Social Work ASWB Masters

Human growth and development encompasses the biological, psychological, cognitive, and social changes that occur throughout the lifespan. Social workers must understand these processes to assess client functioning, identify developmental delays or disruptions, and design appropriate interventions, and they must see each client within the cultural, social, and environmental context that shapes behavior.

Prenatal Development

Prenatal development occurs in three stages. The embryonic stage carries the highest vulnerability to teratogens, including alcohol, drugs, infections, and environmental toxins.

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Conception to week 2: cell division and

Weeks 3 to 8: major organ systems and body

Week 9 to birth: rapid growth, organ

implantation in the uterine wall

structures form

maturation, nervous system development

Factors affecting prenatal development include maternal nutrition, substance use, stress levels, access to prenatal care, and exposure to environmental hazards. Fetal alcohol spectrum disorders result from maternal alcohol consumption and cause permanent cognitive and behavioral impairments. Low birth weight and preterm delivery correlate with socioeconomic disadvantage, inadequate prenatal care, and maternal health conditions.

Development Across the Lifespan

The table below summarizes the major developmental changes and the psychosocial task Erik Erikson identified for each period of life.

LifeStage	PhysicalandCognitiveDevelopment	Erikson'sCrisis	SocialDevelopment
Infancyand	Brainreachesabout80%ofadultsizebyage3;	Trustvs mistrust(infancy); .	Attachmenttocaregivers
toddlerhood(birth	motorskillsdevelopheadtotoe	autonomyvs shameand .	formsthetemplateforlater
to3)	(cephalocaudal)andcentertoextremities	doubt(toddlerhood)	relationships
	(proximodistal);sensorimotorlearning;object
	permanenceat8–12months;firstwordsaround
	12 months two-word combinations by age 2 ,
Earlychildhood(3–	Growthslowsbutstayssteady;running ,	Initiativevs guilt .	Playbuildscognition ,
6)	jumping drawing cutting;increased , ,		emotionalexpression social ,
	myelination;preoperationalthinking(symbolic		skills andcoordination; ,
	thought egocentrism centration no , , ,		pragmaticlanguagedevelops
	conservation);vocabularygrowsfromabout
	200wordsat2to2000by5 ,
Middlechildhood (6–12)	Refinedmotorskills;brainareasforattention , planning andimpulsecontroldevelop;concrete , operationalthinking(conservation , classification seriation reversibility) , ,	Industryvs inferiority .	Peers school and , , 1 communityexpand;gender segregationinpeergroups peaks;moralreasoningbased onfairnessandreciprocity

Lifestagesataglance(Continued)

LifeStage	PhysicalandCognitiveDevelopment	Erikson'sCrisis	SocialDevelopment
Adolescence(12–	Puberty (hypothalamic-pituitary-gonadal axis);	Identityvs roleconfusion .	Peerconformitypeaksin
18)	thelimbicsystemmaturesbeforetheprefrontal		earlyadolescence;romantic
	cortex contributing to risk -taking; formal ,		relationshipsemerge;more
	operationalthinkingandmetacognition		parentconflict butparents ,
			remainimportant
Earlyadulthood	Peakstrength coordination reactiontime and , , ,	Intimacyvs isolation .	Education career , ,
(18–40)	sensoryacuity;postformalthinkinginsome		partnership andparenthood; ,
	adults		Levinson'sentryintoadult
			roles the"dream"and , ,
			mentors
Middleadulthood	Visualandauditoryacuitydecline;metabolism	Generativityvs stagnation .	Midlifereassessment;the
(40–65)	slows;menopausetypicallyat45–55;		"sandwichgeneration"cares
	crystallizedintelligencestableorrising fluid ,		foragingparentsand
	intelligencemaydecline		dependentchildren
Lateadulthood	Sensorydecline reducedimmunefunction , ,	Egointegrityvs despair .	Retirement lossofspouse ,
(65+)	lowerbonedensity;normalslowingof		andfriends grandparenting; ,
	processingspeedandworkingmemory;		socialsupportremainscrucial
	wisdommayincrease

Infancy and Toddlerhood

Attachment theory, developed by John Bowlby and expanded by Mary Ainsworth, explains the emotional bond between infants and caregivers. Secure attachment develops when caregivers respond consistently and sensitively to infant needs. The Strange Situation procedure assesses attachment quality by observing infant behavior during caregiver separation and reunion. Early attachment patterns influence relationship formation throughout life.

Secure					Anxious-Ambivalent					Avoidant					Disorganized
Consistent sensitive ,					Insecurepattern					Insecurepattern					Insecurepattern
caregiving

Erikson identified trust versus mistrust as the central psychosocial crisis of infancy: consistent, nurturing care promotes basic trust in the world and oneself. Autonomy versus shame and doubt characterizes toddlerhood, as children assert independence while learning self-control.

Early and Middle Childhood

In Piaget's preoperational stage, children use words and images to represent objects and experiences, but egocentrism limits their ability to consider other perspectives, centration focuses attention on one aspect of a situation, and they lack conservation, the understanding that quantity remains constant despite changes in appearance. Children master basic grammar, often overgeneralizing (saying "goed" instead of "went"). Excessive criticism or restriction during the initiative versus guilt stage may produce guilt and inhibition.

In the concrete operational stage, children think logically about concrete objects and events, understand cause and effect, and consider multiple dimensions at once, though abstract and hypothetical thinking remains limited. During industry versus inferiority, success in academic and social skills builds self-esteem and work orientation; repeated failure or unfavorable comparison to peers may produce feelings of inferiority. Friendships are based on shared activities and mutual trust.

Lawrence Kohlberg's stages of moral development describe progression from preconventional morality (based on rewards and punishments) to conventional morality (based on social approval and maintaining social order). Most school- age children operate at conventional levels, following rules to gain approval and maintain social relationships.

Adolescence

The timing of puberty varies considerably, and early or late maturation affects self-image and social relationships. In Piaget's formal operational stage, adolescents develop abstract thinking, hypothetical reasoning, systematic problem- solving, and idealistic and theoretical reasoning. During identity versus role confusion, adolescents explore roles, values, and identities to establish a coherent sense of self. James Marcia expanded Erikson's work with four identity statuses.

Commitment Made

No Commitment

Identity Achievement

Moratorium

Exploration

Exploration followed by commitment

Active exploration in progress

Foreclosure

Identity Diffusion

Exploration

Commitment without exploration

No exploration or commitment

Adulthood and Aging

During intimacy versus isolation, successful resolution produces a capacity for love and commitment; failure may lead to isolation, loneliness, and difficulty forming meaningful connections. Health behaviors established in early adulthood significantly influence long-term outcomes. In middle adulthood, generativity involves guiding the next generation through parenting, mentoring, or contributing to society, while stagnation involves self-absorption and lack of psychological growth. Chronic health conditions become more prevalent, and working memory and processing speed decline while semantic memory remains intact.

In late adulthood, significant individual variation exists in the rate and extent of physical aging. Dementia represents pathological cognitive decline, with Alzheimer's disease the most common cause; distinguishing normal aging from dementia requires careful assessment. Ego integrity involves accepting one's life as meaningful and valuable; despair involves regret, bitterness, and fear of death. Life review supports integration and meaning-making.

Elder abuse, including physical, emotional, and financial abuse and neglect, is a significant concern in late adulthood that requires assessment and intervention. Section 1.6 covers its indicators and the role of Adult Protective Services.