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PSM Exam Answers - Park's Textbook of Preventive & Social Medicine
1. ACCULTURATION
Definition: Acculturation means "culture contact." When people with different types of culture come into contact, there is a diffusion of culture both ways.
Ways by which culture contact takes place:
- Trade and commerce
- Industrialization
- Propagation of religion
- Education
- Conquest
Examples:
- The British brought their culture into India through conquest - Indians are said to be the "next best Englishmen"
- Introduction of scientific medicine to developing countries is through culture contact
- Changes in food habits (e.g., orthodox Brahmins eating meat today) - culture contact
- Widespread use of tobacco worldwide - culture contact
- Radio, television, cinema - major factors in shaping cultural-behaviour patterns
Key point: Acculturation has both good and bad aspects. Good: spread of scientific medicine. Bad: spread of tobacco use.
2. TYPES & FUNCTIONS OF FAMILY
Definition of Family
The family is a primary unit in all societies. It is a group of biologically related individuals living together and eating from a common kitchen. It differs from a "household" in that all household members may not be blood relations (e.g., servants).
The family is:
- A biological unit - members share a gene pool
- A social unit - share a common physical and social environment
- A cultural unit - reflects the culture of wider society
- An epidemiological unit
- A unit for providing social services and comprehensive medical care
Types of Families (3 main types)
1. Nuclear Family
- Universal in all human societies
- Consists of married couple + their dependent children, occupying the same dwelling
- Husband usually plays dominant role
- Absence of grandparents places greater burden on nuclear family for child rearing
- Husband-wife relationship is more intimate than in joint family
- "New families" = those under 10 years duration (important for family planning studies)
2. Joint (Extended) Family
- Common in India, Africa, Far East, Middle East
- More common in agricultural areas
- Orthodox Hindu family is a joint family
- Characteristics:
- Multiple married couples + children living in the same household; all men related by blood
- Property held in common; common family purse
- Authority vested in senior male member
- Familial relations enjoy primacy over marital relations; early and arranged marriages are common
- Merit: "Union is strength" - provides economic and social security to old, helpless, and unemployed; pools income for education, marriages, commercial ventures
3. Three Generation Family
- Common in the West
- Representatives of three generations related by direct descent living together
- Occurs when young couples cannot find separate housing and continue to live with parents while having their own children
Family Life Cycle (6 phases)
| Phase | Description | Beginning | End |
|---|
| I | Formation | Marriage | Birth of 1st child |
| II | Extension | Birth of 1st child | Birth of last child |
| III | Complete extension | Birth of last child | 1st child leaves home |
| IV | Contraction | 1st child leaves home | Last child leaves home |
| V | Completed contraction | Last child left home | 1st spouse dies |
| VI | Dissolution | 1st spouse dies | Death of survivor |
Functions of the Family
- Residence - Provides a clean and decent home (patrilocal or matrilocal)
- Biological/Reproductive - Sexual satisfaction and reproduction; regulates sexual behaviour; ensures continuation of the human race
- Economic - Economic security and cooperation; acts as a unit of production and consumption
- Educational/Socializing - First and primary social institution for socializing children; instills customs, values, language, norms
- Protective - Protection and emotional security for members (especially children, elderly, sick)
- Religious - The family is the foundation of religious training; religious ceremonies are performed within the family
- Recreational/Affectional - Family provides emotional satisfaction and affection; "Home is the biggest hospital"
- Status - Every family occupies a position in the social structure; family of origin determines initial social status
3. ROLE OF FAMILY IN HEALTH & DISEASE
The family plays a critical role as both a cause and a buffer in health and disease:
1. Family as a unit of health care
- Family is the basic unit for comprehensive health care delivery
- Health habits, diet, hygiene practices, and health-seeking behaviour are all learned within the family
- The family provides physical and emotional support during illness
2. Family as a source of disease
- Shared genetic pool - hereditary diseases cluster within families (e.g., diabetes, hypertension, sickle cell disease)
- Shared environment - common exposure to infections (e.g., TB, respiratory infections), toxins, dietary patterns
- Family stress - family conflicts, role transitions, loss of a member can trigger physical and mental illness
- Family life cycle stress - adolescence, first pregnancy, menopause, retirement are high-risk periods
3. Family as a protective factor
- A stable, functional family buffers members against mental illness and psychosomatic disorders
- Social support from family reduces morbidity and mortality
- Family-based health education is effective in changing behaviour
4. Epidemiological importance
- Family is the unit for disease surveillance (disease clustering in families)
- Family studies help identify genetic vs. environmental factors in disease aetiology
- Family health records are vital for preventive care
5. Sick role within the family
- When a member falls ill, family dynamics shift: the sick person relinquishes normal duties, seeks medical aid, and follows physician's orders
- The family provides care and enforces the sick role
4. SOCIAL CULTURAL FACTORS IN HEALTH & DISEASES
Culture is defined as "learned behaviour which has been socially acquired." Cultural factors deeply influence:
- Personal hygiene
- Nutrition and food habits
- Immunization acceptance
- Seeking early medical care
- Family planning
- Child rearing practices
- Disposal of refuse and excreta
- Outlook on health and disease - the whole way of life
Examples of cultural factors causing disease:
| Cultural Factor | Health Impact |
|---|
| Smoking (Western countries) | Lung cancer |
| Alcohol drinking | Cirrhosis of liver |
| Pan/betel nut chewing (India) | Oral cancer |
| Food customs (e.g., high-fat diets) | Cardiovascular disease |
| Religious practices | Can promote or hinder vaccination |
| Gender roles | Underdiagnosis of illness in women |
| Caste system | Discrimination in healthcare access |
| Traditional medicine beliefs | Delay in seeking modern medical care |
| Dowry/female infanticide practices | Female mortality |
Social factors also include:
- Poverty - linked to malnutrition, infectious disease, poor sanitation
- Education - higher education correlates with better health outcomes
- Occupation - occupational hazards; social class differences in disease patterns
- Housing - overcrowding facilitates airborne diseases (TB, measles)
- Social class - lower social class shows higher morbidity and mortality
5. OPERATIONAL RESEARCH
Definition (Park): "The application of scientific methods of investigation to the study of complex human organizations and services."
- The term was coined during World War II in connection with the use of radar
- It is a sociological science distinct from pure or applied research
- Main objective: "To develop new knowledge about institutions, programmes, use of facilities, the people working in these activities and the individuals and communities served by them" - to secure optimal utilization of resources in men, material, and money
Phases of Operational Research (7 steps):
- Formulation of the problem
- Collection of relevant data (by suitable sample if needed)
- Analysis of data and formulation of hypothesis
- Deriving solutions from the hypothesis or "model"
- Choosing the optimal solution and forecasting results
- Testing of solution (e.g., pilot projects)
- Implementing the solution in the whole system
Operational Research Team:
- It is a team work job
- Minimum composition in social medicine: public health administrator + epidemiologist + statistician + social scientist
- Plus ancillary workers (clerks, field workers)
- Team is headed by a director responsible for the whole project
Operational Research in Health Services:
Examples of problems studied:
- Optimal size of area/population for a midwife or basic health unit
- Ideal vehicle for local health workers
- Architectural design of hospitals and health centres
- Queuing problems in OPD and hospital waiting lists
- Integration of specialized services with general health services
- Study of patient flow and hospital efficiency
6. SOCIAL PROBLEMS
Definition: Individual problems become social problems when they affect a large number of people, amounting to a threat to the welfare or safety of the whole group.
Common social problems:
- Poverty - root cause of many health problems
- Crime and delinquency
- Disease
Social problems with public health overlap:
- Alcoholism
- Sexually transmitted diseases
- Mental illness
- Narcotic addiction
Social problems with public health implications:
- Housing inadequacy
- Divorce
- Population growth
- Increasing number of old people (aging population)
These require combined sociological and public health action.
Related concepts:
Social Pathology: Links poverty, crime, delinquency, and vagrancy to disease and social conditions. Examples: social pathology of accidents, diabetes, CVD, cancer, and chronic bronchitis have all been studied in medical literature.
Social Defence: Covers preventive, therapeutic, and rehabilitative services to protect society from antisocial/criminal conduct. Includes:
- Prevention and control of juvenile delinquency
- Eradication of beggary
- Elimination of prostitution
- Control of alcoholism, drug addiction, gambling, and suicides
- National Institute of Social Defence (established 1975 under Department of Social Welfare, India)
7. SOCIAL SECURITY
Definition (ILO): "Security that society furnishes through appropriate organization, against certain risks to which its members are exposed."
Risks covered by social security:
- Sickness
- Invalidity
- Maternity
- Old age
- Death
Social security also includes: Social insurance + Social assistance
Social Security for Industrial Workers in India
The following legislations provide protection:
- Workmen's Compensation Act, 1923 - compensation for work-related injuries/death
- Central Maternity Benefit Act, 1961 - maternity leave and benefits
- Employees State Insurance (ESI) Act, 1948 - comprehensive health insurance for factory workers; administered by ESIC
- The Family Pension Scheme, 1971 - pension for families
Social Security for Civil Servants
- Pension, gratuity, provident fund, and family pension schemes
- Central Government Health Scheme (CGHS) - comprehensive medical care to all Central Government Employees (started in Delhi, extended to other cities)
Social Security for General Public
- Life Insurance Corporation (LIC) - covers risks of death, accidents, fire
- General insurance schemes
Key difference: Social insurance (contributory - worker, employer, state contribute) vs. Social assistance (non-contributory - funded by state alone for the very poor)
8. SOCIAL STIGMA
Definition: Social stigma is a severe form of social disapproval or discreditation directed at individuals or groups due to a perceived characteristic that deviates from social norms. It involves labeling, stereotyping, separation (us vs. them), status loss, and discrimination.
Types of Stigma:
- Public stigma - negative attitudes held by the general public toward a stigmatized group
- Self-stigma - internalization of stigma by the affected individual (shame, self-blame)
- Institutional/Structural stigma - policies and practices of institutions that restrict opportunities for stigmatized groups
Conditions commonly associated with social stigma:
- Mental illness (depression, schizophrenia)
- HIV/AIDS
- Leprosy
- Tuberculosis
- Epilepsy
- Substance use disorders
- Sexually transmitted diseases
- Cancer (in some cultures)
- Physical disabilities
Impact of social stigma on health:
- Delays in seeking healthcare (fear of being labeled)
- Non-disclosure of symptoms/illness to healthcare providers
- Poor medication adherence (especially in mental illness, HIV/AIDS, TB)
- Social isolation and depression
- Reduced quality of life
- Discrimination in employment, housing, and social life
Stigma and Public Health:
- Stigma is a major barrier to disease control programs (TB, leprosy, HIV/AIDS)
- It undermines screening, testing, and treatment uptake
- Anti-stigma campaigns are part of national control programs (e.g., NACP for HIV, RNTCP for TB)
Reducing Stigma - Approaches:
- Education - correcting myths and misconceptions about diseases
- Contact - direct positive contact between general public and affected persons
- Protest - advocacy against discriminatory portrayals
- Legislation - laws protecting rights of affected persons (e.g., Mental Healthcare Act 2017 in India)
Source: Park's Textbook of Preventive and Social Medicine (Park's PSM) - Sociology chapter, Operational Research chapter, Social Security chapter. All answers are aligned with the standard PSM exam format expected in MBBS/MD Community Medicine examinations.