Genetic vs Environmental Influences
- Created by: ScarlettsRevision
- Created on: 19-05-16 14:10
View mindmap
- Genetic vs Environmental Influences
- Addiction
- Genetic influence
- Noble et al's research found A1 variant of DRD2 gene in more than 1/3 deceased alcoholic and only 1/5 of non-alcoholics (theories of addiction
- However
- If it was entirely genetic it would be within 100% of alcoholics
- Fowler found 44% concordance rate in MZ twins - should be 100%
- Environmental factors must also be involved
- If it was entirely genetic it would be within 100% of alcoholics
- Environmental factors must also be involved
- However
- Noble et al's research found A1 variant of DRD2 gene in more than 1/3 deceased alcoholic and only 1/5 of non-alcoholics (theories of addiction
- Environmental influence
- Conditioning
- Griffiths: Gamblers use rewards as reinforcement
- Supported by Robins et al
- However
- Robinson and Berridge: lots of people take addictive drugs - relatively few become addicted
- must be genetic predisposition
- Robinson and Berridge: lots of people take addictive drugs - relatively few become addicted
- However
- However
- Robinson and Berridge: lots of people take addictive drugs - relatively few become addicted
- must be genetic predisposition
- Robinson and Berridge: lots of people take addictive drugs - relatively few become addicted
- Supported by Robins et al
- Griffiths: Gamblers use rewards as reinforcement
- Conditioning
- Genetic influence
- Crime
- Genetic explanation: Jacobs et al found XYY chromosome
- Supported by Osborn and West: 13% non-criminal fathers had criminal records, 20% criminal fathers had records
- However ext. from Farrington et al: bad neighbourhood and young mother
- Evidence of environmental influence
- However ext. from Farrington et al: bad neighbourhood and young mother
- Supported by Osborn and West: 13% non-criminal fathers had criminal records, 20% criminal fathers had records
- Environmental influence: Bowlby's maternal deprivation hypothesis
- 14 out of 44 had affectionless psychopathy; 12 suffered pro-longed seperation
- However: Rutter stated that attachment is shown for fathers, siblings and even inanimate objects
- not just mother seperation
- Conclusion
- Evidence of environmental influence
- Untitled
- Conclusion
- not just mother seperation
- However: Rutter stated that attachment is shown for fathers, siblings and even inanimate objects
- 14 out of 44 had affectionless psychopathy; 12 suffered pro-longed seperation
- Genetic explanation: Jacobs et al found XYY chromosome
- Untitled
- Aggression
- Environmental influence
- Bandura's demonstration that children learn aggressive behaviour by social learning theory - they mimic what they see
- However this only explains children - what about adult's aggression?
- Bandura's demonstration that children learn aggressive behaviour by social learning theory - they mimic what they see
- Genetic influence
- The gene MAOA is responsible for the regulation of serotonin in the brain. Low levels of serotonin are thought to lead to aggressive behaviour, so a problem with MAOA could lead to aggressive behaviour.
- Brunner (1993) found that in a Dutch family with a history of serious aggressive crime the men had abnormally low levels of MAOA, supporting this explanation
- However: this is deterministic
- Akers' social learning theory: crime learnt from who you associate with
- However: this is deterministic
- Brunner (1993) found that in a Dutch family with a history of serious aggressive crime the men had abnormally low levels of MAOA, supporting this explanation
- The gene MAOA is responsible for the regulation of serotonin in the brain. Low levels of serotonin are thought to lead to aggressive behaviour, so a problem with MAOA could lead to aggressive behaviour.
- Environmental influence
- Untitled
- CONCLUSION
- Overall greater environmental influence due to the role of free will
- still genetic pre-dispositions
- Overall greater environmental influence due to the role of free will
- Addiction
- Conclusion
- Combination of genetic and environmental factors
- Conditioning
- Griffiths: Gamblers use rewards as reinforcement
- Supported by Robins et al
- Supported by Robins et al
- Griffiths: Gamblers use rewards as reinforcement
- Genetic influence
- Noble et al's research found A1 variant of DRD2 gene in more than 1/3 deceased alcoholic and only 1/5 of non-alcoholics (theories of addiction
- However
- Fowler found 44% concordance rate in MZ twins - should be 100%
- Environmental factors must also be involved
- Environmental factors must also be involved
- Fowler found 44% concordance rate in MZ twins - should be 100%
- However
- Noble et al's research found A1 variant of DRD2 gene in more than 1/3 deceased alcoholic and only 1/5 of non-alcoholics (theories of addiction
- Conclusion
- Both environmental and genetic influences but environmental greater as you can choose to control behaviour
- Genetic influence
- The gene MAOA is responsible for the regulation of serotonin in the brain. Low levels of serotonin are thought to lead to aggressive behaviour, so a problem with MAOA could lead to aggressive behaviour.
- Brunner (1993) found that in a Dutch family with a history of serious aggressive crime the men had abnormally low levels of MAOA, supporting this explanation
- However: this is deterministic
- Akers' social learning theory: crime learnt from who you associate with
- However: this is deterministic
- Brunner (1993) found that in a Dutch family with a history of serious aggressive crime the men had abnormally low levels of MAOA, supporting this explanation
- The gene MAOA is responsible for the regulation of serotonin in the brain. Low levels of serotonin are thought to lead to aggressive behaviour, so a problem with MAOA could lead to aggressive behaviour.
- Environmental influence
- Bandura's demonstration that children learn aggressive behaviour by social learning theory - they mimic what they see
- However this only explains children - what about adult's aggression?
- Bandura's demonstration that children learn aggressive behaviour by social learning theory - they mimic what they see
Comments
No comments have yet been made