所谓“异性效应”，就是指由于男女同在而引起的对活动起积极影响的微妙作用。我们常常会看到这种情景：在男女同学共同参加的班级活动中，每个同学都积极努力，表现出色，希望在异性同学面前留下良好的印象。如，去年我组织本班学生进行过两次郊游野炊活动，头一次男女分... The so-called “opposite effect” refers to the subtle effect of positive influence on the activities caused by the presence of men and women. We often see this scenario: In the class activities that are jointly attended by male and female students, each student is actively working hard and performing well and hopes to leave a good impression on the students of the opposite sex. For example, last year I organized my students in this class to have two outing picnic activities, the first time men and women...