THE 'score card system' used in certain children's centres to encourage positive behaviour has different implications for children of different ages. Yiu Kit-ling, who is in charge of the Tai Kok Tsui Children Centre of the Boys' and Girls' Clubs Association of Hong Kong, explained the thinking behind the score-card, which has been in use for over 10 years. 'It encourages the children to serve each other and to join in activities that raise their awareness of the world around them,' Ms Yiu said.' Children gain points by putting borrowed toys back where they belong, registering their membership cards, taking part in news quizzes and attending and doing well in tutorial classes. One point equals one dollar. The more points a child collects, the more expensive the gift he can get in exchange. Ms Yiu said the younger the child, the more enthusiastic he or she is about the system. 'Little children don't have much pocket money to go in for extra stationery and toys.' The system allows children to choose what they want for a gift, and when they want it, and the gift need not be something readily found in the home. To those children who have enough pocket money to buy their own stationery, the system seems not as attractive. They find less variety of choice at the centre than in a department store. To make sure the choices match the the children's needs, staff at the centre discuss 'current favourites' with the children. 'The hot item now is the Sailor Moon. The children are going in for items carrying this figure.' The centre offers stationery items like files, pencils, pens, pen-holders, note-books and erasers.