Biological Etiology of PTSD: Abnormalities in the brain

Travis DixonAbnormal Psychology, Biological Psychology

Updated, July 2020 After teaching my unit on PTSD (Chapter 4), I found that my students developed a really good understanding of how PTSD is not explainable by a single etiology, but rather it is the product of multiple-interacting factors. While this is great, it does mean that when the question asks about “one” specific etiology, they found it difficult …

Key Study: Mate preference across cultures (Buss, 1989)
A cross-cultural study on attraction and mate preference

Travis DixonBiological Psychology, Human Relationships, Love and Marriage

“Beauty is in the eye of the beholder.” This classic saying means that we all have a different opinion about what is beautiful. When it comes to romantic relationships, is this really the case? A common field of study for psychologists is attraction and mate preference: what do people look for in a husband, wife, or lover? Buss’s classic study shows …

Key Studies: Reconstructive memory

Travis DixonCognitive Psychology, Criminology, Studies and Theories

False Memories and the Misinformation Effect Background Information Elizabeth Loftus is a prominent memory researcher whose work has had significant impacts on the legal system in the United States. She is often called on to testify in legal cases against eye-witness testimony. In the past, if an eyewitness claimed that they saw someone commit a crime they would almost definitely …

Key Study: The Primacy and Recency Effects (Glanzer and Cunitz, 1966)

Travis DixonCognitive Psychology

The following has been adapted from IB Psychology: A Student’s Guide Evidence for MSM: Serial position effect (primacy and recency effects) The serial position effect (aka primacy and recency effect) is a cognitive phenomenon whereby people tend to remember the first (primacy) and last (recency) items in a series. This provides evidence for the MSM: people tend to remember the first items …

Key Study for the Dual Processing Model (Thinking and Decision Making)

Travis DixonCognitive Psychology

The following is adapted from: “IB Psychology: A Revision Guide.” Tversky and Kahneman spent many years studying people’s thinking and decision making. As a result, they devised a dual processing model that attempts to explain two systems people use when processing information: system one and system two. The system used to process information can affect our decision making. System one …

Genetic similarities – twin and kinship studies on antisocial behaviour and aggression

Travis DixonBiological Psychology, Research Methodology

Clarifications to the new IB Psychology guide (first exams May 2019) has said that students might be asked specifically about twin and/or kinship studies to discuss “genetic similarities.” This blog post can be used as supplementary information if required. How and why twin studies are used in psychology Twin studies gather groups of monozygotic (MZ – identical) and dizygotic (DZ – …

Why do marriages end in divorce? A cognitive explanation

Travis DixonCognitive Psychology, Human Relationships, Love and Marriage

The material in this post will help students who are studying for the Human Relationships option and want to make sure they can answer any possible question about the topic: “Personal relationships.” Understanding why marriages may deteriorate and end in divorce is key in preparing to answer questions relating to the topic “why relationships may change or end. Perhaps the …

Review Idea: Key Study Jenga

Travis DixonUncategorized

I’m sure this idea has probably been around for years, but I’ve never seen it so here’s what I came up the other day as I spied a jenga set in a classroom. This review idea would work well at the end of the course before exams. It might be an idea to give to students to do for themselves …

Lesson Idea – Understanding Etiologies With a Case Study

Travis DixonAbnormal Psychology, Biological Psychology, Post-Traumatic Stress Disorder, Teaching Ideas

This lesson is designed to help students understand how reduced function in the vmPFC might be connected with symptoms of PTSD. As with other similar lesson ideas, it tries to make the abstract more concrete by giving real-life examples.  The Activity Students are to read the following summary of Due, a fictionary Vietnamese War vetern. After reading the summary, they …

Lesson Idea: Kahn the Caveman

Travis DixonAbnormal Psychology, Cognitive Psychology, Post-Traumatic Stress Disorder, Teaching Ideas

This lesson comes from the PTSD unit/chapter and will help students understand an evolutionary explanation of the effects of stress (emotion) on memory. It also helps consolidate learning about fear conditioning, which is a key concept in the study of PTSD. Kahn the Caveman! Kahn is living 40,000 years ago. He’s part of a hunter-gatherer tribe living in Southern Europe. …

Essay Writing Tips: Three Rules of Three

Travis DixonAssessment (IB), Revision and Exam Preparation

If you’re learning how to write essays in IB Psychology or looking for good tips to pass on to your students, I would suggest the following “Three Rules of Threes.” #1: Three Parts to an Essay Every good essay has three parts (excluding the introductions and conclusions): Central argument/s Supporting Evidence Counter argument/s The central argument is where you address …

Can perceptual illusions teach us tolerance?

Travis DixonGeneral Interest

Warning: This post is me rambling and thinking out-loud. “I don’t know how on Earth you can see a black and blue dress, when that’s clearly white and gold.” “Are you mad. What? What? You’re messing with me, right? They’re definitely grey and blue sneakers. Where the heck are you seeing pink and white?” These were some of the things …

So you want to assess ethical considerations?

Travis DixonResearch Methodology, Teaching Ideas

One way of evaluating studies in psychology is to consider whether or not the study might have ethical issues. When evaluating ethics, many students want to jump straight to condemning studies by saying something like, “This study was unethical because…”  I would refrain from making such condemnations and using this definitive language because it’s often very hard to completely write-off …

What should we include in a mock exam? (Year One)

Travis DixonAssessment (IB), Teaching Ideas

The guidance in this post is going to be most helpful for teachers who are: teaching a two year course using our textbook, IB Psychology: A Student’s Guide  …and are following a similar course structure to the one I’ve proposed here. (i.e. Criminology, Social Influence and Quantitative Methods covered in Year One). Here’s what I include in my End-Of-Year Exam for …

Free flashcard maker

Travis DixonRevision and Exam Preparation

When it comes to revising for tests and exams, it’s hard to go past flashcards as an excellent way to review. While digital versions, such as quizlet, have their benefits, I personally have always preferred to have hard-copies in my hands. But who has the time to spend hours and hours writing out flashcards? What if you’ve got messy handwriting? …

Exam Review: Why I’m pleased I didn’t teach the command terms (Paper 2)

Travis DixonAssessment (IB)

I realize that critiquing the inconsistent use of command terms in IB Psychology assessments is like shooting very confused fish in a very small barrel, but I just can’t help myself. Was anyone else surprised to see the command term “Explain” in Paper 2 this year for the Abnormal Option? Here’s the question in question: Explain, with reference to psychological …

How to go beyond “describing” and into “application” of studies

Travis DixonAssessment (IB), Revision and Exam Preparation

One of the most common mistakes IB Psychology students make is they don’t explain studies, i.e. they don’t apply the study to show how the study is relevant to the question. Instead, students summarize aims, methods and results and that’s it. This is description. What’s missing? An applied conclusion. Describing a study = summarizing aims methods conclusions Explaining a study = summary …

7 exam tips for evaluating studies

Travis DixonRevision and Exam Preparation

When you’re preparing for your exams and you’re aiming for a 7, here are some tips that will help you study smarter, not harder. Tip #1: Ignore internal validity, including… Hawthorne effect Screw you effect Demand characteristics Participant expectancy effect I think you should avoid focusing on internal validity factors when you’re trying to explain limitations. Why? Here are a …

Sociocultural etiologies of bulimia nervosa (and studies)

Travis DixonAbnormal Psychology, Social and Cultural Psychology

Background Information Research has shown that body dissatisfaction is widespread amongst Western teenage girls and adult women. Furthermore, body dissatisfaction has been found to be an independent predictor of disordered eating. This makes it a significant risk factor in the development of Bulimia Nervosa (BN) and other eating disorders. Body dissatisfaction: being unhappy with one’s body. It’s usually measured by comparing …

Cognitive etiologies of bulimia nervosa (and studies)

Travis DixonAbnormal Psychology

Introduction Potential risk factors for the development of bulimia nervosa (BN) include those related to thought patterns (i.e. cognition) like body dissatisfaction, idealization of thinness, distorted body images and what people perceive others to prefer in terms of body weight and shape. These thought patterns could then lead to behaviours that could lead to the development of BN, like dieting …

Flashbulb Memory Studies

Travis DixonCognitive Psychology

Here is a summary of evidence to use when discussing Brown and Kulik’s FBM theory: SUPPORTING EVIDENCE Brown and Kulik conducted a study to test their theory using 80 American participants – 40 African American and 40 caucasian. They were asked questions about 10 events, 9 being very famous public events (e.g. assassinations of public figures like JFK and MLK) …

Subscribe to our brand new YOUTUBE channel

Travis DixonUncategorized

I have to apologize for being a bit slow on blog posts these days – I’ve been busy getting Grade 12s ready for upcoming exams. But I’ve also been busy with our brand new youtube channel. I love creating materials that make life a little easier for teachers and students, so it’s great now I can make video tutorials that …