WebThe speed-accuracy trade-off This is an excerpt from Fundamentals of Motor Behavior by Jeffrey Fairbrother. You have probably experienced speed-accuracy trade-offs many times as you have completed various tasks (Fitts, 1954). http://uxpa.org/jus/usability-evaluation-of-touch-less-mouse-based-on-infrared-proximity-sensing/
Did you know?
WebPaul Fitts found a predictable relationship between the size of a target, the distance we have to move to it, and the speed at which we can tap, point at, click, or whatever on it. Today we'll do experiments to try to determine this relationship. The typical Fitts' Law experiment involves WebDay 1, soak the seeds (this experiment uses Peas, Little Marvel) overnight in water. Day 2, Place a wet paper towel in a ziplock bag and place 5-10 seeds on the paper towel in the …
WebFitts’ law Fitts’ law experiment proposed to use a standard task to measure motoric skills. It states that the average time needed to select the target is linearly related to the index-of-difficulty (ID). This means you select the target with width (W) positioned at a distance (D) form the current position. Two types of data: WebNumerous independent variables appear in Fitts' law experiments, such as device (e.g., Card, English, & Burr, 1978; Epps, 1986; MacKenzie, Sellen, & Buxton, 1991), transfer function (Jellinek & Card, 1990; MacKenzie & Riddersma, 1994), or system lag (MacKenzie & …
Fitts's law (often cited as Fitts' law) is a predictive model of human movement primarily used in human–computer interaction and ergonomics. The law predicts that the time required to rapidly move to a target area is a function of the ratio between the distance to the target and the width of the target. Fitts's law … See more The original 1954 paper by Paul Morris Fitts proposed a metric to quantify the difficulty of a target selection task. The metric was based on an information analogy, where the distance to the center of the target (D) is … See more The formulation of Fitts's index of difficulty most frequently used in the human–computer interaction community is called the Shannon … See more Not long after the original model was proposed, a 2-factor variation was proposed under the intuition that target distance and width have separate effects on movement time. … See more Fitts's law deals only with targets defined in space. However, a target can be defined purely on the time axis, which is called a temporal target. A blinking target or a target moving … See more A movement during a single Fitts's law task can be split into two phases: • initial movement. A fast but imprecise movement towards the target • final movement. Slower … See more An important improvement to Fitts's law was proposed by Crossman in 1956 (see Welford, 1968, pp. 147–148) and used by Fitts in his 1964 paper with Peterson. With the adjustment, … See more Extensions to two or more dimensions In its original form, Fitts's law is meant to apply only to one-dimensional tasks. However, the … See more WebSimple Canvas Example
WebAbstract In this work, we examined a touchless mouse, which is a Human-Machine Interface (HMI) device for non-contact gesture inputs to a computer system. The touchless or T-less mouse is used by moving a finger without touching any device or surface. We evaluated it according to the guidelines and testing procedures for evaluating computer pointing
WebFitts' experiment and the Fitts’ Law equation highlight the points that are important in pointing tasks such as pointing speed, target distance, target size and accuracy. … chc2d weeblyWebNov 2, 2011 · By manipulating the location and the size of targets in Lissajous displays, we combined the bimanual coordination and Fitts' law experiment design features and proposed an experiment to examine... chc - 2e pa healthWebFitts’ Law – The ExperimentThe Experiment • Fitts describedFitts described “reciprocal tappingreciprocal tapping” – Subjects were asked to tap back and forth on two 6-inch -tall plates with widthtall plates with width W of 2 1 0 5 and 0 25of 2, 1, 0.5, and 0.25 inches custom size chair matsWebIn a reanalysis of data from Fitts' law experiments, models built using the Shannon formulation are (re)affirmed to be as good as, and generally better than, those built using the Fitts or Welford formulation. 展开 关键词： Fitts’ Law Index of Difficulty Shannon Formulation Effective Target Width Scientific Method DOI： 10.4236/ojapps.2013.36046 … custom size clear tablecloth protectorWebSummary: This paper makes seven recommendations to HCI researchers wishing to construct Fitts' law models for either movement time prediction, or for the comparison of conditions in an experiment. custom size closet shelvesWebABSTRACT The paper describes an experiment investigating older adults' ability to make rapid aimed movements with a computer mouse. Fitts' law was found to be applicable, but had R 2 lower than for younger subjects. On average, it took elder participants twice as much time to complete movement tasks, but their accuracy was two times higher. chc2p assignmentsWebIn 1954, psychologist Paul Fitts, examining the human motor system, showed that the time required to move to a target depends on the distance to it, yet relates inversely to its … chc2d textbook pdf