# Apa3120 Unit 3 Lab Report Essay

Better Essays
1425 Words
Grammar
Plagiarism
Writing
Score
Apa3120 Unit 3 Lab Report Essay
Lab #3- APA3120 Information Processing Speed-Accuracy Trade-off

Introduction

Paul Fitts’ was the first to discover the relationship between the speed of movement and accuracy requirements. This has become one of the most fundamental principles of motor control. Fitts claims a relationship between task difficulty and movement time. He quantified task difficulty as “index of difficulty” which consists of the ratio of twice the amplitude over width of the target (2Amplitude/Width). This relationship states that when movement amplitude decreases or when target width increases movement time is shorter (Fitts, 1954). Fitts found that the relationship between amplitude and width was given by the equation: MT= a + b[log2(2A/W)]. The empirical constants a and b represent the y-intercept and the slope (Schmidt & Lee, 2011). The purpose of this laboratory was to investigate the linear relationship between the index of difficulty and movement time. Furthermore, the target width-amplitude relationship was observed. The goal was to determine the effect of task difficulty on movement time. Based on Fitts’ law, it was hypothesized that the relationship between movement time and index of difficulty would increase linearly.
Refer to lab protocol for exact measurements. For each trial, the participant had to move a stylus between two targets, moving as fast as possible while maintaining accuracy. Each trial consisted of a fifteen second period, the number of total taps was recorded. Results from five participants were taken. Results represented movement times for index’s of difficulties of 1-4. The index of difficulty was an independent variable, movement time the dependent variable. It was expected that movement time was to increase with an increase in index of

## You May Also Find These Documents Helpful

• Satisfactory Essays

A. Create a solubility curve for NH4Cl by plotting g NH4Cl/100 mL H20 on the y-axis, and crystallization temperature on the x-axis. Make sure to label each axis. On the same graph as the solubility curve for NH4Cl, add the solubility curve for NaCl using the data provided in Data Table 3.…

• 737 Words
• 5 Pages
Satisfactory Essays
• Powerful Essays

summation of the twitches and by ~15pps we see no single twitches because the muscle has…

• 2639 Words
• 14 Pages
Powerful Essays
• Satisfactory Essays

| LabRepQuiz010 Question MC #7: Which of the following is the best written sentence that includes the information below taken from an article written by Dr. Costanza, but avoids plagiarism?…

• 929 Words
• 4 Pages
Satisfactory Essays
• Satisfactory Essays

INTRODUCTION: I AM DOING A LAB REPORT ABOUT EGGS, I’M USING SALTY WATER, VINEGAR, CORN SYRUP, AND I AM GOING TO TRY TO FIGURE OUT WHICH IS MORE PERMEABLE THAN ALL.…

• 601 Words
• 3 Pages
Satisfactory Essays
• Good Essays

In my BIO 102 lab I have learned about the Microscope and Lab Safety, Sensory Organs (Eyes and Ears), The Human Blood and Circulation, and Respiration.…

• 740 Words
• 3 Pages
Good Essays
• Satisfactory Essays

Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page.…

• 463 Words
• 2 Pages
Satisfactory Essays
• Good Essays

Describe the impact of specific conditions on the correct movement and positioning of an individual.…

• 1698 Words
• 5 Pages
Good Essays
• Good Essays

For the group of students who rested first, the average clothespin squeezes per minute (cps/min) were 142, 172, and 190.42. Combined the overall average for this group was 168.14 cps/min.…

• 366 Words
• 2 Pages
Good Essays
• Good Essays

1.2 Describe the impact of specific conditions on the correct movement and positioning of an individual…

• 548 Words
• 3 Pages
Good Essays
• Good Essays

2. Describe the impact of specific conditions on correct movement and positioning of an individual.…

• 563 Words
• 3 Pages
Good Essays
• Better Essays

The purpose of this experiment was to confirm the theory that we create picturelike representation of perceived visual stimuli, and we can also mentally rotate the representation to a known “upright” position. The reaction time increases linearly according to the angle of the rotation, regardless of their complexity (Cooper, 1975). In some circumstances, we snap the perceived visual stimuli and create a picturelike image in head. The process of mentally rotating the image inevitably takes time, and the length of the reaction time indicates how much effort we put in it. That means the reaction time represents the mental effort, and vice versa. It’s reasonable that as the angle of rotation increases, the more effort will be needed which results in linear increase in reaction time.…

• 801 Words
• 4 Pages
Better Essays
• Better Essays

Control conditions were put in place to reduce possible confounding variables. All of the participants received the same set of instructions. All participants completed both condition 1 and 2. The order of the conditions were alternated between participants to reduce any practice effect, and the same equipment was used for all participants.…

• 1563 Words
• 7 Pages
Better Essays
• Satisfactory Essays

1.2 Describe the impact of specific conditions on the correct movement and positioning an individual…

• 585 Words
• 2 Pages
Satisfactory Essays
• Powerful Essays

A typical digital stopwatch, precise to a 100th of a second, acted as the instrument in measuring performance. Performance by manner of efficiency was assessed using time of completion. Commencement and cessation of the instrument was manually regulated by the…

• 2083 Words
• 9 Pages
Powerful Essays
• Satisfactory Essays

Aim – To determine if different forms of movement for the same distance will affect the average speed.…

• 354 Words
• 2 Pages
Satisfactory Essays