摘要
以44名小学六年级儿童与40名大学生为被试,通过0-1和1/100-1/10两种数字线的NP(数字位置)和PN(位置数字)估计任务系统考察儿童与成人的分数估计的表征方式。结果显示:(1)儿童和成人在0-1数字线的NP和PN任务上都呈线性表征,但在1/100-1/10数字线下,两组被试在NP任务上却呈对数表征,在PN任务上呈指数表征;(2)NP任务的错误百分比均高于PN任务,且儿童在两数字线下的准确性均明显低于成人。
44 sixth-graders and 40 college students were tested by Number-Position task (NP) and Position-Number task (PN) on 0- 1 and 1/100 -1/10 number lines to explore children's and adults' representation patterns of fractions estimation. Results showed that : 1 ) Two groups followed a linear pattern in both NP and PN tasks on 0 - 1 number line, and followed a logarithmic pattern on NP task and an exponential pattern on PN task on 1/100 - 1/10 number line. ; 2) the percentage of error for NP task was higher than PN task for children and adults, and sixthgraders made more error than the adults did on the 0 - 1 and 1/100 - 1/10 number lines.
出处
《心理发展与教育》
CSSCI
北大核心
2014年第5期449-456,共8页
Psychological Development and Education
基金
山东省自然科学基金面上项目(ZR2010CM059)
国家自然科学基金面上项目(31371048)
山东省强化建设重点学科"发展与教育心理学"专项经费资助
关键词
数字线估计
线性表征
分数估计
NP任务
PN任务
number line estimation
linear representation
fractions estimation
NP task
PN task