Can You Improve Your IQ? (Intro Psych Tutorial #127)
www.psychexamreview.com In this video I consider interventions aimed at improving cognitive performance including brain stimulation, off-label drug use, nootropics, and brain training games and apps. While unfortunately there isn't much evidence that any of these can improve fluid intelligence (as measured by assessments like the Raven Progressive Matrices) that can transfer to other tasks, this doesn't mean that we can't make improvements in specific tasks. We can still improve our crystallized intelligence and proper sleep, diet, and exercise can help us to make the most of our potential.
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In this video I introduce 3 eating disorders: bulimia nervosa, binge-eating disorder, and anorexia nervosa. I briefly describe the symptoms of these disorders and how they may arise from complex interactions of biological factors like genes or hormones and environmental factors like stress, the family environment, and social & occupational pressures.
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https://www.youtube.com/watch?v=tENwRW2w8WM
In this video I provide a basic introduction to twin studies and heritability scores. I explain how a heritability score tells us about the role of genes in explaining variance in a trait. I also discuss some common errors and emphasize that heritability is about the role of genes in general, not about specific genes, and that it only tells us about groups of people, not individuals. I also discuss some hypothetical examples that illustrate how differences in environments can influence heritability scores.
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Enable closed-captioning or find a full transcript of this video here: http://www.psychexamreview.com/what-is-heritability/
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https://www.youtube.com/watch?v=wkAG4ovamoo
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In this video I briefly describe the Minnesota Multiphasic Personality Inventory or MMPI, which consists of 338 statements to which subjects respond True or False. I also describe criterion keying, which is a technique for finding patterns of responses for groups of people who are already known to differ in some way, such as already having been diagnosed with a particular mental disorder.
Like these videos? Consider supporting Psych Exam Review on Patreon: www.patreon.com/PsychExamReview
Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email!
Check out my book, Master Introductory Psychology, an alternative to a traditional textbook: http://amzn.to/2eTqm5s
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https://www.youtube.com/watch?v=4NoyAXStA9A
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In this video I describe touch sensation and haptic perception, which refers to exploring the world by grasping. I outline the types of receptor in the skin including mechanoreceptors, thermoreceptors, and nocireceptors, and then discuss how signals are mapped out according to sensitivity in the somatosensory cortex of the parietal lobe. This mapping research was initially conducted by Wilder Penfield and can be used to create a “homunculus” or a representation of a little person in the cortex, which can be done for both the somatosensory cortex and the motor cortex.
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Sensory and Motor Homunculus Diagram
http://willcov.com/bio-consciousness/diagrams/Homunculus%20(Topographic)%20Diagram_files/image295.jpg
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https://www.youtube.com/watch?v=lXO2FRw0-8s
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In this video I end the unit on cognition with the reminder that heuristics are not just about making errors in decision-making. Most of the time heuristics work well and they serve as useful tools for making sense of the world and being able to make decisions with limited information. In some cases they can even make less information more useful for getting to the correct answer, as demonstrated by Daniel Goldstein and Gerd Gigenrenzer's study on the recognition heuristic. Our penchant for shortcuts also helps us to develop greater efficiency and enables the lightning-fast decision-making of chess grandmasters, baseball batters, and chicken sexers. As we make our way through the world heuristics may occasionally cause us to stumble but we shouldn't ignore those times they enable us to leap.
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Check out my psychology guide: Master Introductory Psychology, a low-priced alternative to a traditional textbook: http://amzn.to/2eTqm5s
Daniel Kahneman - Thinking, Fast and Slow (Amazon)
http://amzn.to/2nAWnop
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https://www.youtube.com/watch?v=NgkG-NgfKAY
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In this video I describe some specific genetic disorders that are known to have negative consequences for intellectual development including Down Syndrome, Fragile X Syndrome, Williams Syndrome, and Phenylketonuria.
Introduction to Williams Syndrome: https://www.youtube.com/watch?v=M6n4z0XjPh4
Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email!
Check out my book, Master Introductory Psychology, an alternative to a traditional textbook: http://amzn.to/2eTqm5s
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https://www.youtube.com/watch?v=lLxYDkZeS4M
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In this video I provide an introduction to behavioral economics and the work of Amos Tversky and Daniel Kahneman by describing a heuristic we use when attempting to assess the frequency of events. The availability heuristic is a shortcut that estimates frequency based on how available an event is to us, or how readily we can bring examples to mind. This can cause us to make errors in estimating frequency because ease of recalling events does not necessarily mean that they are more frequent; they may simply be more memorable (such as terrorist attacks, planes crashes, and child abductions). This can cause us to overestimate the likelihood of certain events occurring, while we underestimate the risks posed by events which are actually more frequent.
Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email!
Check out my psychology guide: Master Introductory Psychology, a low-priced alternative to a traditional textbook: http://amzn.to/2eTqm5s
Daniel Kahneman - Thinking, Fast and Slow (Amazon)
http://amzn.to/2nAWnop
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https://www.youtube.com/watch?v=1vZDWiK_1t0