4.2 Article

Perceiving Affordances for Fitting Through Apertures

Publisher

AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0011393

Keywords

affordance; aperture; perception-action; psychophysics; reaching

Funding

  1. National Institute of Child Health
  2. Human Development (NICHHD) [HD33486]

Ask authors/readers for more resources

Affordances-possibilities for action-are constrained by the match between actors and their environments. For motor decisions to be adaptive, affordances must be detected accurately. Three experiments examined the correspondence between motor decisions and affordances as participants reached through apertures of varying size. A psychophysical procedure was used to estimate an affordance threshold for each participant (smallest aperture they could fit their hand through on 50% of trials), and motor decisions were assessed relative to affordance thresholds. Experiment I showed that participants scale motor decisions to hand size, and motor decisions and affordance thresholds are reliable over two blocked protocols. Experiment 2 examined the effects of habitual practice: Motor decisions were equally accurate when reaching with the more practiced dominant hand and less practiced nondominant hand. Experiment 3 showed that participants recalibrate motor decisions to take changing body dimensions into account: Motor decisions while wearing a hand-enlarging prosthesis were similar to motor decisions without the prosthesis when data were normalized to affordance thresholds. Across experiments, errors in decisions to reach through too-small apertures were likely due to low penalty for error.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.2
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Education & Educational Research

Learning analytics application to examine validity and generalizability of game-based assessment for spatial reasoning

Yoon Jeon Kim, Mariah A. Knowles, Jennifer Scianna, Grace Lin, Jose A. Ruiperez-Valiente

Summary: This paper examines the validity and generalizability of game-based assessment for middle school students' spatial reasoning skills, using learning analytics methods. The findings indicate that the digital game Shadowspect is a valid assessment tool and has comparable precision for both male and female students. Additionally, students' enjoyment of the game is positively related to their overall competency, regardless of their existing spatial reasoning skills.

BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY (2023)

Article Psychology, Developmental

Racing dragons and remembering aliens: Benefits of playing number and working memory games on kindergartners' numerical knowledge

Geetha B. Ramani, Emily N. Daubert, Grace C. Lin, Snigdha Kamarsu, Alaina Wodzinski, Susanne M. Jaeggi

DEVELOPMENTAL SCIENCE (2020)

Article Education & Educational Research

Academic vocabulary and reading comprehension: exploring the relationships across measures of vocabulary knowledge

Joshua Fahey Lawrence, Aste Mjelve Hagen, Jin Kyoung Hwang, Grace Lin, Arne Lervag

READING AND WRITING (2019)

Article Family Studies

Nourishing a Partnership to Improve Middle School Lunch Options A Community-Based Participatory Research Project

Stephanie M. Reich, Joseph S. Kay, Grace C. Lin

FAMILY & COMMUNITY HEALTH (2015)

No Data Available