Understanding how the brain can grow and change as a result of our environment and experiences is an exciting and important new field in psychology. Maguire’s study on this topic is already a classic. Context One of the most fascinating (relatively) recent discoveries is the idea of neuroplasticity: the brain’s amazing ability to grow and change as a result of different experiences. …
Key Study: Clinical bias and the effects of labelling on diagnosis (Temerlin, 1968)
Clinical bias can affect the validity and reliability of diagnosis and one thing that can cause clinical bias is when a patient is labelled with having a particular disorder. Labelling theory usually refers to how a label can affect the individual being labelled, but it is also used to explain how others can treat someone based on their label. Effects …
Key Study: Confirmation bias: why psychiatrists stick to wrong preliminary diagnoses (Mendel et al. 2011)
Clinical bias can affect the validity and reliability of diagnosis. One example of a clinical bias that could have an effect is confirmation bias. While the use of classification systems could reduce the influence of clinical bias, it might also lead to it. Clinical bias is a general term that refers to any cognitive bias that can affect the diagnosis …
Key Study: HM’s case study (Milner and Scoville, 1957)
HM’s case study is one of the most famous and important case studies in psychology, especially in cognitive psychology. It was the source of groundbreaking new knowledge on the role of the hippocampus in memory. Background Info “Localization of function in the brain” means that different parts of the brain have different functions. Researchers have discovered this from over 100 …
Computer games and the brain: A summary with two key studies
In this post we look at the positive effects of playing computer games by looking at how it might affect the brain, both in young and old people. We know from many MRI studies that our brain changes as a result of experience – this is called neuroplasticity. Therefore, it’s not unrealistic to think that hours spent playing video games …
The negative effects of digital technology on cognition #2 (with key studies): TV, attention and working memory
Technology’s Negative Effects on Memory Numerous studies have investigated the effects of watching television on working memory and executive functions because kids in developed countries tend to watch a lot of television. Watching TV for long periods of time might be harmful for cognition because it doesn’t require us to use our working memory, unlike other activities like reading, doing …
Technology and Memory: The negative effects of digital technology on memory #1 (and key studies)
The following has been adapted from our exam revision book: IB Psychology: A Revision Guide (available here). This is relevant for the working memory model and also for the HL extension: the (negative) effects of technology on cognitive processes and the reliability of cognitive processes. In this post we look at the negative effects of computer games and other technology …
Key Study: The effects of emotion (stress) on memory (Luethi et al, 2009)
The following has been adapted from our exam revision book: IB Psychology: A Revision Guide (available here). This is relevant for the effects of emotion on cognition and the HL extension: the (positive) effects of technology on emotion and cognitive processes and the reliability of cognitive processes. When we feel stressed our body releases a hormone called cortisol. The effects …
Can computer games improve working memory? A look at the positive effects of digital technology on cognition (and key studies)
The following has been adapted from our exam revision book: IB Psychology: A Revision Guide (available here). This is relevant for the working memory model and also for the HL extension: the (positive) effects of technology on cognitive processes and the reliability of cognitive processes. In this blog we look at the positive effects of computer games and other technology …
Cognitive Etiology of PTSD: Appraisals
Updated July 2020 You can prepare for Paper 2 – Abnormal Psychology – by getting ready to answer any question from just the “Etiologies of abnormal psychology” topic. If you are using this strategy, you need to make sure you can explain biological, cognitive and sociocultural etiologies. Etiology – Cognitive appraisals (and re-appraisals) Cognitive Appraisal: In the context of PTSD, …
Key Studies: Reconstructive memory
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)
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)
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 …
Why do marriages end in divorce? A cognitive explanation
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 …
Lesson Idea: Kahn the Caveman
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. …
Key Study: FBM across cultures by Kulkofsky et al. (2011)
Relevant Topics: Emotion and Cognition & Cultural Dimensions This study compares flashbulb memory (FBM) formation across different cultures. It can be used to show the effects of one cultural dimension (individualism and collectivism) on behaviour (FBM formation). If you’re using FBM theory to explain how emotion can affect cognition, this could also be used in an essay as a counter-argument …
Flashbulb Memory Studies
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) …
Schema Theory Teaching Resources
The first topic in Social Influence Part II (support pack coming soon) is Schema Theory. This topic comes after learning about SIT and the out-group homogeneity effect as the latter is closely related to schema theory, an both topics deal with stereotypes. Here’s the first pages of the student workbook for the Schema Theory Topic (Download). Here’s the Powerpoint file that has …
Lesson Ideas: Schema Theory
The first step in teaching schema theory is getting students to comprehend the abstract concept of “schemas” in the first place. In my experience, takes a couple of lessons at least. In our ThemEd Facebook group for IB Psychology Teachers (Join Here) I recently asked our members for some help in coming up with ideas. There were so many great …
Schema Theory: A Summary
Updated, July 2020 Schema theory is perhaps the most difficult theory in psychology to comprehend. But once you understand it, you’ll see the effects of schema everywhere. In this post, we’ll break down the theory step-by-step. What is schema theory? Schema theory’s central claim is that our knowledge of the world is organized and categorized, which can influence our cognition …
Flashbulb Memory Theory (Brown and Kulik, 1977)
Flashbulb memories are “memories for the circumstances in which one first learned of a very surprising and consequential (or emotionally arousing) event.” (Brown and Kulik, 1977). For example, remembering where you were when you found out you got accepted into your dream college, that a loved one had passed away or a public news event like the death of a …
Wason Task Studies
Wason Task studies provide some evidence to support the idea of two systems of processing, as described in the dual processing model of decision making. To recap, the dual processing model of decision making posits that we have two systems for processing information: System One: fast, automatic and intuitive System Two: slow, controlled and rational In the Wason Task, participants …
Key Study: Cortisol and Memory (Buchanan and Lovallo, 2001)
This study can be found in Chapter 4 of the Student’s Guide. Background Studies conducted before this experiment in 2001 showed that cortisol can have a detrimental effect on memory. Animal studies, however, had shown the opposite: stress can improve memory. This was the first study (at the time) that investigated the influence of cortisol on emotional memory in humans. …
Working Memory Games
Before diving in to the study of Baddeley and Hitch’s working memory model, it’s important that you first comprehend what “working memory” is. I’ve found that playing some of these games is a fun way to comprehend the concept of working memory and it will make your it easier to understand your teacher’s explanations of things like the central executive, …
If you’re interested: Clive Wearing
There’s never enough time to cover everything in our IB Psychology course, so here are a few resources that might not fit in normal classes, but you might find interesting nonetheless. Clive Wearing is very similar to the famous case of HM (Henry Molaison). However, whereas HM’s hippocampus was damaged due to surgery, Wearing’s was damaged due to an illness. …