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Through experiment, researchers in United States University of Texas Southwestern Medical Center have found that a material called hunger hormone make the mice find food to eat under the case of not hungry. Researchers built two houses for mice, one is striped walls which placed delicious high-calorie food inside the cabin, the other is gray walls which placed small low-calorie foods. After repeated training, mice have remembered where the house for what it was. Then, the researchers feed the mice so that they choose a hut to enter. The results showed that mice injected the “hunger hormone” are more likely to enter the striped walls cabin, even if there is no food in the cabin. But mice which were not injected the “hunger hormone” showed no preference. Jeffrey Zigman, vice Professor of this experiment, said:” Our research showed that this hormone may affect associated with the consumption-related behavior, which led to over-eating.” The words were quoted by Fun Science Site.

Zigman considered that the “hunger hormone” may produce the extra desire for food.” Mice’s behavior has nothing to eat food, just to get more pleasure.” he explained. Mario Peirello, another charger of this study, said:”We believe that the hunger hormone would make mice go looking for high-calorie foods, because they remember how delicious it is. Even if there is no food inside, it does not matter, mice still believe it can cause some kind of pleasure associated with the existence of things.” there are commons in brain cells connected, hormone type and brain “pleasure center” between human and mouse.

However, the “hunger hormone” is not the only reason for non-stop eating. Other factors may also cause people to over-eating. For example, the firs factor is gene. A gene called GAD2 was found by Imperial College London researchers in 2003, which easily lead to obesity. These genes will accelerate a neurotransmitter synthesis in the brain so as to stimulate people to eat. The next factor is the level of dopamine, a study published on Behavioral Neuroscience magazine in 2007 point that people with low levels of dopamine were more likely to seek pleasure and eat too much. Finally, the third reason is psychological factor. A common phenomenon is that a lot of frustrated people would eat large numbers of food.

An investigation on the phenomenon of auditory hallucination of children had been carried out by Groningen University Medical organizations, the researcher want to examine whether there is connection between auditory hallucination and children’s development and behavior. 3870 primary school students in the region of Groningen were investigated. The researchers asked them whether they have the experience of hearing only you and no one else hear the sound one or more times in the past year. 9% of students said they have been hearing voices, most of whom do not feel the impact of thinking caused by auditory hallucinations. Only 15% of them said, auditory hallucinations brought them serious trouble, 19% of people feel that auditory hallucinations interfere with thinking. The researchers also found that boys and girls were almost the same chance of auditory hallucination, but the girls were more likely to be disturbed and became anxiety. Agna Woertz, one researcher of the study, said:” under normal circumstances, these auditory hallucinations had limited impact on everyday life.”

Although the auditory hallucination means that it has high risk of suffering schizophrenia or mental disorders in the future, researchers said this does not apply to young people. Majority of children and adolescents with the phenomenon of auditory hallucination will not be suffering from mental illness in the future. “In most cases, auditory hallucination will go away.” She suggested that parents don’t worried about the child auditory hallucination, but should pay close attention to their children and let the children feel at ease. Previous studies have shown that auditory hallucinations may be related to a number of diseases in period of early infancy, but the University of Groningen researchers did not find that link. Durham University psychologist Simon Jones said that auditory hallucination is a relatively common phenomenon, “most people would occasionally have auditory hallucination, about 3% of the people or even often the case. Very few people can’t be a normal life due to auditory hallucination.” Jones believes that there are variety of factors which would lead to auditory hallucination such as excessive intake of caffeine, child abuse, lost friends or relatives and even schizophrenia.

Researchers from Stanford University and Swarthmore College found that people would feel embarrassed if there are too many choices, they would get nervous if they can’t pay more attention to the things they do, there would worry because they did not know whether the decision they made was right or wrong. The researchers believe that the key question of this outcome is that when people are faced with too many choices, they would be too concerned about what consequences their own choices will lead. People would be confused easily by many choices before make a decision, once the decision is made, they would not satisfy with their choice which they hold a suspected attitude. In addition, psychological selfishness and indifference will be rose by making the choice, this is because people often use individual likes and dislikes as the standard to make a choice, less take into account the interests of society as a whole.

“In the condition of the political, social and historical environment in the USA, freedom, autonomy and the right to be chosen are considered as the most important rights.” the researchers wrote, “modern psychology put the emphasis on independent right to choose which is the key to maintain a healthy mental function”. However, the study report concludes that the concept of putting emphasis on freedom and choose with freedom is not apply to all. Report says: “according to research about half a century, it shows that free and independent choice play an important role on mental health. This conclusion may apply to the highly educated middle-class and 95% of the world’s people do not apply.”

The researchers reviewed a range of earlier studies involving the selection of cultural and found that freedom and independent choice are highly valued by Westerners people who have highly educated. As for non-Western people and the working class in the Western countries, it is not so significant. When referred the definition of choice, Westerners and non-Westerners also have different views, In addition, this opportunity of freedom of choice will not increase their sense of well-being, but it weakened. At last, Marcus said: “We can’t assume that everyone would like to do choices. More choices maybe not bring freedom and happiness.”