Task and Effector Constraints on the Kinematics of Pointing Movements

Michael Bohan; Daniel McConnell; Shelby Thompson; Alex Chaparro

Task and Effector Constraints on the Kinematics of Pointing Movements

Michael Bohan, Daniel McConnell, Shelby Thompson, Alex Chaparro

Wichita State University

Research output: Contribution to conference › Presentation

Abstract

 Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts’ type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from
 movement scale at the level of the cursor. Using linear regressions to predict movement time, we found that effector constraints best predict the primary transport phase of the movement, bringing the hand near the target. Visual task constraints underlie the secondary target acquisition phase of the movement. We present a reformulation of Fitts’ (1954) index of difficulty, capturing the relative contributions of effector and visual task
 constraints.

Original language	American English
State	Published - Sep 2005
Externally published	Yes
Event	49th Annual Meeting of the Human Factors and Ergonomics Society - Orlando, FL Duration: Sep 1 2005 → …

Conference

Conference	49th Annual Meeting of the Human Factors and Ergonomics Society
Period	9/1/05 → …

Keywords

pointing tasks
computer input device control
vision

Disciplines

Computer and Systems Architecture
Human Factors Psychology

Cite this

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title = "Task and Effector Constraints on the Kinematics of Pointing Movements",

abstract = " Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts{\textquoteright} type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at the level of the cursor. Using linear regressions to predict movement time, we found that effector constraints best predict the primary transport phase of the movement, bringing the hand near the target. Visual task constraints underlie the secondary target acquisition phase of the movement. We present a reformulation of Fitts{\textquoteright} (1954) index of difficulty, capturing the relative contributions of effector and visual task constraints.",

keywords = "pointing tasks, computer input device control, vision",

author = "Michael Bohan and Daniel McConnell and Shelby Thompson and Alex Chaparro",

note = "Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts' type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at the level of the cursor.; 49th Annual Meeting of the Human Factors and Ergonomics Society ; Conference date: 01-09-2005",

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AU - Bohan, Michael

AU - McConnell, Daniel

AU - Thompson, Shelby

AU - Chaparro, Alex

N1 - Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts' type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at the level of the cursor.

PY - 2005/9

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N2 - Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts’ type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at the level of the cursor. Using linear regressions to predict movement time, we found that effector constraints best predict the primary transport phase of the movement, bringing the hand near the target. Visual task constraints underlie the secondary target acquisition phase of the movement. We present a reformulation of Fitts’ (1954) index of difficulty, capturing the relative contributions of effector and visual task constraints.

AB - Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts’ type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at the level of the cursor. Using linear regressions to predict movement time, we found that effector constraints best predict the primary transport phase of the movement, bringing the hand near the target. Visual task constraints underlie the secondary target acquisition phase of the movement. We present a reformulation of Fitts’ (1954) index of difficulty, capturing the relative contributions of effector and visual task constraints.

KW - pointing tasks

KW - computer input device control

KW - vision

UR - https://journals.sagepub.com/doi/pdf/10.1177/154193120504901709

M3 - Presentation

T2 - 49th Annual Meeting of the Human Factors and Ergonomics Society

Y2 - 1 September 2005

ER -

Task and Effector Constraints on the Kinematics of Pointing Movements

Abstract

Conference

Keywords

Disciplines

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Cite this