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Psychology /IB Psychology HL - BLOA - Outline and Explain How Bloa Principles Can Be Demonstrated In Research

IB Psychology HL - BLOA - Outline and Explain How Bloa Principles Can Be Demonstrated In Research

Psychology6 CardsCreated 6 months ago

This is shown by twin and adoption studies — for instance, the Minnesota Twin Study demonstrated high concordance rates in traits like intelligence among identical twins reared apart, pointing to genetic influence on behaviour.

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principles of BLOA

Principle 1: patterns of behaviour are heritable
Principle 2: animal research may inform our understanding of human behaviour
Principle 3: cognition, emotion, and behaviour are products of the physiology of our nervous and endocrine systems

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Key Terms

Term

Definition

principles of BLOA

Principle 1: patterns of behaviour are heritable
Principle 2: animal research may inform our understanding of human behaviour
Principle 3: co...

Principle 1

patterns of behaviour are heritable
- well supported by genetics and evolutionary psychology studies
- but behaviour is reliant on environmen...

Caspi and Moffitt (2012)

conducted 26 year longitudinal study
involved 1036 children born in 1972 NZ
children inheriting a short versi...

Principle 2

animal research may inform our understanding of human behaviour

a biological ap...

Suomi and Lesch (2002)

identified a gene that affects effectiveness of processing serotonin
cerebral spinal fluid of 132 juvenile rhesus monkeys wa...

Principle 3

cognition, emotion, and behaviour are products of the physiology of our nervous and endocrine systems

adrenaline is associated with c...

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IB Psychology HL - BLOA - Outline and Explain How Bloa Principles Can Be Demonstrated In Research

Term	Definition
principles of BLOA	Principle 1: patterns of behaviour are heritable Principle 2: animal research may inform our understanding of human behaviour Principle 3: cognition, emotion, and behaviour are products of the physiology of our nervous and endocrine systems
Principle 1	patterns of behaviour are heritable - well supported by genetics and evolutionary psychology studies - but behaviour is reliant on environment too, not just genetic inheritance Supporting study: Caspi and Moffitt (2012) identical twins (monozygotic twins - MZ) are 100% genetically identical because developed from same egg which means one acts as a control for the other however, twin research never shows 100% concordance rate one can infer that genes are a predisposing factor rather than the direct cause of behaviour
Caspi and Moffitt (2012)	conducted 26 year longitudinal study involved 1036 children born in 1972 NZ children inheriting a short version of the gene MAOA were more likely to exhibit aggression but this was only in cases where the children experienced an abusive upbringing carriers of MAOA who experienced good parenting were usually normal
Principle 2	animal research may inform our understanding of human behaviour a biological approach is based on the idea that all animal species evolved from a common ancestor thus animals are fundamentally similar in many ways mechanisms that underlie behaviour one of those similarities Supporting study: Suomi and Lesch (2002)
Suomi and Lesch (2002)	identified a gene that affects effectiveness of processing serotonin cerebral spinal fluid of 132 juvenile rhesus monkeys was collected analysed for serotonin metabolite traces (high metabolite level = high efficiency of serotonin processing) monkeys that had low metabolite levels were more aggressive
Principle 3	cognition, emotion, and behaviour are products of the physiology of our nervous and endocrine systems adrenaline is associated with creation of emotion Supporting study: Schachter and Singer (1962) aggression has been linked to various brain structures Supporting study: Raine et al. (1997)