In: Operations Management
1. Fitts' Law states that the time spent to acquire a target is a function of its distance from the starting point and its size.
a. True
b. False
2. Steering law says pointing time depends on the distance to be traveled and the width of the path.
a. True
b. False
3. The shortest time a visual stimulus can be shown and still affect us is five seconds.
a. True
b. False
4. The cause-effect interval is 140 milliseconds.
a. True
b. False
1. Ans. - b. False.
The reason - Fitts' law expresses that the measure of time required for an individual to move a pointer (e.g., mouse cursor) to an objective/target region is a function of the separation/distance to the objective/target partitioned by the size of the objective/target. Consequently, the more extended the separation/distance and the littler the objective's/target's size, the more it takes.
2. Ans. - a. True.
The reason - According to steering law the formula for the required pointing time is -
T = a+b (D/W)
Where T = required time, D = distance of the path, and W = width of the path.
So T depends on the D and W.
3. Ans. - b. False.
The reason - The exact shortest time is 5 milliseconds. This is the premise of purported subconscious observation. On the off chance that you are demonstrated a picture for 5–10 milliseconds, you won't know about observing it, however, low-level pieces of your visual framework will enlist it.
4. Ans. - a. True.
The reason - This interim is the cutoff time for the impression of cause and effect. In the event that an intelligent framework takes longer than 0.14 seconds to react to your activity, you won't see your activity as having caused the reaction. For instance, if the resounding of characters you type slacks in excess of 140 milliseconds behind your composing, at that point you will lose the discernment that you are composing those characters. Your consideration will be redirected away from the importance of the content and toward the demonstration of composing, which eases back you down, hauls composing of programmed handling, and into cognizant preparing, and expands your odds of making a mistake.