CHANGING AFFORDANCES IN STAIR CLIMBING - THE PERCEPTION OF MAXIMUM CLIMBABILITY IN YOUNG AND OLDER ADULTS

被引:148
|
作者
KONCZAK, J
MEEUWSEN, HJ
CRESS, ME
机构
[1] UNIV WISCONSIN, DEPT PHYS EDUC & DANCE, MADISON, WI 53706 USA
[2] TEXAS WOMANS UNIV, DEPT KINESIOL, DENTON, TX 76204 USA
[3] UNIV WASHINGTON, DEPT MED, SEATTLE, WA 98195 USA
关键词
D O I
10.1037/0096-1523.18.3.691
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
This experiment extended Warren's leg-length model by investigating the relevance of leg strength and joint flexibility on perceptual judgments of climbability. From a set of 8 stairs (riser heights: 38-91 cm), 24 older and 24 young adults were asked to identify the highest stair they could climb without using their hands or knees. Ss then attempted to climb the selected stair. Tall and short young observers perceived similar action boundaries despite leg-length differences. Tall and short older adults had divergent action boundaries when a single-scale leg-length model was applied. A regression model that used flexibility and leg-strength measurements provided a better fit of the older adult data, indicating that models applying functional (kinematic and kinetic) criteria might be useful in describing lawful relationships between organisms and the environment.
引用
收藏
页码:691 / 697
页数:7
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