Zak (2009)

IB Psychology: Zak (2009)

Zak et al (2009) carried out a study to test the role of testosterone on aggression. You can use this study for the following content in the biological approach:Research methods used in the biological approach.Functions of hormones in human behaviour.Ethical considerations in research in the biological approach.The study may also be used in the human relationships option:The role of biological factors in human relationships

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