Suppose you become a leader in an organization. It's very likely that you'll want to have volunteers to help with the organization's activities. To do so, it should help to understand why people undertake volunteer work and what keeps their interest in the work.

    S Let's begin with the question of why people volunteer. Researchers have identified several factors that motivate people to get involved. For example, people volunteer to express personal values related to unselfishness, to expand their range of experiences, and to strengthen social relationships. If volunteer positions do not meet these needs, people may not wish to participate. To select volunteers, you may need to understand the motivations of the people you wish to attract.

    S People also volunteer because they are required to do so. To increase levels of community service, some schools have launched compulsory volunteer programs. Unfortunately, these programs can shift people's wish of participation from an internal factor (e.g. “I volunteer because it's important to me”) to an external factor (e.g. “I volunteer because I'm required to do so”). When that happens, people become less likely to volunteer in the future. People must be sensitive to this possibility when they make volunteer activities a must.

    S Once people begin to volunteer, what leads them to remain in their positions over time? To answer this question, researchers have conducted follow-up studies in which they track volunteers over time. For instance, one study followed 238 volunteers in Florida over a year. One of the most important factors that influenced their satisfaction as volunteers was the amount of suffering they experienced in their volunteer positions. Although this result may not surprise you, it leads to important practical advice. The researchers note that attention should be given to “training methods that would prepare volunteers for troublesome situations or provide them with strategies for coping with the problem they do experience”.

    S Another study of 302 volunteers at hospitals in Chicago focused on individual differences in the degree to which people view “volunteer” as an important social role. It was assumed that those people for whom the role of volunteer was most part of their personal identity would also be most likely to continue volunteer work. Participants indicated the degree to which the social role mattered by responding to statements such as “Volunteering in Hospital is an important part of who I am.” Consistent with the researchers' expectations, they found a positive correlation(正相关) between the strength of role identity and the length of time people continued to volunteer. These results, once again, lead to concrete advice: “Once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity....Items like T-shirts that allow volunteers to be recognized publicly for their contributions can help strengthen role identity”.

    Sunrise Hike

Saturday, October 21, 6:45 am—7:45 am

    Enjoy sunrise from the hilltop as you learn about wildlife, plants, history and forest. Ages 8 and up; under 18 with an adult. To register (报名)by phone, call 630-933-7248.

    Meet in the parking lot on the west side of Greene Road south of 79^th Street. Dress for the weather, wear comfortable shoes and bring water.

    Trick or Treat

Saturday, October 28, 9:00 am—11:30 am

    You and your family are invited to join the YMCA for a Halloween hike up Badger Mountain! Make sure to wear your Halloween costumes (戏装)!

    Free shirts for the first 200 kids registered. Remember to take away your shirt by 11:30 am or it will be given away.

    Cost: Trick or Treat is a FREE event.

    Discovery Hike

Thursday, October 26, 1:00 pm—4:00 pm; Ages 3-8

    Fall is pumpkin time. Listen to a pumpkin story and learn how pumpkins grow. Then we will head out on the path in search of a little pumpkin just for you and maybe, we will find the great pumpkin along the way. $7 per child.

    Harvest Day Camp

Monday, October 31, 8:00 am—5:00 pm

    Harvest Camp is an opportunity for children aged 5-13 to find the wonder of autumn at Keystone Science School and enjoy all the fun the Halloween season offers. We'll explore the ways our natural environment has changed from summer to fall. As always, our programming is focused on building skills, knowledge and confidence. Cost: $0.00.

Love for language

    Very few of us become fluent in another language by studying it in high school. I went to university and then moved across the country, pursued a demanding career, married and raised children.

    I made an effort to maintain the little bit of French that I learned in school, but eventually realized that this was pointless. I was well aware that new languages are best learned when young, and that our abilities in that regard decline with age. However, just before my 50th birthday, I signed up for French classes. After I was tested to see which group I belonged in, I was placed at almost the introductory level. When I looked around at my first Saturday morning class, I was struck by how many of the students were learning French as a third, fourth, or even fifth language.

    Contrary to my assumption that learning a new language was impossibly difficult, there were people who learned new languages as a matter of course. I found that it really was true that certain linguistic (语言的) abilities fade with age.

    While I'd always thought of myself as a quick learner, that was no longer the case. I absorbed new vocabulary very slowly. What I learned one week seemed to slip away as soon as I learned the next skill. I looked up the same words and language structures over and over again.

    Now, a couple of years in, I can listen to the news in French and catch 90 percent of it on the first try, read a novel if the language is not too difficult, and hold up my end of a conversation if it doesn't go too fast.

    Who knows what I might still accomplish?

    I've learned so much beyond grammar and vocabulary. I've met people from around the world and all walks of life who have the courage to make fools of themselves in order to learn something new.

    I've been taught by patient and inspirational teachers from many corners of the world, including France, Eastern Europe, the Caribbean and Africa.

    Listening to the news as it is presented to the people of France, I have a renewed understanding of how something can look completely different from another perspective. I've learned that a language is not just a set of words, but a way of thinking. But most of all, I've learned that it really is never too late to learn something new.

    In Western countries people have been using the installment plan since the first half of the twentieth century. Today, a large number of families in Great Britain buy furniture, household goods and cars by installments In the U. S. A, the figure is much higher than in Great Britain, and people there spend over 10 percent of their income on the installment plan.

    The price of an article bought on installments is always higher than the price that would be paid by cash. There is a charge for interest. The buyer pays one quarter or one third of the price as a down payment when the goods are delivered to him. He then makes regular payments, weekly or monthly, until the full price is paid up. The legal ownership of the goods remains with the seller until the final payment has been made.

    Installment buying has advantages and disadvantages. It can help couples with small incomes to furnish their homes and star housekeeping. It increases the demand for goods, and in this way helps business and employment. There is, however, the danger that when business is bad, installment buying may end suddenly, making business much worse. This may result in a great increase in unemployment. If the people on the installment plan lose their jobs, they will probably not be able to make their payments. If great numbers of people are not able to pay their installment debts, there is a possibility that businessmen cannot collect their debts and will therefore lose money. If businessmen lose money or fail to make a satisfactory profit, it becomes more likely to have a depression. This is why, in some countries,the government controls the installment plan by fixing the amount of the down payment and installments to discourage people from buying more than they can pay for on the installment plan.

    Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 a.m. When I arrived to collect, I found the building was dark except for a single light in a ground floor window.

    I walked to the door and knocked, "Just a minute," answered a weak, elderly voice. After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a small suitcase.

    I took the suitcase to the car, and then returned to help the woman. She took my arm and we walked slowly toward the car.

    She kept thanking me for my kindness. "It's nothing," I told her. "I just try to treat my passengers the way I would want my mother treated."

    "Oh, you're such a good man." She said. When we got into the taxi, she gave me an address, and then asked, "Could you drive through downtown?"

    "It's not the shortest way," I answered quickly.

    "Oh, I'm in no hurry," she said. "I'm on my way to a hospice(临终医院). I don't have any family left. The doctor says I don't have very long."

    I quietly reached over and shut off the meter(计价器).

    For the next two hours, we drove through the city. She showed me the building where she had once worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where she had gone dancing as a girl.

    Sometimes she'd ask me to slow down in front of a particular building and would sit staring into the darkness, saying nothing.

    At dawn, she suddenly said," I'm tired. Let's go now."

    We drove in silence to the address she had given me.

    "How much do I owe you?" she asked.

    "Nothing." I said.

    "You have to make a living," she answered. "Oh, there are other passengers," I answered.

    Almost without thinking, I bent and gave her a hug. She held onto e tightly. Our hug ended with her remark, "You gave an old woman a little moment of joy."

    Fish have different personalities which change as they experience life's highs and lows, according to British biologists.

    Researchers identified different "personalities" in their fish by observing the boldness(大胆) or shyness of individuals, according to The Nature. Like people, some fish are very confident in the face of novelty or conflict, while others are silent and fearful.

    The scientists selected particularly bold and shy rainbow trout(虹鳟鱼), and tested whether they changed their outlook depending on what life threw at them. They arranged some fish to fight and others to watch to see how both the participants and observers responded to victories and defeats. Winning or losing a fight, or even watching fellow fish overcome the difficulties influenced the future behavior of the creatures studied in the lab.

    The researchers made fish compete with much larger or smaller opponents(对手), to ensure that they would win or lose their fights. These bold fish that won their fights tended to be even bolder when later presented with a novel food item; losing their fight caused them to be much more cautious.

    Fish also learn by watching others. Bold fish watching a shy fish exploring a mystery object were much more nervous when later given a novel item for themselves.

    Predictably, shy fish that won a fight also gained more confidence, but surprisingly, shy fish that lost their fights also grew bolder when exploring strange new food, Sneddon said, adding that this could be due to what she calls a "desperado effect"(亡命徒效应).

    The new research suggests that animals can gradually adapt(使适应) their personalities. The results agree with the effects that life experience can have on humans.