Teenage pregnancy: an evolutionary explanation

Travis Dixon Biological Psychology Leave a Comment

Adverse childhood experiences (ACEs) have been linked with increased risks of developing a number of issues, including health problems (cancer, heart disease), psychological problems (addiction, depression) and sexual health issues (STDs, high-risk sexual behaviour and unwanted pregnancies). Studies have shown that teenage pregnancy is correlated with ACEs and there might be an evolutionary explanation for this link.¹ Most teenage pregnancies …

Biological Approach “Additional Terms”
IB Psych Paper 1 Review

Travis Dixon Biological Psychology 6 Comments

In the new IB Psychology guide they “clarified” their expectations by adding a number of new terms to the syllabus. For the biological approach, this has added significant content and quite a bit of confusion. This post aims to simplify the requirements and help you find the right studies for the right examples. The full “Additional Terms Review Guide” is …

IB Psych Key Terms Quiz – THE BIOLOGICAL APPROACH

Travis Dixon Assessment (IB), Biological Psychology, Revision and Exam Preparation Leave a Comment

You can prepare for IB Psychology by asking three simple questions: What is…? How does…? …but…? The first question tests your knowledge, the second tests your deeper understanding of the topic and the third tests your critical thinking. The following quiz is designed to test your ability to answer the first question. (Scroll down for the answers) Read More Understanding IB …

Biological Approach: Key Terms Glossary

Travis Dixon Biological Psychology Leave a Comment

Knowing the meaning of key terms is one of the first steps in learning (and revising) any topic in Psychology. The following is a list of key terms and their definitions for the Biological Approach in IB Psychology. You can download a quiz to test your knowledge of these terms HERE. Glossary The biological approach to understanding human behavior: Trying …

Key Study: “The Sweaty T-shirt Study” (Wedekind et al. 1995)

Travis Dixon Biological Psychology, Human Relationships, Key Studies 3 Comments

Can we smell someone’s genes? Not their trousers, but their genetics. The Swiss Biological Researcher Claus Wedekind and his colleagues conducted a famous study to see if our preference for smells is linked with our genetics. In other words, they wanted to see if we prefer the smell of someone who has genes that would be a good match with …

MDMA and PTSD
How ecstacy (a serotonergic agonist) could help alleviate PTSD

Colin McElvenny Abnormal Psychology, Biological Psychology Leave a Comment

Ecstasy has been a popular party drug since the 1980s. The active ingredient,  MDMA (3,4-methylenedioxy-N-methylamphetamine), can cause feelings of euphoria, increased empathy, enhanced sensations (e.g.; touch, sight, and auditory) and a positive mindset. Due to being categorized by the US’ Drug Enforcement Agency as Schedule 1 which is described as,  “…substances, or chemicals…with no currently accepted medical use and a …

Agonists and Behaviour: Pramipexole
Dopamine agonists in the treatment of depression

Travis Dixon Abnormal Psychology, Biological Psychology Leave a Comment

An agonist is a chemical messenger that binds to the receptor sites of neurons and activates them to create a response. In this post, we’ll look at how the drug pramipexole is an agonist of the receptor sites for dopamine. Since dopamine has been linked to depression, we can also understand why this might be another option for treatment.  Depression …

Posts You May Have Missed…

Travis Dixon Biological Psychology Leave a Comment

We’ve been doing some upgrading to our blog. In this time, you may not have been getting the email alerts of new posts. Here they are just in case. Synaptic Pruning and Neural Networks Synaptic pruning (aka neural pruning) helps the formation of neural networks. In this post we’ll look to understand the terms “synaptic pruning” and “neural networks.” We’ll …

Ketamine and PTSD
How an antagonist of glutamate may help treat PTSD

Travis Dixon Abnormal Psychology, Biological Psychology Leave a Comment

Agonists and antagonists are chemical messengers that affect the process of neurotransmission. They bind to specific receptor sites of neurotransmitters and this can affect brain function and behaviour. Ketamine is one antagonists of the receptor sites of the neurotransmitter, glutamate. In this post we’ll learn more about antagonists, how they work, how ketamine may help PTSD and a key study …

Ketamine: An antagonist used in the treatment of depression

Travis Dixon Abnormal Psychology, Biological Psychology Leave a Comment

Ketamine is the newest drug in the treatment of major depressive disorder (MDD). But how does it work? In this post, we’ll look at how ketamine is an antagonist of the neurotransmitter glutamate and why this can help fight depression. For years serotonin has been the main focus of causes and cures for depression. As low levels of serotonin and …