Chapter 9 Discovering Psychology Notes Flashcards
- Unique combination of genes inherited from biological mother and father
- The historical era during which you grew up
- Cultural contexts
- Social contexts
- Family contexts within which you were raised
Influencing Factors Beyond Our Control Influencing Life Stories
The study of how people change psysiologically, cognitively, and socially throughout the lifespan.
Developmental Psychology
- Biological
- Environmental
- Social
- Cultural
- Behavioral
Factors Developmental Psychologists Investigate at Every Stage and Age of Life
- Attitudes
- Perceptions
- Personality Characteristics
Influence the Impact of Developmental Factors
- Longitudinal Design
- Cross-Sectional Design
Research Methods for How People Develop
Tracks a particular variable or group of variables in the same group of participants over time, sometimes for years.
Longitudinal Design
Studies a variable or group of variables among a group of participants at different ages or developmental stages.
Cross-Sectional Design
Traditionally defined by age, which implies that we experience relatively sudden, age-related changes as we move from one stage to the next.
- Most of our physical, cognitive and social changes occur gradually
- Can be abrupt
- Can be closely tied to critical periods
Stages of Lifespan
Periods during which a child is maximally sensitive to environmental influences.
Critical Periods
Although we are born with a specific genetic potential that we inherit from our biological parents, our environment influences how, when, and whether that potential is expressed. Our genetic inheritance influences the ways in which we experience and interact with the environment.
Interaction Between Herediy and Environment (Nature-Nurture)
- Zygote
- Chromosomes
- Deoxyribonucleic acid (DNA)
- Genes
- Genotype
- Phenotype
- Epigenetics
Genetic Contributions to Development
A single cell packed with genetic instructions that you inherited from your biological parents.
Zygote
Found in the cell nucleus, contains the genetic data inherited from biological parents. Each of these is a long, thread-like stucture composed of twisted parallel strands of deoxyribonucleic acid (DNA).
Chromosomes
Stores the inherited information that guides the development of all living organisms.
Deoxyribonucleic Acid (DNA)
DNA segments stung up like beads along the length of a chromosome. A unit of DNA code for making a particular protein molecule.
- Make up less than 2% of human DNA
- Direct the manufacture of proteins
- Don’t directly control development, traits, or behaviors
Genes
The genetic makeup of an individual organism.
- Every cell of your body contains a complete copy of this (excluding reprodiction cells)
- Represented by each set of 23 chromosome pairs
- contains only about 20,000 to 25,000 protein-coding genes
- Used to commonly be described as a “genetic blueprint” (not accurate)
- alleles
Genotype
Different versions of genes.
- i.e.- freckles is a result of dominant genes vs. recessive genes
- Most characteristics are a result of multiple genes
Alleles
The observable traits or characteristics of an organism as determined by the interaction of genetics and environmental factors.
- Environmental factors influence these- i.e.- freckles may be inherited but require sun to actually be seen.
- Different genotypes react differently to environmental factors- i.e.- some people are more sensitive to UV rays and sunburn easily
Phenotype
The study of the cellular mechanisms that control gene expression and of the ways that gene espression impacts health and behavior.
- Dramatic differences among size, shape, and function of cells are due to which genes are expressed or activated to participate in protein production.
- Gene expression can be triggered by the activity of other genes, internal chemical changes, or by external environmental factors
- Genes can mutate from one generation to the next
Epigenetics
Conception to birth
Prenatal Stage
Birth to 2 years
Infancy to toddlerhood
2 to 6 years
Early childhood
6 to 12 years
Middle Childhood
12 to 18 years
Adolescence