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- Human behavior in the social environment systems theory and the ecological perspective
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- HUMAN BEHAVIOR IN THE SOCIAL
ENVIRONMENT
SYSTEMS THEORY AND THE
ECOLOGICAL PERSPECTIVE
The biological, psychological, and
sociological influences on human
development
A bio-psycho-social perspective
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Andrew T. Nilsson, Ph.D.
Andrew T. Nilsson, Ph.D.
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
Eastern Connecticut State University
Eastern Connecticut State University
- THE MEDICAL MODEL
An early model for social work practice
• STUDY
• DIAGNOSIS
• TREATMENT
• CURE
• Assessment
• DSM IV
•Focus on the individual with the problem
• Therapy
•Assumes the professional has the knowledge
• Cure? and power to cure
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- THE SYSTEMS/ECOLOGICAL PERSPECIVE
BIOLOGICAL ROOTS
• Ecology – The complex relationship between living things
and their environment.
• Symbiosis – Mutual dependence – each part needs each
other part – each takes from and gives to the environment
SOCIAL WORK PERSPECTIVE
• Views person-in-environment; takes focus off the
individual
• Utilizes a bio-psycho-social perspective
• Contributes to a strengths perspective/empowerment
vs.
Deficit and dependency (I’m O.K. – You’re not O.K.)
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- THINK AND SHARE
What were the bio-psycho-social factors that had most
influence in making you the person you are today?
• BIOLOGICAL FACTORS?
• PSYCHOLOGICAL FACTORS?
• SOCIAL FACTORS?
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- BIOLOGICAL INFLUENCES
• Common biological factors:
– Physical appearance; sex; race; age; abilities or disabilities; family
history of inheritable conditions such as cancer, alcoholism,
schizophrenia, depression, etc.
• Do we start with a clean slate?
– No. At birth our slate is already written on by by heredity
– But environmental factors influence the unfolding of biological
development. Einstein would not have become Einstein if he had
been born into a family that could not feed him or who failed to
provide him with intellectual stimulation.
• Is biology destiny?
– The nature-nurture, heredity v. environment debate
– Can we modify biological inheritance? Genetic engineering,
mapping of the human genome, genetic selection
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- PSYCHOLOGICAL INFLUENCES
• Intelligence Personality Self-image
• Where does your psychological make-up come from?
– Inheritance (biology)
– Experiences (sociology)
• Cooley’s looking glass self – we learn who we are from
how others treat us
• Useful theory? One person may be strengthened by
growing up with an alcoholic parent; another destroyed.
What makes the difference?
• Important issue – application of theory to practice:
– If behavior learned (a response to environment) it can be
unlearned
– If behavior inherited, change may be more problematic.
• Can the leopard change its spots?
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- SOCIAL INFLUENCES
• People: Family and family relationships; relationships with
key individuals (parent, grandparent, spouse, significant
other)
– Influence can be positive or negative; nurturing and
supportive or destructive
– Clearly people are an important part of the factors which
make us who we are.
• Social environment: community, neighborhood
• Economics: economic status influences resources and
opportunities available to the individual
• Religion
Moral: bio-psycho-social factors interact to make us who we are.
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- REVIEW
BIO-PSYCHO-SOCIAL INFLUENCES
• BIOLOGICAL INFLUENCES:
– Physical appearance; sex; race; age; abilities or disabilities;
family history of inheritable conditions such as cancer,
alcoholism, schizophrenia, depression, etc.
• PSYCHOLOGICAL INFLUENCES:
– Intelligence, personality, self-image
• SOCIOLOGICAL INFLUENCES:
– People (family, peers, significant others), social environment
(community, neighborhood), economics, religion
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- SYSTEMS THEORY
A way of looking at individuals and their complex
environment; the interactive patterns between people, groups,
and institutions
System:
• A group of objects within a boundary
• Each object has a defined function and structural
relationship to the other objects within the system
• The objects are engaged in a dynamic process
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- SYSTEMS
solar system clock human body
• Boundary
• Defined function
• Structural relationship
• Dynamic process
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- BOUNDARIES
• Separate system from external environment – other systems
• Separate subsystems within the system
• Separate “personal space” – define individual units which
comprise the system
• Boundaries may be permeable or impermeable
– Closed systems – self-contained; little influence form
outside
– Open systems – active exchange with external
environment
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- A CHANGE IN ONE PART OF A SYSTEM
AFFECTS ALL PARTS
HOMEOSTASIS - DISEQUILIBRIUM - ADAPTATION
What would happen if
Earth were destroyed
by a nuclear war?
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- A CHANGE IN ONE PART OF A SYSTEM
AFFECTS ALL PARTS
HOMEOSTASIS - DISEQUILIBRIUM - ADAPTATION
Earth becomes cosmic dust.
The gravitational balance of
the solar system is
thrown out of wack.
DISEQUILIBRIUM
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- A CHANGE IN ONE PART OF A SYSTEM
AFFECTS ALL PARTS
HOMEOSTASIS - DISEQUILIBRIUM - ADAPTATION
Gradually the planets settle
into new orbits.
A new equilibrium
(homeostasis) is achieved.
ADAPTATION
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- HUMAN SYSTEMS
SOCIETY – OUR SOCIAL SYSTEM
•The systems perspective
portrays society as a smoothly
operating network of social
EDUCATION
FAMILY institutions.
• Each institution performs
some function or functions
ECONOMY essential to the maintenance of
the society.
RELIGION •Our social institutions are
interdependent. Each relies on
and supports the others.
LEGAL
POLITICS •A change in one social
institution will impact the entire
society. Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- HUMAN SYSTEMS
SOCIETY – OUR SOCIAL SYSTEM
•Equifinality refers to the fact
EDUCATION that there are many different
FAMILY means to the same ends.
• Social institutions take
different forms in other
ECONOMY
societies; perform their essential
functions in different ways.
RELIGION
•The boundary of our social
system is the outer limit of
LEGAL
people who live by our social
POLITICS institutions – the American way
of life.
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- THE FAMILY AS A SOCIAL SYSTEM
THE SMITH FAMILY
FATHER JOHN MOTHER MARY
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- THE FAMILY AS A SOCIAL SYSTEM
The Smith family:
Father, mother, John, Mary
• What are the elements of the Smith family system?
• What are the boundaries of the Smith family system?
– Nuclear family
– Extended family
• Each member has a role (essential function)to play
– Father: instrumental role (bread winner)
– Mother: expressive/affective role (homemaker/nurturer)
– Children?
• What about Fleazie, the Smith family cat?
– In work with families, the relevant system may not be the
biological nuclear family. May include other relatives and/or
unrelated household members. Family is best defined by the
people who live in it.
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- SUBSYSTEMS IN THE SMITH FAMILY
Put focus on different aspects of family functioning
• Parental unit
• Marital unit
• Siblings
• Parent-child subsystem(s)
Change and the Smith family system:
• Change in one part of a system effects all parts
• What happens when Mrs. Smith gets a job?
Is the Smith family an open or closed family system?
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
- SYSTEM LEVELS
• Microsystems – The smallest unit of analysis – typically
the individual.
• Mezzo systems – Typically small groups in which
individuals are involved – family, friendship groups, work
groups.
• Macro systems – The largest units of analysis – society,
culture, social institutions, communities, organizations
• Exosystems – Systems outside the immediate area of
analysis which may have an impact on it
Copyright © Allyn & Bacon 2003
Copyright © Allyn & Bacon 2003
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