Author Archives: laniefung

Learning from Mistakes

Image from learnforeverblog.blogspot.com

Image from learnforeverblog.blogspot.com

“We learn more from our failures than from our successes.” You probably have heard of that phrase more than once in your life. And you may have even thought of the phrase as untrue. We make little mistakes repeatedly all the time: forgetting to put soap into the dishwasher, not thinking before we speak, eating too many sweets. We don’t always learn from those mistakes. Rather, we often repeat them.

But mistakes can separated into many categories: From stupid mistakes, like stubbing your toe; to simple mistakes, like missing the bus. There are also more complicated mistakes that may result from sequences of mistakes building upon each other, leaving you with relationships that fail, a negative outcome to a significant event, or a poor grade in school.

Researchers from the University of Exeter have found that we do learn more from our failures than from our successes, especially when it comes to more involved and complex mistakes.

Complex mistakes often result from errors in predictive judgement. In other

Image from science.ca

words, every decision we make is predictive of the final outcome. Good judgement results in success, while poor judgement may leave us with failure. The study done at the University of Exeter used electrophysiological measurements (electrodes) to monitor the brain activity of volunteers when a prediction was made on a computerized task, and after new information was introduced, which make their predictions incorrect. The volunteers needed to learn from the incorrect prediction in order to stop repeating the error. A strong brain signal was measured in the lower temporal region of the brain every time the volunteer was presented with visual that had previously cause them to make an error, and before there was time to consciously make a better decision. This early “warning signal” immediately alerts us of our previous mistake and prevents us from repeating it.

Researchers from Michigan State University have also found that the brain reacts differently when one thinks that they can learn from a mistake verses someone who doesn’t think that they can learn from a mistake. When one believes that they can learn from an accepted mistake, the brain is tuned to pick up on mistakes faster.

 

 

References:

http://research.msu.edu/stories/learning-our-mistakes-hardwired

University of Exeter. “Why We Learn From Our Mistakes.” ScienceDaily, 2 Jul. 2007. Web. 14 Mar. 2012.

Wills, A.J.,Lavric, A, Croft, G. and Hodgson, T.L (2007). Predictive learning, prediction errors and attention: Evidence from event-related potentials and eye-tracking. Journal of Cognitive Neuroscience. 19, 843-854.

 

Gluten-freedom?

   Image: jefferyyw  Image from flicker by jefferyw

     Diet trends come and go. (Anyone remember the Atkins’s diet?) The newest fad that has seemed to appear is the gluten-free lifestyle, claiming to help you lose weight, increase energy, and decrease that bloated feeling. However, there have been increasing cases of gluten sensitivity that have emerged  due to various external factors. So is gluten sensitivity really becoming more common? Or is being gluten-free another diet fad?

Gluten is a protein found in wheat, barley, and rye. It is what gives our breads the texture we love. It gives pizza dough its stretchy consistency. It gives soups and stews viscosity.

However, gluten proves problematic for people with celiac disease, which affects around 1 in 133 Canadians.  Celiac disease is a disorder where a person is not able to digest gluten protein as the body sees it as an invader and attacks it with antibodies and at the same time injuring the small intestine. This damage causes nutrients not be absorbed properly through the villi in the intestine, consequently causing the individual to be malnourished and feel sickly. Other symptoms include fatigue, skin problems, and even depression.

Brown, from the John A. Burns School of Medicine at the University of Hawaii, believes that gluten sensitivity is emerging as a separate condition from celiac disease. The increase in cases of gluten intolerance may involve plant genetic modifications, gluten as a food additive, environmental toxins, and human genetics.

Gluten intolerance is now starting to be seen as a spectrum where at one end is celiac disease, and at the other end is a person who seems to be digesting gluten fine. However, gluten is generally a protein that is not easily digested by humans. Everyone has a limit to the amount of gluten that the body will digest with ease.

People with even just a low level of gluten sensitivity may live a gluten-free lifestyle simply because it makes them feel better. However, switching to gluten-free is not an easy step and requires planning. Although gluten-free foods are now easier to find at your local grocery store, they are not necessarily healthy. Many of these pre-packaged foods are loaded with extra sugar or fat in order to make the food taste better. So skip the gluten-free brownies.  A gluten-free diet is only a healthy one if you consume adequate fruits and vegetables, lean high quality meats, and substitute your usual carbohydrates with rice and grain-like crops like quinoa.

Gluten sensitivity has been found to be more common than it has been previously, especially affecting those with an eastern European background. Along with this increase has been a rising trend in individuals who choose to eat foods without gluten even though they do not need to, and claim to feel much better living that lifestyle. Ultimately,eating gluten-free is not a dangerous fad diet, but  is rather a very healthy lifestyle if done properly.