Ericsson grew up in Sweden, and studied nuclear engineering until he realized he would have more opportunity to conduct his own research if he switched to psychology.

　　①Anders Ericsson, a 58-year-old psychology professor at Florida State University, says he believes strongly in “none of the above.”

　　②Ericsson grew up in Sweden, and studied nuclear engineering until he realized he would have more opportunity to conduct his own research if he switched to psychology.

　　③His first experiment, nearly 30 years ago, involved memory: training a person to hear and then repeat a random series of numbers.

　　④“With the first subject, after about 20 hours of training, his digit span had risen from 7 to 20,” Ericsson recalls.

　　⑤“He kept improving, and after about 200 hours of training he had risen to over 80 numbers.”

　　参考译文

　　①(观点：总)58岁的安德斯•埃里克森是佛罗里达州立大学的心理学教授，他坚信以上推测均不成立。

　　②(具体：分1)埃里克森成长于瑞典，开始是学习核工程，后来他意识到如果转学心理学，会获得更多进行专业研究的机会。

　　③(并列：分2)大约 30 年前他进行了第一次试验，与记忆力相关：训练一个人听一系列任意选择的数字然后让他进行重复。

　　④(并列：分3)埃里克森回忆说，“第一个被测试对象在经过了约 20 个小时的训练以后，他所记住的数字从 7 个增至 20 个。

　　⑤(并列：分4)他不断地进步，经过约 200 个小时的训练以后，他能记住 80 多个数字。”