Sociocultural Factors in Schizophrenia

- All aspects of society & culture in which an individual lives that affect their behaviour. - Social environment cannot be ignored when understanding causes of schizophrenia. Both social & biological factors need studying; including their interaction.

- Greater incidence of schizophrenia in densely populated inner-city Chicago than less populated outskirts -> urban populations show higher incidence. - 0.5% higher incidence of schizophrenia among people born & raised in urban areas. - Greater socioeconomic adversity & environmental pollution; including overcrowding; drug abuse; exposure to toxins & infectious agents = factors influencing incidence of schizophrenia. - Notes cite UN estimate that 66% of world population will live in urban areas by 2050 -> mechanism requires careful consideration.

- Solitary backgrounds; few friends & more limited social networks than individuals without schizophrenia. - Contact with others experienced as stressful -> withdrawal. Urbanity & overcrowding can also lead to social isolation. - Cuts individual off from feedback about inappropriate / antisocial behaviours & thoughts -> begins to act more strangely.

- Longitudinal study of 5362 people born during a specific week in March 1946; found 30 diagnoses of schizophrenia. Primarily used 1946 birth cohort to support a neurodevelopmental model. - Future patients more likely to prefer solitary play at ages 4-6. Printed slide = at age 13 more likely to rate themselves less socially confident. Handwritten mini essay also describes elevated social anxiety at 15 & significantly higher odds ratios for solitary play. - Future patients show altered sociocultural development long before clinical onset. Early isolation can be conceptualised as a sociocultural stressor rather than purely a passive prodromal symptom. - Withdrawal deprives individual of a strong social-support network -> entrenches cycle of social defeat -> interacts dynamically with biological vulnerabilities -> increased risk of adult psychosis.

- Since 1970s; higher schizophrenia rates shown in Afro-Caribbean populations. Also more likely to be compulsorily admitted to psychiatric hospitals. - Increased risk not apparent in Caribbean population. Notes therefore argue against a genetic explanation for higher rates in migrant populations & suggest additional stress from migration / assimilation. - Increased diagnosis among children of Afro-Caribbean migrants in UK. - Stress from migration & assimilation; discrimination in society & psychiatry = proposed explanations for higher incidence / diagnosis.

- Being male; being a migrant; living in an urban environment & being born poor / in poverty. - Whether sociocultural risk factors work concurrently or some predispose individuals to a higher risk than others.

- Russia = 6 per 1000; UK = 3 per 1000. - Soviet-era psychiatrists increasingly diagnosed this subtype even without symptoms / evidence of underlying psychiatric pathology. State & KGB used diagnosis to incarcerate thousands of political activists in mental institutions. - Notes describe use of ICD & diagnosis rates levelling out to resemble other Western countries.

- Unclear whether urban living genuinely increases social stress compared with rural settings. Urban environments may also offer protective resources. - Access to healthcare; higher employment rates; better educational levels & higher social capital. - Higher social capital may protect individuals from stress. - Uncertain whether urbanicity itself acts as a stressor or is confounded by complex interplay of environmental factors such as pollution. Urban-rural associations alone do not identify which factors account for risk.

- Developing mental illness such as schizophrenia -> decline in socioeconomic status -> migration to inner-city areas. - Creates false impression urbanicity causes schizophrenia when urban residence may instead be an effect of illness -> direction of cause & effect uncertain. - Individuals at higher risk of psychotic disorders reduced likelihood of developing schizophrenia when moving to more rural environments. - Moving to rural environments linked with reduced risk -> supports direct link between urban living & onset; contrasts with explanation that urban residence merely follows illness.

- Social isolation correlates with schizophrenia but establishing directionality is difficult. May be primary cause or early behavioural indicator of oncoming psychosis. - Single people living in neighbourhoods with fewer single individuals faced greater risk of developing schizophrenia -> supports social isolation as a relevant factor. - Longitudinal data such as Jones et al. (1994) help; but definitive conclusions remain elusive. Controlled interventions such as community befriending groups need proper implementation to clarify role of isolation.

- Unclear whether ethnicity itself or institutional discrimination accounts for higher schizophrenia rates observed in Afro-Caribbean populations. - Past negative encounters with authority figures -> suspicion towards psychiatrists. Suspicion may be mislabelled as paranoia -> artificially inflated diagnostic rates. - Schizophrenia incidence among ethnic minorities increases as proportion of ethnic minorities in local area falls -> intensified social isolation. - Ethnicity; minority stress & psychiatric prejudice heavily intertwined -> difficult to assess as singular unlinked causes. Sociocultural accounts broaden environmental understanding but face methodological & causal limitations.