. Individuals with the same phenotype can have diff genotypes
Chromosomes
Where genes are located. Where we find the genetic info of the indiv. The 23rd pair determines the sex of the child. The nucleus of each cell in the human body, except for sperm & egg cells, hold 23 pairs of chromosomes (46 in all).
Diploid
Chromosomes exist in pairs (split for reproduction)
Haploid
Only 1. I.e the gametes (sperm & egg cells) when join during conception come together to form the 23rd chromosome
Sexual reproduction
The offspring receives genes from both parents, making the genetic variability far greater than in asexual reproduction
Genes in common
It can be assumed that children have 50% of their genes in common w parents; siblings & fraternal twins also have 50% in common; identical twins have 100% in common
R.C. Tyron’s studies
(1942). On inheritance of maze running ability in laboratory rats. Shows even very specific behaviors have a genetic basis. Bred “maze bright” and “maze dull” rats over several generations to show learning ability had a genetic basis.
Family studies
Researchers often compare rates of similarity of a characteristic among family members vs. unrelated individuals. I.e children of schizophrenics are 13x more likely to have schiz than gen population. For siblings 9x. Downfall, is your cannot separate shares environment from genetic factors
Twin studies
Compares MZ & DZ twins are better able to distinguish the relative effects of shared environ & genetics b/c they are assumed to share the environ equally. Some ppl disagree & say ppl treat MZ twins more similarity so shared environ may not be equal.
Twins raised apart
Compared personality characteristics:
- MZ raised together most similar
- Then MZ raised apart
- Followed by DZ twins raised together
- DZ raised apart least similar
Adoption studies
Studied IQ & showed adopted children’s IQ is more similar to their biological parents than their adoptive parents. Criminal behavior among boys shares a similar pattern
Lewis Terman
Compared kids w IQ above 135 w kids in general pop. First study to focus on “gifted children” and it was a large scale longitudinal study that followed the devel of group over time
Down’s syndrome
Extra 21st chromosome. Age of parents is a risk factor for having a child w Downs (older moms and/or Dads more susceptible)
Phenylketonuria (PKU)
A degenerative disease of the nervous system. Results when the enzyme needed to digest phenylalanine, an amino found in milk & other foods, is lacking. Today infants can be tested & the severe effects of the disease can be avoided w a strict diet. 1st genetic disease that could be tested in large pops
Klinefelter’s syndrome
In males, possession of an xtra X chromosome (XXY). They are sterile & often have mental retardation
Turner’s syndrome
Females w only 1 X chromosome. Results in a failure to develop secondary sex characteristics, short fingers & an unusually shaped mouth
Conception
Takes place in the Fallopian tubes where the ovum or egg cell is fertilized by the male sperm cell
Zygote or fertilized egg
The sperm cell fertilizes the egg cell & forms a single cell
Germinal period
The fertilized egg travels down the Fallopian tube and is implanted into the uterine wall
Embryonic period
The 8 weeks following the germinal period; embryo increases in size by 2 million percent
Fetal period
Begins in the 3rd month with measurable electrical activity in the fetus’s brain
External threats to prenatal devel
Infants whose mothers contract rubella b4 end of 2nd month run a high risk of cataracts, deafness, heart defects, & mental retardation. Other viral infections, flu, measles, herpes, etc have been linked to various birth defects
Thalidomide
A tranquilizer that was often prescribed to women in England in the 1950s. Produced birth defects such as missing and malformed limbs & defects of the heart, eyes, digestive tract, ears & kidneys