IBDP Psychology Chapter 1 Notes

biological approach to behavior


These notes have specially been curated by expert teachers to simplify and enlighten concepts given in IB Psychology HL. The notes are comprehensive in nature and are sufficient to study the chapter in depth and one need not look for other resources beyond the notes provided on our website which can be accessed for free. The notes for Biological Approach to Behaviour IBDP HL are available on our official website and can be downloaded for free. You are one click away from obtaining all that you need to score well in IB Psychology HL. 

The material made available on Tychr’s website is available for all IBDP subjects and is specially curated after an extensive amount of effort to ensure that the notes are in consonance with the IB curriculum and are an amalgamation from various textbooks prescribed by the IBO. Students often face a challenge understanding concepts, especially concepts that are new and tricky, these IB Psychology Notes will help the student cover the chapter of Biological Approach to Behaviour entirely while explaining every concept in a detailed and easy way.

In this chapter on Biological Approach to Behaviour we try to understand the structure of the human brain and how every function performed is correlated to a particular region. We also discuss the idea that supports the localization of functions performed by the brain and a research opposing the same. The split-brain research by Roger Sperry that puts to test the theory of localization is explained. We also study neuroplasticity and its different scales along with remapping of the sensory cortex. Next, we get a deep understanding of the working of the nervous system through the study of neurons and various neurotransmitters like serotonin and dopamine.

Alternatively, hormones and neurotransmitters are discussed in a detailed manner in the chapter, followed by a study of genes and genetic similarity and how genes are related to aggression and anxiety in an individual. The chapter also talks about the various methods of neuroimaging like CAT, MRI, EEG, PET, fRMI to study the brain. We also study the role animal research plays in the study of understanding human behaviour and the ethical concerns related to studying animals followed by Bateson’s model that determines the practicality of a research.