Lifespan Flashcards
critical period
a limited period of time when exposure to certain environmental events is
necessary for development to occur
sensitive period
usually longer than a critical period; a period of time when it’s optimal (but not necessary) for certain environmental events to occur
which ecological system consists of elements in the environment that affect the child’s immediate environment and include the parents’ places of work, the extended family, and community health services
Exosystem
which ecological system is comprised of the social and cultural environment. It consists of cultural practices, economic conditions, and political ideologies
Macrosystem
What does the chronosystem consist of?
environmental events that occur over a person’s lifespan and impact the person’s development and circumstances
passive genotype environment correlation
occurs when children inherit genes from their parents that predispose them to have certain characteristics and are exposed
to environments by their parents that support the development of those characteristics
Evocative genotype-environment correlation
occurs when a child’s genetic make-up evokes certain kinds of reactions from parents and other people that reinforce the child’s genetic make-up
Active genotype-environment correlation
also referred to as niche-picking and occurs when children actively seek experiences that “fit” their genetic predispositions
Canalization
the tendency for genetic make-up to restrict developmental outcomes regardless of environmental circumstances
Dynamic Systems theory (DST)
regards both nature and nurture to be essential for development as well as how we control ourselves and interact with others, and how we think about, or represent, our experiences in our minds
Epigenetics
when environmental factors modify gene expression and influence phenotype without altering DNA
(diet, exercise, environmental pollutants, child abuse)
Prader-willi syndrome
- most often caused by a deletion on the paternal chromosome 15
- narrow forehead, almond-shaped eyes, short stature, and small hands and feet; hypotonia (poor muscle tone); global developmental delays; hyperphagia (chronic overeating) and obesity; hypogonadism; intellectual disabilities; and skin-picking and other self-injurious behaviors.
Angelman syndrome
usually due to a deletion on the maternal chromosome 15.
-microcephaly (small head and brain), a wide jaw and pointed chin, severe developmental delays, communication and intellectual disabilities, hyperactivity, a tendency to be unnaturally happy, ataxia, seizures, and hand-flapping.
Cri-du-chat syndrome
caused by a deletion on chromosome 5. Its symptoms range from mild to severe depending on the extent and location of the deletion and include a high-pitched (cat-like) cry, intellectual disability, developmental delays, microcephaly, low birth weight, weak muscle tone, and characteristic facial features (e.g., widely set eyes, low-set ears, round face).
Klinefelter syndrome
affects males and is due to the presence of two or more X chromosomes in addition to a single Y chromosome.
- incomplete development of secondary sex characteristics, gynecomastia (breast enlargement), and a low testosterone level
- disproportionately long arms and legs and are taller than normal and may have delays in language development, learning disabilities, and impaired problem-solving and social skills.
Turner Syndrome
affects females and occurs when all or part of an X chromosome is missing.
- don’t develop secondary sex characteristics, are infertile, short stature, stubby fingers, drooping eyelids, a receding or small lower jaw, and a web-like neck.
- may have learning disabilities, vision and hearing problems, skeletal abnormalities, heart defects, and kidney and urinary tract abnormalities.
Down syndrome (3 types)
1) Trisomy 21 (95% of cases) -extra 21 chromosome in all cells
2) Mosaic trisomy 21 (1% of all cases) - only some cells contain and extra 21 chromosome
3) translocation trisomy 21 (4% of all cases) - some cells have full or partial chromosome 21
when can teratogens be most harmful for a fetus?
from the 3rd to 8th week after conception
Which type of Down Syndrome can be due to an error during cell division or heredity?
translocation trisomy 21
by about ____or ____ months of age, infant’s visual acuity is similar to that of normal adults.
7 or 8
Depth perception relies on three types of depth information (include ages infants start using these)
- kinetic (motion) (3-4 weeks)
- binocular (stereoscopic) (2-3 months)
- pictorial (static-monocular) (5-6 months)
presbyopia
By about 40 years of age
-a hardening of the lens of the eye, which makes it difficult to focus on nearby objects
infants have auditory (sound) localization, but this ability decreases when infants are between_______ months of age. It then re-emerges and becomes more deliberate and precise and improves to nearly adult levels by about ____ months of age
two and four; 12
presbycusis
decreased sensitivity to high-frequency sounds (with declining age)
Factors that increase the risk for SIDS include:
male gender, African American or Native American race, 6 months of age or younger (peak age 2 to 4 months), premature birth, low birth weight, poor prenatal care, maternal use of alcohol or drugs during pregnancy, pre- and postnatal exposure to cigarette smoke, and unsafe sleep practices (bed-sharing, soft or loose bedding, sleeping on stomach).
Factors that reduce the risk for SIDS include:
having the baby sleep on his/her back, breast feeding the baby, keeping the crib as bare as possible, avoiding overheating the baby, sharing a room (but not a bed) with the baby, and offering the baby a pacifier without a strap or string at nap times and bedtime.
at what age can kids start walking backwards, run, and throw a ball while standing
16-18 months
Volitional (versus reflexive) auditory localization emerges after _________ of age and then improves to nearly adult levels by about 12 months of age
4 months
language acquisition device (LAD)
an inborn linguistic processor that enables children to understand language and speak in rule-governed ways
Social interactionist theory
language acquisition depends on a combination of biological and social factors
parentese
involves speaking slowly and in a high-pitched voice, using a restricted vocabulary and simple repetitive sentences, placing exaggerated emphasis on key words, and focusing on present events
Pragmatics
refers to how language is used in a social context to communicate effectively with others
cooing begins at _____ and involves:
6-8 weeks; repeating vowel-like sounds
babbling begins at _____ months and involves:
3-6 months; utterance of single consonant- vowel combinations such as “ba” and “goo.”
Echolaliabegins at about ____ months of age and involves:
9; repeating speech sounds and words uttered by another person without understanding their meaning
children can understand words by about _____ months of age, but don’t say their first words till about ______
8 or 9; 10-15 months
Children begin to useholophrastic speechbetween ___ and ___ months of age.
- It involves:
12 and 15;
-using a single word to express an entire thought, with the meaning of the word depending on the context and the child’s tone of voice.
Children begin to usetelegraphic speechbetween ___ and ____ months of age.
- It consists of:
18 and 24
-two content words (nouns, verbs, and adjectives) and omits articles, conjunctions, and other function words.
Ex. “Want juice,” “doggie gone,” “good boy”
Overregularization
when a child misapplies rules for plurals and past tense.
Ex. a child might say “foots” instead of “feet” and “telled” instead of “told.”
Language brokering
the act of translating and interpreting within immigrant families by children and adolescents for their parents, other family members, and other adults
Instead of “I went there,” 30-month-old Mandy says, “I goed there.” This is an example of:
overregularization
Piaget’s constructivist theory
assumes that cognitive development relies on a combination of biological maturation and experience and describes it as an active process in which a child constructs knowledge by interacting with the environment
(Piaget’s constructivist theory):
When disequilibrium occurs, a child is motivated to restore equilibrium through adaptation, which consists of two processes:
1) assimilation: attempts to understand a new object or situation using an existing cognitive schema
2) accomodation: modifies an existing cognitive schema or creates a new schema to fit the new object or situation.
Piaget’s 4 stages of cognitive development
- Sensorimotor
- Preoperational
- Concrete operational
- Formal operational
Sensorimotor stage:
- age range
- cognitive development involves:
- 6 substages
- birth to 2yrs
- learning about the environment through sensory input and motor actions
- reflexive reactions
- primary circular reactions
- secondary circular reactions
- coordination of secondary circular reactions
- tertiary circular reactions
- internalization of schemas
accomplishments of sensorimotor stage
- object permanence
- representational thought
preoperational stage:
- age range
- cognitive development involves:
2-7 years
- increased representational thought; children able to think about the past and future and about things that aren’t in the immediate environment.
- children engage in more sophisticated forms of make-believe play and use one object to represent another, invent imaginary playmates, and participate in role-playing with other children.
Transductive reasoning
leads preoperational children to think that unrelated events that occur at the same time are causally related
two types of egocentrism
magical thinking
animism
Centration
the tendency to focus on one aspect of an object or situation to the exclusion of all other aspects
Irreversibility
the inability to understand that an action or process can be reversed.
concrete operational stage
- age range
- cognitive development involves:
7-12 years
- children use logical operations (mental activities that allow them to think logically about concrete situations)
- able to classify objects according to their physical characteristics; order items in terms of length or other quantitative dimension; perform number operations such as adding, subtracting, multiplying, and dividing; and conserve
Decentration
the ability to focus on more than one aspect of an object or situation at the same time
Reversibility
the ability to understand that actions and processes can be reversed