In today’s increasingly connected, online world, our personal information — and the identities that come with it — is essentially up for grabs to even the most amateur of criminals. With new data breaches causing panic on a routine basis, identity theft is becoming more and more of a commonplace crime that leaves victims scrambling to pick up the pieces. However, there is one form of identity theft from which recovery is impossible. Over 5.3 million Americans in the United States alone have fallen victim to Alzheimer’s Disease (AD) (Alzheimer’s Association, 2015)– a ruthless and cunning identity thief. Its assault is fairly subtle as it slowly strips its victims of their sense of self, whisking away cognitive abilities such as language, problem-solving skills, attention, and – perhaps most salient of all – the memories that are so crucial to the maintenance of one’s identity and way of life.
Although “memory loss” is listed as a common symptom of AD, this term is particularly uninformative due to the presence of multiple, separate memory systems that serve a variety of different functions – the loss of which are characteristic of AD. For instance, deficits to working memory – or the system responsible for holding onto new, fleeting information long enough for further processing and encoding 
into memory storage – have been identified in AD patients. However, most of us would probably associate the vague term “memory loss” with long-term memory (LTM) – the brain’s storage system for permanent, lifetime memories. The memories stored within LTM can be broken down into distinct types, all of which can be affected by AD: procedural, semantic, and episodic memories. Procedural memories essentially involve instructions for common, frequently performed tasks. For instance, after finally mastering the task of riding a bike, we no longer have to actively recall the steps involved. Instead, we automatically run through the motions without much conscious effort. Semantic memory, on the other hand, involves what is essentially our long-term storage of more general knowledge – for example, the “random” facts that you can recall in order to answer Jeopardy questions. Read more…
Imagine a boy who grew up never knowing where his next meal would come from or when it would come. Now imagine a boy who had everything handed to him.
Who do you predict will have higher cognitive functioning, which consists of processes such as pattern recognition, memory, attention, and language? If you guessed the second boy, you are correct. Childhood adversity has been shown to negatively impact important cognitive functions, such as language development, sustained attention, and memory, which result in poor reading and math abilities, lower IQs and academic achievement (Fernald, Weber, Galasso & Ratsifandrihamanana, 2011). To figure out why this is the case, we must consider an important characteristic of our brains—their plasticity, or ability to change!
So, why is plasticity an important characteristic of our brains? What are the advantages of our cognitive functioning being susceptible to change? Adaptation! Adaptation got Mittal, Griskevicius, Simpson, Sung, and Young (2015) thinking about the universality of the negative impact on cognitive functions that childhood adversity has been shown to have. If the brains of those who grow up in stressful environments can be negatively affected by their experiences shouldn’t that mean that they could also be positively affected? The work of Mittal et al. (2015) tells us the answer!
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Have you ever wondered if people picture others differently in their minds? Is the picture of Barack Obama in your mind different from that in your brother’s mind? Research suggests that depending on the attitudes you have, it might be. A recent study has proposed that political opinions can change the mental pictures we have of politicians.
Image source: http://static01.nyt.com/images/2015/01/30/us/politics/presidential-candidate-tracker-1422646394170/presidential-candidate-tracker-1422646394170-articleLarge-v9.jpg
In cognitive psychology, the concept of pattern recognition is commonly understood as assigning meaning to some incoming stimulus. One example of pattern recognition is face recognition. There are two main systems used for face recognition: analytic and holistic. The holistic approach assigns meaning by using top-down processes. These processes are those that are generated from knowledge or experience that we have about the stimulus. Bottom-up processes, which use the features of a stimulus to ascribe meaning, are prevalent in the analytic approach to face recognition. However, it is the top-down approaches that can help explain why Young, Ratner, and Fazio (2014) found that mental representations of Mitt Romney depend on political affiliations.
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Do you ever think of a word or phrase and you know you know it, you just can’t seem to find it? You’re frustrated and want so badly to be able to say the word, one might even say it’s at the tip of your tongue. This feeling is called a tip-of-the-tongue state, or the TOT phenomena. It’s likely that on top on this frustrating experience, you are flailing your hands around trying to gesture the word at the tip of your tongue. Although you may look strange doing so, gesturing may actually be the thing that helps you retrieve that word you so desperately want to access.
Gestures, which are body or limb movements, can be characterized as an element of a word’s meaning in some
one’s mental representation, or bank of knowledge. Humans often pair certain gestures with different words based on a possible function or shape of a word that is an object
For example, for the word ‘brush’, you may run your hands through you hair. This hand gesture is associated with the word ‘brush’ because it is paired with the function of a brush, located in your mental representation. Because of this association, it is possible to find yourself gesturing the functions of a word even though you cannot actually access what that word is. Luckily for those frustrated by TOT states, gesturing can help retrieve the word that is difficult to access.
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Going in to the 2012 Olympics, gymnast McKayla Maroney was considered to be the best vaulter in the world. There was no doubt in anyone’s mind that McKayla would win the Olympic gold medal. After contributing a nearly perfect vault to help her team win the gold medal, she was ready to do it again for event finals. She did her first vault and took a hop that would likely cost her 3/10 of a
point. Nothing major, but she knew that she could do better. When she went back to the end of the runway and prepared for her second vault, all McKayla wanted to do was to stick the landing like she had done so many times in practice. She wanted it so badly that she overthought what should have been automatic, she did not rotate enough, and she ended up landing on her butt, causing a full point to be deducted. McKayla choked, costing her the Olympic gold medal.
Mental toughness is a key aspect in all sports. Every athlete knows that no matter how strong you are, how skilled you are, or how much time you have put into practice, when you are in a pressure situation, it all comes down to how mentally tough you are. It is one of the most frustrating things as an athlete to mess up on a skill that you can normally do in your sleep, especially when that one mistake costs you the game or competition. Read more…
Remember back in high school, the last basketball game of the season against your biggest rival? You were guarding the best player on the other team, let’s call her Chelsey. The teams were going back and forth in points. As the seconds ticked off the clock the game picked up in intensity. There was a lot of pushing and shoving that was going unnoticed by the refs. You personally were being elbowed and pushed out of the box by Chelsey. The look on her face was pure determination and aggression; a desire to win the competition. Unfortunately, your team lost, and it was a long bus ride home. During it, all you and your teammates could talk about were the other players and how aggressive they looked.
Later, you see Chelsey again at the All-star game. This time, the two of you are on the same team. You play alongside Chelsey for the entire game, feeding her passes and rebounding her misses, working as a real team. After the game, you hear someone from the other team talking about how aggressive looking Chelsey was. This makes you think back to how you remembered Chelsey’s face as aggressive as well. But thinking back to the playing in the All-star game you don’t remember Chelsey as having an aggressive face.
Why did the way you remember Chelsey’s face change? The answer is context. Read more…
Imagine that you are sitting in a coffee shop, peacefully eating your cannoli and sipping your latte. As you look out the window, you notice someone approach
a parked car, smash the window, and steal something out of the front seat of the car. Your calm afternoon quickly becomes anxiety-ridden: your leg bounces, your voice shakes, your heart pounds, your stomach churns, and your mind races. You catch a glimpse of the criminal’s face as they are running off, and you promptly call 911. But did you know that the anxiety that you experienced when witnessing the crime could impact your ability to remember the criminal’s face later? We tend to recognize faces pretty easily, especially when someone is familiar to us, so you’re probably thinking that you would also be able to recognize the criminal’s face without a problem. After all, you did just watch them commit a crime right in front of your eyes. 
Your anxiety about the situation may have impaired your ability to recognize that person’s face, though, and a recent study conducted by Curtis, Russ, and Ackland (2015) sought to determine why and how this happens. Their research wanted to see how a spike in anxiety impacts someone’s ability to remember a face. More specifically, they wanted to know when the time of onset of anxiety is most impactful (before or after seeing a face) and whether or not anxiety increases stereotypes, or assumptions about the thoughts, actions, and behaviors another group of people, when someone is recognizing a face that is a different ethnicity than their own.
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3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588…You can tell from the first three or four digits that this whole bunch of numbers represents a simple idea, the ratio of a circle to its diameter, π. Now, if I say that the person who can memorize the most number of the decimals of pi can win a million dollar prize, what strategy do you think is the most effective, and how many decimals do you think are enough to win the prize?
One strategy that may come to your mind is creating little chunks of decimals of pi and memorize chunk by chunk. For example, the first 20 digits can be chunked into ‘31415,’ ‘92653,’ ‘58979,’ and‘32384.’ The last one or two digits of the previous chunk may cue you about the first one or two digits of the latter group. However, after you memorize a considerable number of decimals, you will find it difficult to continue because the digits cues start to repeat and you will experience too much retroactive interference, which describes the phenomenon that things memorized later may negatively affect your ability to recall something memorized earlier. A similar thing happens when you are trying to remember two people’s phone number. After you memorize the second phone number, the first one will appear to be a bit vague in your memory. You can choose to enlarge the group size from 5 digits to 10 digits to reduce the cue repetition, thus the retroactive interference can be reduced as you are using more digits as cues. However, you may still find it hard to continue after you reach a certain part when all the digits and cues entangle and you cannot recall them in a correct sequence, which is the key of memorizing pi. Due to the difficulties you find, you may come up with a reasonable estimation and wisely give up because it is kind of a waste of time. Read more…
Ever notice the diagrams in your textbook? Or the visuals in your professor’s slides? Or maybe the pictures in an instruction manual to construct furniture? It seems that professionals have caught onto the idea that pictures are beneficial to learning and understanding content. Whether is comes to providing information in a presentation, deciding how to best visualize data for a report, or giving directions for a task, it obvious that visual content provides some benefit in absorbing information that is not attainable through simple text. I am going to walk your through when visuals are most helpful, when they aren’t, and how to best include visuals in your own work. Read more…
The stereotypes of the “nerd” and the “dumb jock” are some of the most pervasive in the media. The nerd is so un-athletic he might hurt himself walking to class, and the jock spends more time in the gym than in the library. While these stereotypes may be well known, the importance of exercise and health has increased over the last decade. Not only does exercise improve short-term mental concentration and mood by the release of endorphins, it is also being studied for long-term benefits. Even mainstream media has commented on exercise benefits, for example in the movie legally blonde displayed in figure 1.
Figure 1. Quote from Legally Blonde (2001) movie
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