KINE 2P05 Lab 4 Outline

.doc

School

Brock University *

*We aren’t endorsed by this school

Course

2P05

Subject

Chemistry

Date

Apr 3, 2024

Type

doc

Pages

Uploaded by AgentMosquito3226 on coursehero.com

KINE 2P05: Lab 4 Report Questions: There are 6 questions to complete for this lab report. 1. a) Record your Lab Group results and Subject A’s results in the tables below. (2 marks) b) Select the best trial for each Index of difficulty (ID) and calculate average movement time (in msec) for a single movement of the reciprocal tapping task. Do this by dividing each number of taps by 10, which will give you the number of taps per sec during the 10-sec trial. Take the inverse of this number (1/x where x = average number of taps). Then multiply this number by 1000 to obtain the average movement time in msec. Report your values to one decimal point. Record your work for each ID for your Lab Group and Subject A data in the following tables. (8 marks) Lab Group Data: ID D/W # Taps Trial 1 # Taps Trial 2 # Taps “Best Trial” # Taps/sec (Taps/10) Average MT (msec) 1 2 / 2 34 39 39 3.9 256 2 (a) 2 / 1 35 23 35 3.5 285 2 (b) 4 / 2 38 43 43 4.3 232 3 (a) 4 / 1 35 31 35 3 . 5 285 3 (b) 8 / 2 33 34 34 3.4 294 4 (a) 8 / 1 29 26 29 2.9 344 4 (b) 16 / 2 29 29 29 2.9 344 5 16 / 1 20 21 21 2.1 476 Subject A Data: ID D/W # Taps Trial 1 # Taps Trial 2 # Taps “Best Trial” # Taps/sec (Taps/10) Average MT (msec) 1 2 / 2 51 50 51 5.1 196 2 (a) 2 / 1 47 43 47 4.7 212 2 (b) 4 / 2 48 47 48 4.8 208 3 (a) 4 / 1 34 31 34 3.4 294 3 (b) 8 / 2 34 33 34 3.4 294 4 (a) 8 / 1 30 26 30 3.0 333 4 (b) 16 / 2 31 24 31 3.1 322 5 16 / 1 23 22 23 2.3 434

2. Plot the data for Subject A on a line graph where ID (independent variable) is on the x-axis and average MT (dependent variable) is on the y-axis. (3 marks) 3. a) What were the 2 most important instructions Fitts provided to the subject about how the task should be completed? Be specific. (3 marks) Fitts’s law is the time it takes for a person to move a pointer to a target region. The longer it takes, the longer the distance and the smaller the goal. The reciprocal task requires a quick continuous movement between objects during a 10-second time period. When performing the reciprocal job, the two most important elements to consider are: 1. Go as fast as possible. 2. Be as accurate as possible and limit errors to less than 5% b) How did Fitts change the index of difficulty of a movement ( Hint: how did he change the task constraints )? (2 marks) While completing the reciprocal exercise, there were three papers with the size and length of the rectangles changed to make it more difficult to complete precisely. It was discovered that the greater the distance and the smaller the goal size, the longer it took to finish. This is because task variety makes it more difficult to predict motions. 4. Based on Subject A’s data, which tapping task had the worse motor performance? Explain your answer based on Fitts Law. (2 marks) Subject A performed lowest in trial 5. Fitts' law states that the length of time it takes a person to move the pen from one target to the next is impacted by the distance between the targets as well as their size. The rectangles were 1cm wide and 8cm apart, representing the greatest distance apart and smallest width allowed for this experiment. Subject A will be less precise with the pen if they try to compensate for the time it takes to get from one target to the other, by going quicker. 5. Based on Subject A’s data, were there differences in motor performance between tapping tasks that shared the same ID? Explain your answer based on Fitts Law. (2 marks) Subject A always performed well in the second trial between targets that were the same width and distance apart. Subject A practices their accuracy over time as they move through the trials. They will do better in the second set of trials because of muscle memory. Subject A may be more

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version