Studies in Perception and Action V: Tenth International Conference on Perception and Action: Aug. 8-13, 1999, Edinburgh, Scotland

By Madeleine A. Grealy; James A. Thomson et al. | Go to book overview
Studies in Perception and Action V M. A. Grealy & J. A. Thomson (Eds.) © 1999 Lawrence Erlbaum Associates, Inc.
Are Haptic Perceptions Independent?
Megan M. CooperCESPA, University of Connecticut, Storrs, USAPrevious investigations of dynamic touch have suggested that, in wielding an occluded rod, the nonvisible perceptions of whole rod length and center of percussion are different functions of the inertial properties of that object ( Carello, Thuot, Anderson, & Turvey, in press). Rod length has been shown to depend on the inertia tensor, Iij, and in particular on the maximum eigenvalue (I1). Center of percussion (CP) depends on the ratio of I1 to static moment. The implication that the perceptions are independent covariants of these inertial properties was tested using the 3- step procedure of Ashby and Townsend ( 1986). The logic of the analysis rests on the definition of certain key terms:
Perceptual independence exists if the perception of one dimension of a given stimulus, A (e.g. I1), in no way interacts with or is contingent upon the perception of another, B (e.g. CP).
Decisional separability exists if the decision to report a particular perception of dimension A does not depend on the level of B.
Perceptual separability exists provided the perceptual effects of dimension A do not depend on the level of B.

A logical test for perceptual independence cannot proceed without first satisfying that conditions of separability hold. Step 1 is a global test of separability, the test of partial contingent uncertainties (see Garner & Morton, 1969). If these values do not differ significantly from zero, then separability holds. Step 2 is a local test of separability, the test of marginal response invariance (see Ashby & Townsend, 1986). If the perceived values of A do not vary with the level of B, then the local test of separability passes. Step 3 is the test for perceptual independence, termed sampling independence (see Ashby & Townsend, 1986). If the joint probability of making a particular response (P(ai, bj)) equals the product

-81-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Project items

Items saved from this book

This book has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this book

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited page

Bookmark this page
Studies in Perception and Action V: Tenth International Conference on Perception and Action: Aug. 8-13, 1999, Edinburgh, Scotland
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Full screen
/ 350

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.