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Prenatal Period
Conception to birth
Infancy Period
0-1
Toddler Period
1-3
Preschool Period
3-6
Middle Childhood Period
6-12
Adolescent Period
12-18
Early adulthood
18-40
Middle Adulthood
40-65
Late Adulthood
65+
Domains of human performance
Cognitive Domain
Affective Domain
Psychomotor Domain
Bathing is dependent until
3 bc of drowning risk
Principles of Development
Lifelong
Sequential and predictable
Highly variable within and between children
Multidimensional and directional
Influenced by multiple, interacting forces (e.g. biological, social, cultural, etc.)
Occurs in several domains at the same time
Some skills advance while others decline
Dynamic Systems
Principles of development (2)
Directional
Cephalocaudal
Proximal to distal
Gross > Fine motor
Undifferentitated → Specific
Kinesiological
Antigravity Movements
Mobility and Stability
Asymmetry to symmetry to controlled asymmetry
Rotation/dissociation
9 Areas of Occupation
ADLs, IADLS, Work, Play, Leisure, Social Participation, Health Management, Rest and Sleep, Education
Occupational Continuum ex with eating
Eating → Feeding → Mealtime Prep
Dependent or co-dependent on food, drink, and timing of meal → Semi-independent with food, drink, and timing of meal → Independent
Occupational Continuum ex with Personal Hygiene
Natal
Prenatal
Perinatal
Postnatal or postpartum
Natal: Something related to birth, related to term “native”
Prenatal: Before birth
Perinatal: during birth
Postnatal or postpartum: after birth
Periods of Prenatal Development
Germinal
• 2 weeks from conception- zygote implants into uterine wall
• Circulatory system starting
Periods of Prenatal Development
Embryonic
• 3-8 weeks
• All major body structures formed
• Most susceptible period
• Develop proximodistal and cephalocaudal
Periods of Prenatal Development
Fetal
• 9 weeks to birth
• Complex structural changes
• Weight gain
• 28 weeks: most neonatal reflexes developed
• 32-36 weeks: sucking reflex
Environment in Utero
• Sensory Considerations
• Temperature
• Movement
• Sounds
• Positioning
• Vision
Genetics in Development
Sex linked traits: Hemophilia, Color blindness, MD, Fragile X
Incomplete Dominance: Tay-Sachs
Polygenetic Inheritance: Parkinsons, Diabtes, Autsism, Spina Bifidia, Arthritis
Chromosomal Abnormalities: Down Syndrome, Cri du chat, turner syndrome
Gene-linked Abnormalities: PKU, Huntingtons, CF
Genetic Mutations: Drarfism, ostogeneis imperfecta, limb deformites, Cleft
Changes at Birth
Bombarded by stimuli!
• From water to land
• Fighting against gravity
• Changes in body functions
• Eating
• Breathing
• Voiding
All with an immature CNS!
Any agent that may cause damage during the prenatal period
Causes greatest structural abnormalities during the embryonic period
AND EXAMPLES
Teratogens
Examples
• Alcohol
• Drugs (can be illicit but also certain medications)
• Viruses: CMV, Zika, Varicella, STIs
Type and Severity of teratogens is directly related to (some ex)
• Type of agent
• Dose of agent
• Time of exposure
• Duration of exposure
• Maternal and fetal susceptibility
• Teratogens account for 4-5% of congenital disorders.
• Examples of related diagnoses
• Fetal Alcohol Spectrum Disorders
• Premature birth/fetal growth restriction
• Cognitive Impairment/Neurological issues
• Neonatal Abstinence Syndrome
• Cleft-lip/palate
• Anencephaly
Non-Modifiable Risk Factors for Preterm
Prior Preterm birth
African American Race
Age less 18 or above 40
Poor Nutrition/Low pre-pregnancy wt
Low SES
Cervical Injury
Uterine anomaly
Premature cervical dilation Less 2 cm
Over distended Uterus
Vaginal Bleeding
Excessive uterine act
Modifiable Risk Factors for Preterm
Cig smoking
Substance Abuse
Absent prenatal care
Short interpreg intervals
Anemia
Bacteriuria/UTI
Genital Infection
Strenuous work or High personal stress
Prematurity Trends
• Between 1996 and 2006, preterm birth rose more than 20%
• Mostly due to the rise in late preterm deliveries
• Half of all preterm births involve Cesareans
• Decrease in preterm births from 2007 to 2014
• Mostly due to a decrease in the number of teen and young mother births
• Increase from 2014-2017
• The rate of preterm birth was double among black women versus white
women
• Covid has demonstrated a positive correlation with increase in preterm birth
rates
Prematurity outcomes Past and Present
• Past: Major cause of death
• Now: Greater disability and greater
range of disability
Developmental delays
• Permanent medical conditions
• Slowed development
• Sensory Processing Difficulties
• Academic achievement challenges
• IQ
When is most susceptible period for baby
1st trimester
When will a car accident affect the baby most
3rd trimester
Development and Labor/Birth
• Baby's development signals body to go into labor (unless preterm)
• Labor supports bacterial/digestive development of the baby
• Baby's body structure is designed to support labor
• Anatomical structures
• Reflexes
• Breastfeeding after birth
• Birth Options and Labor Interventions can impact maternal and baby health outcomes
Full Term Birth
37-42 weeks
Size 19-21”
Weight avg: 7.6 lbs
Prematurity Complications
• Hypoxia
• Low birth weight
• Respiratory Distress Syndrome
• Apnea
• Poor temperature regulation
• Intraventricular hemorrhage
• Cardiac conditions
• Chronic lung disease
• Failure to thrive
• Retinopathy of Prematurity (ROP)
• Nutritional difficulties
Birthing Complications
• Perinatal complications
• Brachial plexus injury
• Hypoxic-Eschemic Encepalopathy (HIE)
• Cerebral palsy
• Brain Bleed or Cephalahematoma
• Others
• Birth defects
• Prematurity
Calculated Age and Adjusted Age
Pre-term birth age is corrected until the child is 2 yo
Todays date/Date of eval
SUBTRACT Date of birth
EQUALS = Calculated age
Adjusted age formula
Calculated age
SUBTRACT Weeks premature
EQUALS = Adjusted age
Behaviorism BF Skinner and Watson
Concerns self with observable and measurebale behaviors,
Learning occurs through classical and operant conditioning
Social Learning Theory
Attention → Retention → Motor Reproduction → Motivation
Stim Focus → Rehearse Encode → Pract Feedback → Reward Reinforce
Ecological Systems Theory
Chronosystem: Broad, Events and transitions over a life time (divorce and remarriage and changes in political and social context)
Macrosystem: Wider ideological and cultural context, (Economic Structure, Laws, Culture)
Exosystem: Indirect but powerful influence (Media, local policies, local amenities)
Mesosystem: The interactions between things in microsystem
Microsystem: Immediate enviornment (Peers, family, religon)
Individual
Neuromaturational Theory
Arnold Gesell
– CNS maturation is primary agent for development and change in an individual
– Motor skills develop based on CNS maturation
– Higher cortical levels control lower cortical levels
– Higher level skills are contingent upon development of lower level skills
– Movement progresses from reflex patterns to coordinated motor control
– Rate and sequence of motor skills is consistent
Dynamical Systems Theory
Esther Thelen
– Development can only be understood as the multiple, mutual, and continuous interaction of all the levels of the developing system, from the molecular to the cultural.
– Motor skills develop based on an interaction between multiple systems:
– Body
– Environment
– Task
Developmental Theories
Cognitive-Developmental Theory (Jean Piaget)
– Showed children think in different ways than adults
– Cognitive development is a reorganization of mental processes rather as a result
of nature and nurture
– Schemas are the basic building blocks of intelligent behavior
– Sociocultural Theory (Lev Vygotsky)
– Zone of proximal development
– Scaffolding
Hierarchy of Needs
Abraham Maslow
– Belief that lower level needs need to be met first to enable higher level performance
– People act according to the priority of needs across the life span
– Goal is self-actualization
Psychosocial Theory
Erik Erikson
– 8 psychosocial stages across the lifespan
– Each stage contains a stage-specific conflict
– Differences in personality can be explained by the way a conflict was or was not resolved
Moral Stages of Development
Lawrence Kohlberg
– Extended Piaget’s theory
– Moral development occurs across the lifespan
– Based theory on interviews with children
– Does moral reasoning lead to moral behavior?
Temperament Theory
Stella Chess and Alexander Thomas
Temperament Traits
1. Activity level
2. Distractibility
3. Intensity of reaction
4. Biological rhythmicity
5. Threshold of responsiveness
6. Approach/withdrawal
7. Adaptability
8. Persistence/attention span
Mood Types
– Easy babies
– Difficult babies
– Slow to warm up babies
– Others not clearly defined
Theory of Attachment
John Bowlby and Mary Ainsworth
Considers the importance of the child’s relationship with the mother in terms of social, emotional, and cognitive development
1) Secure attachment
2) Ambivalent attachment
3) Avoidant attachment
4) Disorganized/disoriented attachment
Fine Motor Development
• Hand movement and hands to mouth in utero
• Hands fisted at birth with reflexive grasp
• Hands open more by 3 months and functional grasps emerging around 4 months
• Ulnar to radial progression
• Pincer grasp appears around 10 months and becomes more refined,
preparing for tool use
• 12-18 months: grasping and manipulating coloring utensils
• 24-30 months: separation of ulnar and radial sides of hand
• By 3yo: complementary hand use
Gross Motor Development 1-3 years
• Walking/navigating surface changes (12-18 months)
• Squatting (12-18 months, earlier when holding on)
• Climbing
• Steps
• Creeps (12-18 months)
• Non-reciprocal (24-30 months)
• Reciprocal (30-36 months)
• Running (18-24 months)
• Jumping
• Jumps off small obstacles (24-30 months)
• Jumps over objects with 2 feet (30-36 months)
• Hops on one foot (30-36 months)
12-15 months
2-3 years
24-30 months
12-15 months - Palmar Supinate Grasp
2-3 years - Digital Pronate Grasp
24-30 months - Snips
Physical vs Psychomotor Devlopment
**Physical - Actually growing
Psychomotor- being able to move and do things
Cognitive domain: Piaget Sensorimotor Stage (0-2y)
• Initially dominated by reflexes
• "Thinking" is expressed via motor action
• Sensorimotor actions occur by "accident"
• Get repeated for pleasure or because of specific effect
• Explore the environment and begins to imitate others
• Interactions with objects are sought and
exploration of how to use them
• Mental representation begins
• Pretend play
Cognitive Domain Bandura
Multidomain Theory: Cognitive, Behavioral, Social
Neonate Vision
• Legally blind
• High contrast
• Attracted to moving stimuli
• Preference for faces
• 8-10" range of focus
• Eyes and head move together
Synaptic Pruning
Process of eliminating of unused Nerons
Purpose is to inc efficiency of neural connections
Vision Development
• Begin moving eyes independently from head by 2-4
months
• Begin tracking & visually triggered reaching by 3 months
• Depth perception begins to develop 3-5 months
• Color vision established around 5 months
• Visually guided reaching around 6 months
• Crawling helps develop good eye, hand, foot coordination
Growth slows after..
first year
By 2: half adult height
By 3: Head size 90% adult size
Persistence of a reflex beyond age range
Retained
2 types of reflexes
• Primitive Reflexes
• Function to protect and nourish for survival
• Develop in utero and are present at birth for full
term babies
• STNR, ATNR, Tonic Labyrinthine, Neck Righting,
Landau, Palmar, Suck, Moro, Startle, Plantar
• Postural Reflexes
• Function to provide “practice” for future
voluntary movements (motor development)
• Emerge after birth, replacing primitive reflexes
over time
• Head/Body Righting, Step, Equilibrium reactions
Vision Development 9m-1y
• Refinement of eye-hand coordination
• Vision motivates movement
• Alert to new people and surroundings
• Knows familiar and unfamiliar people
• Watching and imitating faces
Vision Development 1-3 y
• Increasing complexity of eye-hand coordination
• By 2: myelination of optic nerve has occurred;
normal acuity
• Matching objects by a single characteristic
• By 3: retinal tissue is mature, complete basic
formboard puzzles, forming some prewriting
strokes
How Motor Skills are the Foundation for Feeding Solids
Good head and neck control/Able to sit unassisted
Loss of tongue thrust reflex
Able to bring hands and toys to mouth
Developing a pincer grasp
Visual Interest in food and mealtime routines
Imitating motor patterns with mouth
Occupational Continuum personal Hygiene example
Developmental considerations:
• Washing hands less complex than drying hands
• Nighttime bowel control, daytime bowel control before daytime bladder control and nighttime bladder control
By 12 months
• May indicate when diaper needs changing
By 18-24 months
• Holds out hands to be washed, rubs hands together
• Opens mouth for teeth to be brushed
By 24 months
• Shows interest in potty training
• Flushes toilet independently
Co-occupations
Occupations done with another person
Cognitive Development w language
Infants communicate by crying
1-2 months: cooing, gurgling, vocalizing
5-6 months: babbling begins
6 months: early object permanence
7-9 months: clear vowel- consonant sound (da- da); manipulating
environment purposefully
11-12 months: first true word, object permanence most established, cause
and effect more mature
12-18 months Cog Develop
Mastery of object permeance, joint attention imitated by child, knows some body parts
18-24 months cog Develop
deferred imitation, increased rate of word learning, putting words together
Cog Develop 24-36 months
• Able to attend to more than one thing at a time
• Memorizes favorite songs and rhymes
• Very interested in how things work
• Able to remember events from the past
• Knows where you are going by landmarks
• Knows at least 1 color
• Demonstrates simple problem-solving skills
Language Develop 24-36 months Receptive and expressive
Receptive
• Understands
• 2-step directions
• Simple concepts/opposites (in/out,
hot/cold, stop/go)
• Why questions
• New words quickly
Expressive
• Uses 2–3-word phrases
• At least 50% of speech is
understood by caregiver
• Has a word for almost
everything
• Uses words like in, on, under
Early signs of Autism
• Very little eye contact
• Does not respond to caregiver's smile
• Does not point to objects/events to get caregiver's attention
• Does not say single words by 16 months
• Does not start a conversation or cannot continue it
• Rocks, spins, sways, walks on toes for long periods of time
• Over or under responsive to sensory stimuli
• Difficulty with transitions
Object Permanence Definition
Understanding of toys in basket, parents at work, biscuits in jars continue to exist even if they are not visible
SUID Prevention and Plagiocephaly
Increased incidence of:
Positional plagiocephaly
Torticollis
Delayed gross motor development
Moro Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Protective Response, perceived danger, protects vital organs, fight or flight
Appears: Emerges in utero, fully present at birth Integrates: 2-4 months
Stimuli: Sudden Change in sensory stimuli (visual, auditory, tactile, or vestibular)
Response: Abduction and EXT of arms followed by flexion pattern
Rooting Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Supports feeding, baby turns head towards bottle/breast
Appears: Birth Integrates: 3-6 months
Stimuli: Touch to corner of mouth and cheek
Response: Baby turns towards that touch (presumably breast or caregiver with bottle)
Suck Swallow Breathe Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Supports breathing while eating without choking
Appears:32-37 weeks in utero
Integrates: 2-5 months
Stimuli: Nipple placed in mouth
Response: Baby begins sucking, 1:1:1 ratio of suck, swallow, then breath with airway protected
Palmar reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Protective to help baby hold onto parent, assist with grasp development
Appears: birth Integrates: 4-6 months
Stimuli: Pressure on infants palm
Response: Grasp Object in palm
Plantar Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Protective to help baby hold onto parent, assist with gross motor developmental sequence Appears: Birth Integrates: 9 months
Stimuli: Pressure to the ball of the foot under toes Response: Flexion and adduction of toes
Asymmetrical Tonic Neck Reflex - ATNR
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Assist baby to move through birth canal and helps develop cross patterns movements
Appears: 18-20 weeks in utero
Integrates: 6 months
Stimuli: Rotation of head to one side
Response: “fencer pose: ext. of limbs on face side; flex of occipital side
Symmetric Tonic Neck Reflex - STNR
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Separate movements of upper and lower body Foundational for crawling
Appears: 4-6 months
Integrates: 9-12 months
Stimuli: Flexion or extension of the head
Response: Head flex- arms flex and legs extend
Head extend - arms extend and legs flex
Steeping Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Allows baby to crawl to breast after birth Appears: 28 weeks in utero
Integrates: 2 months
Stimuli: Held upright or foot touching solid surface Response: Baby appears to march or take steps
Spinal Galant Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Assist baby to move through birth canal, foundational to crawling and creeping
Appears: 20 weeks in utero
Integrates: 3-9 months
Stimuli: Tactile input on either side of spine
Response: Trunk curves towards side that was stimulated
Tonic Labrinthine Reflex (TLR)
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Foundational for head and postural stability Appears: emerges in around 12 weeks in utero fully present at birth
Integrates: 4 -6 months
Stimuli: Placed in prone or supine position'
Response: Prone- overall flexion pattern
Supine- Overall extension patter
Landau *Secondary reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Necessary for postural development, increases breathing safely in prone
Appears: 4-6 months as TRL intergrates
Integrates: 12-24 months
Stimuli: Baby in prone on flat surface or held Response: Superman pattern with extension in limbs
Head/Optical Righting Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Protective for maintaining airway and establishing equilibrium/balance
Appears: birth - 2 month
Integrates: Persist
Stimuli: Tilt body in any direction
Response: Head orients to remain in upright position
Protective Extension Reflex
Purpose, Appears, Integrates, Stimuli, Response
Purpose: Protective during loss of balance/falls, foundational for equilibrium
Appears: Down - 4mo, Forward 6-7 months, Sideways 7mo, Back 9-10 months
Integrates: Persists
Stimuli: Displace center of gravity outside base of support
Response: Arms reach in the direction the body was displaced in order to stop fall and protect structures
Affective Domain Erikson: Stage 1: Trust vs. Mistrust (0-18 months)
• Child learns "Can I trust the people around me?"
• Based on how fast needs are met when communicated (crying)
• Important event: feeding
• Feeling safe and secure
• Providing affection and comfort is essential
Affective Domain Erikson: Stage 2: Autonomy vs. Shame & Doubt (18 months-3 years)
• Child learned increased independence with supportive encouragement
• Child wants to experiment and “do it myself”
• Increased independence with lead to increased self-esteem
• If child is not permitted to explore independence, they will develop feelings of embarrassment
and doubt
Aff Domain Middle Infancy (4-6 months)
• Early play
• Shows delight
• Laughs
• Reciprocal social interaction
• Pattycake and peek a boo
• Clear preference for caregivers
• Begin to differentiate the emotions of others even if they don't understand them yet
Affective Domain Early Infancy (0-3 months)• First smile (2-3)
• Visual tracking not across midline (B)
• Cries to communicate distress (B-3)
• Temperament stable
• Calms to human voice and face
• Tells difference between mother and
stranger (1)
• Visual tracking across midline (3)
Affective Development
Late Infancy (7-9 months) & Transitional Infancy (10-12 months)
Late Infancy (7-9 months)
• Shows anger and fear (7-9)
• Caregiver attachment
• Separation protests; Protests if
caregiver leaves (7)
• Initiates social interaction
• Emotional beings (9)
Transitional Infancy (10-12 months)
• Shows clear attachment
style
• Stranger/Separation anxiety
• Greets others and shows
regular affection
Affective Development
1-3 years old
• Safe and secure in loving relationships
• Loves being the center of attention
• Recognize self in the mirror or photograph and
makes faces
• Protests and says "No!"
• Likes to do things without help
• Has trouble sharing, may hit, push, and grab to keep
toys
• Watches and copies others
• Shows a wide range of emotions
• Begins to label emotions on self and others
• Shows affection and concern for others
4 types of Parents
Authorative: Clear expectations, definite rules, supportive
Authoritarian: High Expectations, Disciplined, Unsupportive
Permissive: Low expectations, excessive responsiveness
Uninvolved: No boundaries, Little Support
Sensory factors that impact Infant and toddler regulation
• Proprioception
• Temperature
• Interoception: fatigue, hunger, thirst, feeling wet or soiled, feeling sick
• OVERSTIMULATION (CAN BE IN ANY SENSORY SYSTEM)
• Lack of stimulation can lead to boredom and increase need for adult
attention/interaction
4 different play
Unoccupied Play
Solitary Play
Onlooker Play
Parallel Play
Infancy Occupations and Co-occupations
Eating
Beginning self-feeding
Sleep
Sensorimotor (exploratory) play
Toddler Occupations and Co-occupations
Eating & Self-feeding
Sleep and rest
Beginning participation in dressing
Beginning hygiene
Beginning social participation
Beginning education
Play
Average Attention Span of children
Double their age (start range) and add age (end range)
4 years old: 8-12 mins
APA sleep reccomend
Supine for sleep “Back to sleep”
Firm, flat, non-inclined sleep surface
Feeding of human milk
Sleep in caregiver’s room, close to the bed, but a separate sleep surface for at
least the first 6 months
No soft objects: toys, blankets, pillows, bumpers
Offer a pacifier at nap and bedtime
Avoid overheating and head covering
“specific, automatic behaviors performed repeatedly, relatively automatically, and with little variation”
Habits