Outline and evaluate the biological explanation of depression. Biological explanation of depression can be explained by neurotransmitter dysfunction. Neurotransmitters such as noradrenalin and serotonin have been shown to be linked with depression. Bunney at al (1965) found that there was low levels of noradrenaline function in the brain of depressed individuals. Also‚ post mortem studies found increased noradrenaline receptors in the brains of depressed suicide victims. When there is low noradrenaline
Premium Neurotransmitter Serotonin Antidepressant
words: schiz meaning split’ and phren meaning mind’. DSM IV (1994) estimate that the occurrence rate of schizophrenia ranges from 0.2%-2.0% worldwide. There are two main explanations of schizophrenia: the biological explanations and the psychological explanations. In this essay I will critically consider the biological explanations. These include genetics‚ neurochemistry‚ brain structure and evolution. Genetic factors of schizophrenia can be explained using studies on twins and studies on family
Premium Schizophrenia Dopamine
Outline and evaluate biological explanations for aggression (24) The biological explanation for aggression states that aggression is innate behavior in people and the environment around them does not cause it. Neurotransmitters in the brain‚ chemicals that allow impulses to be transmitted from one area to another‚ can be used to explain why some people are aggressive. There is evidence to suggest that the neurotransmitters serotonin and dopamine are linked to aggression‚ low levels of serotonin
Premium Violence Anger Cortisol
Early biological theories were limited to the technologies of the time. Increased industrialization‚ and heavy immigration and urban growth were effects of the ending of the cival war. These were the factors that stirred high crime rates up until World War II. Around this time phrenology came into practice. Phrenology is the practice of measuring the skull and other facial features to determine a persons character. The problem with this type of theory was we were letting our perception of human
Premium Crime Criminology Sociology
Biological explanation of phobias Genetic factors One biological explanation for the cause of phobic disorders suggests that we can relate it back to our genetics. This theory values the ‘nature’ side in the nature vs nurture debate. This theory uses twin studies to try and separate genetic factors from environmental factors in order to draw a causal conclusion between genetics and phobias. If a closer concordance rate was found between MZ and DZ twins we could suggest a genetic inheritance
Premium Fear Genetics Panic attack
According to the biological approach the mental disorder Schizophrenia will have an underlying physical cause such as imbalance of hormones‚ brain damage and infection. There is strong evidence that biological factors influence the presence of Schizophrenia. There are certain chemical abnormalities that can be observed in people suffering from schizophrenia. Post-mortems on schizophrenics have shown unusually high levels of dopamine. Dopamine is a brain chemical that increases the sensitivity of
Premium Dopamine Schizophrenia Antipsychotic
The biological approach asserts that something in our biology is the fundamental cause of dysfunctional behaviour which could be a genetic cause or a malfunction of brain structures. Although it is seen as the most common explanation for schizophrenia due to the use of drug therapy‚ it would be deterministic and reductionist to explain schizophrenia only with the biological approach since there are other numerous factors such as the ones related to the cognitive explanation or other environmental
Premium Schizophrenia Dopamine Serotonin
Describe and evaluate the biological explanation of gender development. Give evidence in your answer. (10 marks) The biological approach states that human beings have evolved so that males and females possess different chromosomes that trigger the production of different levels of certain hormones. It is these hormonal differences between the sexes that lead to differences in behaviour. This allows for males and females to perform different roles in reproduction thus ensuring the survival of
Premium Gender Male Sex
TERMS: PSYCHOPATHY 4. 3. BIOLOGICAL PERSPECTIVES 5. 3.1 FAMILY STUDIES; TWIN AND ADOPTION STUDIES 5. 3.2 PSYCHOANALYTIC THEORIES 6-7. 3.3. EYSENCK’S THEORY 7. 4. PSYCHOSOCIAL PERSPECTIVES ON PSYCHOPATHY 8. 4.1 BEHAVIOURAL THEORIES 8. 4.2 SOCIAL LEARNING THEORY 8. 4.3 MODELLING 9. 5. CONCLUSION .. 10-11. 6. REFERENCES 12-13. 1. INTRODUCTION “The biological and psychosocial perspectives
Free Antisocial personality disorder Psychopathy Psychology
trends in crime Assess sociological explanations of gender differences in crime (21 marks) Statistical evidence clearly suggests that women are less likely to commit crime than their male counterparts. For example in 2010‚ 85% of men were sentenced for indictable offences in comparison to only 5% of females. Men are also more likely to be repeat serious offenders and found guilty or cautioned for offending than women. Sociologists refer to structural explanations; which may encourage men to commit
Free Gender Sociology Gender role