Handedness

What I learned in this handedness experiment, was how many people are not left handed. People’s family’s in the class had 14% lefties. I didn’t think lefties were that rare. There was a higher percentage of 22% in my class. What surprised me the most was that there was on average 9% lefties at our school. We had only collected 525 people which isn’t even half, but it gives you a rough idea. There was an average of 10% lefties and 90% righties. I learned that different cultures have different results

population), and the minority, the ones that are dominant in their left hand (10% of the population). Though there is no way of knowing for sure why this is, we are able to make an educated guess. Scientists believe that humans started developing handedness during the Stone Age, when hunters would use their left hand to shield their heart (as, of course, the heart is on the left side) and their right to wield weapons. Thus, much of the population evolved to be right-hand dominant. Some might say “What

Handedness Handedness of an individual can be determined by knowing which hand(right or/and left hand ) is used high frequently for performing the tasks. Most of the people around the world are right handed. There are four type of handedness. They are • Right handedness- Major usage of right hand for most activities • Left handedness- Major usage of left hand • Cross-dominance- Usage of separate hands for separate tasks • Ambidexterity - Using both hands equally Origin: Different statistics study

Handedness and brain asymmetry are both very important aspects of humans and many other species. They are innate, complicated features that are distinct to everyone. Unfortunately, many people have made assumptions that exaggerate the importance and dominance of one side of the brain from the other. It is understood that the left-brain controls the right hand and specializes in language and logic. Alternatively, the right-brain controls the left hand and specializes in creativity, intuition, and

decided on researching left-handedness. I then had to decide on a topic within the area and influenced by my love of science I landed on my research question: ‘In what ways, physically and psychologically are right-handers different to left-handers and what causes this?’ Research Processes After deciding on a topic I brainstormed ideas for primary and secondary sources. An obvious choice for secondary sources was the internet. There were many articles explaining left-handedness, providing theories for

The Causes and Effects of Left Handedness Observed in Individuals For thousands of years, there has been evidence of humans’ fascination with handedness, particularly regarding left-handed individuals. In the past, southpaws have been represented as a sign of evil, mental illness, defiance, creative and music ability, and empathy. As a result of these clichés, left-handers, had been alienated in the past. However, in more recent developments, psychologists and neurologists alike have investigated

Left-Thumb dominance. Since this experiment was based on 6 subjects I did all the calculations for it. It turned out that 4 people came up to be 67% and 2 people calculated to be 33%. For a total of 100%. Table 1-3: Thumb Dominance Results | Handedness and Thumbon top | Combined

Discuss how handedness may be related to health related outcomes for individuals and discuss how genetic and environmental influences might mediate these effects. Introduction Handedness is a complex phenotype of humans in which individuals have a preference or advantage for use of a hand. Handedness is a not a discrete trait, but continuous. Right handedness is accepted as normal over left handedness. There are four types of handedness (left-handedness, right-handedness, mixed-handedness, where one

The link between handedness and hemispheric dominance is based on the simple logic that one’s preferred hand must mean that the hemisphere controlling this hand is also preferred. This means that right-side of the brain is dominant in left-handers while the left-side of the brain is dominant in right-handers, since the brain works contra-laterally (meaning that the left-side of the brain is responsible for the right-side of the body and reversed). In most people the verbal processing (assumed to

Anxiety is defined as a condition, or unpleasant emotional state that involves feelings of worry, tension and apprehension (Bekker et al, 2003). To attempt to discover the causes of anxiety, and what areas of the brain are involved, Jeffrey Grays Behavioural Inhibition System (1982) will be discussed. Following this, further exploration of these beliefs by Carver and White (1994) will be explored. In addition to these, it is also suggested that anxiety is correlated to hippocampus and amygdala formation